RL MISELENEOUS SCI 2 Flashcards
(213 cards)
1
Q
●Acceleration due to gravity is a vector quantity and isalways directed towards the ____ of the Earth orany heavenly body; it does not depend on the massm of the object.
A
centre
2
Q
●When substances react, they do so by followingcertain laws; these laws are called the laws ofchemical combination and formed the basis of____ atomic theory of matter.
A
Dalton’s
3
Q
●In 1916, the American chemist ____ proposed thatchemical bonds are formed between atomsbecause electrons from the atoms interact witheach other.
A
Gilbert Newton Lewis
4
Q
●Chronic ____, a type of chronic obstructivepulmonary disease, is characterized by thepresence of a productive cough that lasts for threemonths or more per year for at least two years.
A
bronchitis
5
Q
●____ is the formation of excess fibrous connectivetissue in an organ or tissue in a reparative orreactive process; this is as opposed to formation offibrous tissue as a normal constituent of an organor tissue.
A
Fibrosis
6
Q
●Pulmonary ____ is fluid accumulation in the lungswhich is due to either failure of the heart toremove fluid from the lung circulation or a directinjury to the lung parenchyma.
A
edema
7
Q
●The electron is a subatomic particle carrying anegative electric charge, it has no knowncomponents or substructure, therefore, theelectron is generally thought to be an ____particle.
A
elementary
8
Q
●By 1914, experiments by physicists ErnestRutherford, Henry Moseley, James Franck andGustav Hertz had largely established the structureof an atom as a dense nucleus of positive chargesurrounded by ____ electrons.
A
lower-mass
9
Q
●In physics and thermodynamics, heat is energytransferred from one place in a body or thermodynamic system to another place, orbeyond the boundary of one system to another onedue to thermal contact even when the systems areat different ____.
A
temperatures
10
Q
●____ are water-soluble vacuolar pigments that mayappear red, purple, or blue according to pH.
A
Anthocyanins
11
Q
●In common usage, an antibiotic is a substance orcompound that kills, or inhibits the growth of____.
A
bacteria
12
Q
●____, black quarter, quarter evil, quarter ill is aninfectious bacterial disease of sheep and cattle,caused by Clostridium chauvoei bacteria.
A
Blackleg
13
Q
●A ____ is a secreted or excreted chemical factor thattriggers a social response in members of the samespecies.
A
pheromone
14
Q
●The Gattermann reaction, named for the Germanchemist Ludwig Gattermann, in organicchemistry refers to a reaction of hydrocyanic acidwith an ____ compound.
A
aromatic
15
Q
●Flint glass is optical glass that has relatively highrefractive index and low ___.
A
Abbe number
16
Q
●Cell wall is found in plants, bacteria, fungi, algae, andsome archaea. Animals and ____ do not have cellwalls.
A
protozoa
17
Q
●The cells develop in the bone marrow and circulatefor about 100-120 days in the body before theircomponents are recycled by ____.
A
macrophages
18
Q
●The reactivity series is sometimes quoted in the strictreverse order of standard electrode potentials,when it is also known as the ____.
A
electrochemical series
19
Q
●Rocks brought back from the moon during the Apollo17 mission are composed of 12.1% ____.
A
TiO2
20
Q
●Wrought iron is an iron alloy with a very low carboncontent, in comparison to steel, and has fibrousinclusions, known as ____.
A
slag
21
Q
●Sodium carbonate (also known as washing soda, sodacrystals or soda ash) is a sodium salt of carbonicacid. It is domestically well known for its everydayuse as a ____.
A
water softener
22
Q
●A halogen element is a reddish-brown volatile liquidat standard room temperature that is intermediatein reactivity between chlorine and iodine. What isit?
A
bromine
23
Q
“●What is known as ““red brass”” in USA?”
A
Gun metal
24
Q
●Ultraviolet (UV) light is electromagnetic radiationwith a wavelength shorter than that of visiblelight, but longer than x-rays, in the range ____.
A
10 nm to 400 nm
25
●The visible violet light has a wavelength of about 400nm. The visible indigo light has a wavelength ofabout ____.
445 nm
26
●Alpha decay reduces the atomic weight, or massnumber, of a nucleus, while beta and ____ decayleave the mass number unchanged. Thus, the neteffect of alpha radioactivity is to produce nucleilighter than those of the original radioactivesubstance.
gamma
27
●In infrared photography, the film or image sensorused is sensitive to infrared light. The part of thespectrum used is referred to as near-infrared todistinguish it from far-infrared, which is thedomain of ____.
thermal imaging
28
●The blue color of the sky is due to which physicalphenomenon?
Rayleigh scattering
29
●If a lorry is travelling round a circular bend withuniform speed on a horizontal road, the resultantforce acting on it must be directed to the centre.i.e. it must be the ____.
centripetal force
30
●Blood anti-coagulation is achieved mostly by heparinsulfate proteoglycans derived from ___ cells.
endothelial
31
"●Phycocyanin is from the Greek phyco meaning""algae"" and cyanin is from the English word""cyan"", which is derived from the Greek ""kyanos""and means."
blue-green
32
●The fats are hydrolyzed by the base, yielding alkalisalts of fatty acids (crude soap) and ____.
glycerol
33
●For an aqueous solution to have a higher pH, a basemust be dissolved in it, which binds away many ofthese rare ____.
hydrogen ions
34
●As an ____, potassium permanganate can act as adisinfectant.
oxidant
35
●____ is the most cost-effective alloying material foriron, but various other alloying elements are usedsuch as manganese, chromium, vanadium, andtungsten.
Carbon
36
●The ____ is commonly used in acoustics to quantifysound levels relative to some 0 dB reference.
decibel
37
●A reaction is feasible only if the total change in the___ free energy is negative, if it is equal to zero thechemical reaction is said to be at equilibrium.
Gibbs
38
"●Classical mechanics is a model of the physics of forcesacting upon bodies. It is often referred to as""_____ mechanics""."
Newtonian
39
●The periodic table of the chemical elements is atabular method of displaying the chemicalelements. Although precursors to this table exist,its invention is generally credited to whichRussian chemist in 1869?
Dmitri Mendeleev
40
●What is a vertical column in the periodic table of theelements which is considered the most importantmethod of classifying the elements?
Group
41
●The evolutionary history of the species whichdescribes the characteristics of the various speciesfrom which it descended together with itsgenealogical relationship to every other species iscalled its ______.
phylogeny
42
●What studies the effects of changes in temperature,pressure, and volume on physical systems at themacroscopic scale, and the transfer of energy asheat?
Thermodynamics
43
●A hormone is a chemical messenger that carries asignal from one cell (or group of cells) to anothervia the blood. It is derived from a Greek word'opur' which means ______.
Impetus
44
●An infectious disease is a disease resulting from thepresence of pathogenic microbial agents, includingpathogenic viruses, bacteria, fungi, protozoa,multi-cellular parasites, and aberrant proteinsknown as ___.
Prions
45
●Anton van Leeuwenhoek advanced the science ofmicroscopy by being the first to observemicroorganisms, allowing for easy visualization of___.
bacteria
46
●Protists are mostly single-celled organisms that havea nucleus. They usually live in water. Examples ofprotists include some algae, paramecium, and ___.
amoeba
47
●The gravitational constant is an empirical physicalconstant involved in the calculation of thegravitational attraction between ___. It appearsEinstein's theory of general relativity.
objectswith mass
48
●The most abundant cells in blood are red blood cellswhich contain hemoglobin, an iron-containing_____, which facilitates transportation of oxygenby reversibly binding to this respiratory gas andgreatly increasing its solubility in blood.
Protein
49
●The salivary glands in mammals are exocrine glands,glands with ducts that produce saliva. They alsosecrete ___, an enzyme that breaks down starchinto glucose.
amylase
50
●Human erythrocytes are produced through a processnamed erythropoiesis, developing from committedstem cells to mature erythrocytes in about ____.
7 days
51
●Positively charged cations (e.g. sodium cation Na+)and negatively charged anions (e.g. chloride Cl?)can form a crystalline lattice of neutral _____.
Salts
52
●The cholesterol contained in _____ occasionallyaccrete into lumps in the gallbladder, forminggallstones.
Bile
53
●The most convenient presentation of the chemicalelements is in the periodic table of the chemicalelements, which groups elements by _____.
Atomic Number
54
●The only known vertebrates without erythrocytes arethe _____ which live in very oxygen rich coldwater and transport oxygen freely dissolved intheir blood.
Crocodile icefishes
55
●___ Postulate is a hypothesis, derived from transitionstate theory, concerning the transition state oforganic chemical reactions.
Hammond's
56
●___, permittivity of free space or electric constantrelates the units for electric charge to mechanicalquantities such as length and force in theInternational System of Units.
Vacuumpermittivity
57
●In physics, the space surrounding an electric chargeor in the presence of a time varying magnetic field has a property called anelectric field. The concept of an electric field wasintroduced by ___.
Michael Faraday
58
●Monera are single-celled organisms that don't have anucleus. ___ make up the entire kingdom.
Bacteria
59
●The discovery by ____ in 1931 that radio signals wereemitted by celestial bodies initiated the science ofradio astronomy.
Karl Jansky
60
●The human musculoskeletal system consists of thehuman skeleton, made by bones attached to otherbones with joints, and skeletal muscle attached tothe skeleton by ___.
tendons
61
●The most convenient presentation of the chemicalelements is in the periodic table of the chemicalelements, which groups elements by ____.
atomic number
62
●There are approximately ___ skeletal muscles withinthe typical human, and almost every muscleconstitutes one part of a pair of identical bilateralmuscles.
640
63
●___ are self-replicating organelles that occur invarious numbers, shapes, and sizes in thecytoplasm of all eukaryotic cells.
Mitochondria
64
●____ are heterogeneous mixtures in which the particlesize is too small to be seen with the naked eye, butis big enough to scatter light.
Colloids
65
●_____, a French chemist, was the first to establish anexperimentally useful definition of an element. Hedefined an element as a basic form of matter thatcannot be broken down into simpler substances bychemical reactions.
Antoine Laurent Lavoisier
66
●A chemical bond is a concept for understanding howatoms stick together in molecules. It may bevisualized as the _____ balance between thepositive charges in the nuclei and the negativecharges oscillating about them.
multipole
67
●Existence of a chemical element in two or more formsdiffering in physical properties but giving rise toidentical chemical compounds is known as ____.
allotropy
68
●Mitochondria are known as the powerhouses of thecell. The energy required for various chemicalactivities needed for life is released bymitochondria in the form of ATP (____)molecules.
Adenosine triphopshate
69
"●The generally accepted definition of health is ""a stateof complete physical, mental, and social well-beingand not merely the absence of disease orinfirmity"", used by the World HealthOrganization (WHO) since ____."
1948
70
●The property possessed by certain crystallinesubstances of losing their water of crystallizationwhen exposed to the air and becoming amorphousis called ____.
efflorescence
71
●The respiratory system consists of the nose, ____,trachea, and lungs. It brings oxygen from the airand excretes carbon dioxide and water back intothe air.
nasopharynx
72
●The spaces in between the constituent particles and____ of the particles are minimum in the case ofsolids, intermediate in liquids and maximum ingases.
kinetic energy
73
●The unique device developed by TimiryazevAgricultural Academy in Moscow, which can givereliable forewarning of natural calamities likefloods and droughts, is _____.
Bioceo compass
74
●A capacitor (originally known as ____) is a passivetwo-terminal electrical component used to storeenergy in an electric field.
Condenser
75
●____, otherwise known as electrical potentialdifference or electric tension is the electricpotential difference between two points
or thedifference in electric potential energy of a unit testcharge transported between two points. Voltage
76
●A ____ is an elementary particle, the quantum oflight and all other forms of electromagneticradiation, and the force carrier for theelectromagnetic force.
Photon
77
●Blood transfusion is the process of receiving bloodproducts into one's circulation intravenously.They are typically only recommended when aperson's hemoglobin levels fall below ____.
8g/dL
78
●Hard water contains calcium and ____ ions thatinterfere with action of soap and contribute to thebuildup of a scale or film of alkaline mineraldeposits in household and industrial equipmentand pipes.
Magnesium
79
A vaccine typically contains an agent that resembles adisease-causing microorganism, and is often madefrom weakened or killed forms of the microbe, itstoxins or one of its surface ____.
Proteins
80
●Five different and diverse types of White blood cellsor leukocytes exist, but they are all produced andderived from a multi-potent cell in the bonemarrow known as a hematopoietic ____.
StemCell
81
●Hydrochloric acid is a clear, colorless solution ofhydrogen chloride (HCl) in water, a highlycorrosive, strong mineral acid with manyindustrial uses, which is found naturally in _____.
Gastric acid
82
●Via which process is sodium chloride used to producesodium carbonate which is used to produce glass,sodium bicarbonate, and dyes as well as a myriadof other chemicals?
Solvay Process
83
●The most common function of a ____ is to allow anelectric current to pass in one direction, whileblocking current in the opposite direction (thereverse direction).
Diode
84
●The refractive index of many materials (such as glass)varies with the wavelength or color of the lightused, a phenomenon known as _____.
Dispersion
85
●The ____ principle is the quantum mechanicalprinciple that no two identical fermions (particleswith half-integer spin) may occupy the samequantum state simultaneously.
Pauli exclusionprinciple
86
●In printing, type metal (sometimes called hot metal)refers to the metal alloys used in traditional typefounding and hot metal typesetting. What is themain constituent of these alloys?
Lead
87
●Table salt is refined salt, which contains about 97 to99 percent sodium chloride. It usually containssubstances that make it free-flowing (anticakingagents) such as sodium alumino-silicate or _____.
Magnesium carbonate
88
●Vaccines containing antigens are introduced into thebody, stimulating the immune system response byinstructing B cells, with assistance from T cells, toproduce ____.
Antibodies
89
●As the intestine is a soft tissue structure, it is notusually seen on a plain X-ray. By using ____ tocoat the inner lining of this area the Radiologistcan see the bowel clearly on the X-ray screen, andcan watch the way it functions during this study.
Barium
90
●What is the term for photoreceptor cells in the retinaof the eye that are responsible for color vision,they function best in relatively bright light, asopposed to rod cells that work better in dimlight?
Cone cells
91
●For fixed (point-to-point) services, communicationssatellites provide which relay technologycomplementary to that of communication cables?
Microwave radio technology
92
●What is the term for a type of stellar remnant thatcan result from the gravitational collapse of amassive star during a supernova event?
Neutron Star
93
●On the surface of the Earth, the escape velocity isabout 11.2 kilometers per second (~6.96 mi/s),which is approximately how many times the speedof sound?
34 times
94
●At higher pressures and lower ____, deviations fromthe ideal gas behavior became noticeable, and therelationship between pressure and volume canonly be accurately described employing real gastheory.
Temperatures
95
●Which is that element that increases the absorption ofwater and calcium in the plants and helps in themetabolic activities in plants?
Boron
96
●The mean normal blood glucose level in humans isabout ____; however, this level fluctuatesthroughout the day.
4 mM
97
●What is the word for a group of identical cells thatshare a common ancestry, meaning they arederived from the same mother cell?
Clone
98
●Which is that organic or inorganic material ofnatural or synthetic origin (other than limingmaterials) that is added to a soil to supply one ormore plant nutrients essential to the growth ofplants?
Fertilizer
99
●Which is an uniquely suitable gas for soft drinksbecause it is inert, non-toxic, and relativelyinexpensive and easy to liquefy?
Carbon dioxide
100
insect larvae to form cocoons.
Silk
101
"●Escape velocity is the minimum speed which a spacecraft must have to escape the earth's""Gravitational Pull"". It is ___ km/sec. from theearth."
11.2
102
●Atoms of the same element with the same atomicnumber but with different atomic mass numberare known as Isotopes of that element. Theycontain different number of ___.
Neutrons
103
●Which component is used to produce Nitrolim, awidely used fertilizer in past?
Calcium Carbideand Nitrogen
104
●Which gas is produced whenever an alkali metal suchas Lithium or Sodium reacts with water?
Calcium Carbide and Nitrogen Hydrogen
105
●Which cell organelle is essential for Cellularrespiration, so vital to the existence of livingbeings?
Calcium Carbide and NitrogenMitochondrion
106
●Which daily appliance strictly works on the principleof dipole movement of the water molecules?
Microwave Oven
107
●Which waves are used in the gemstone industry tochange white topaz into blue topaz?
GammaRays
108
"●What is the term for that part of the ""DTH Satellitedish"" that converts the signals fromelectromagnetic or radio waves to electricalsignals?"
Low Noise Block Converter
109
●Which Vitamin is added to the milk in some countriesas it is lost during the process of Fat Removal(Skimming)?
Vitamin A
110
●A tourist, who plans to visit a hill station located atvery high altitude also wishes to take along hisTelevision At very high altitudes, only CathodeRay Tube TV and ___ can work.
LCD TV
111
●The elements which are found in Haemoglobin,Chlorophyll, Chalcopyrite & Vitamin B12 arerespectively Iron. Magnesium, Copper, and ____.
Cobalt
112
●In which form is Protein in the pulses for morecorrectly legume) found?
Albumin
113
●The name of Karl Landsteiner is associated with thediscovery of ____.
Human Blood Groups
114
●A molecule is a smallest part of matter whichpossesses all properties of original matter. Amolecule is electrically ____.
Neutral
115
●A ray passing from denser to rarer medium and notable to pass to rarer medium at an angle greaterthan critical angle shows the phenomenon of ____.
Total Internal Reflection
116
●Equal volumes of all gases contain equal number ofmolecules under similar conditions of temperatureand pressure. Which law says this?
Avogadro'sLaw
117
●Glycine max which is called Soya bean has highprotein content as we all know. 100 g of Soyabeanhas how much of Protein?
20-30 grams/100gram
118
●Hepatitis A which is the most common cause ofjaundice in young people is an infection of liver by____.
Virus
119
●Leishmaniasis is a disease caused by protozoanparasites that belong to the genus Leishmania andis transmitted by the bite of certain species of____.
Sand Fly
120
●Poliomyelitis known as Polio is caused by anenterovirus which causes paralysis of muscles.This virus has a particular affinity to the nervecells of ___.
Spinal Cord
121
●Sickle cell anemia. Albinism. Color blindness,phenylketonuria, Klinefelter syndrome, Turnersyndrome & Down syndrome are mainly groupedas ___.
Congenital diseases
122
●The chemical oxygen demand COD test is commonlyused to measure amount of ___ in water.
Organic Compound
123
●Two Flat mirrors are placed at an angle of 60° fromeach other. How many images will be formed of aCandle placed in between them?
5
124
●What will be the motion of a bullet which is firedhorizontally from a Supersonic jet Fighter whichis also moving Horizontal to surface of the Earth?
Projectile
125
●When light from some sources enters to the earth'satmosphere, it gets scattered. What causes thisscattering?
Dust, smoke and gas molecules
126
●When the body's immune system cells destroy theinsulin producing beta cells of the pancreas istermed as ____.
Type I diabetes
127
●When two mercury drops are brought into contactthey form a single bigger drop to get minimum ____.
Surface Area
128
●Which action is in the process of a liquid rising in thesyringe when the piston is pulled up?
Atmospheric Pressure
129
●Which term denotes the internal reaction force perunit area developed as a result of applied externalforce?
Stress
130
●___ is the most common and the oldest method forwaste disposal management, incineration is thesecond largest method for waste disposalmanagement in most of the countries around theworld.
Landfill
131
●___ tyres create more friction with the road,increasing fuel consumption by up to ten per centand are prone to skidding on either wet orslippery surfaces.
Under-inflated tyres
132
●____ is the enzyme in nitrogen-fixing bacteria thatcatalyzes the conversion of atmospheric nitrogeninto ammonia.
Nitrogenase
133
●Biogas or Gobar gas is produced by the ___ ofbiodegradable materials such as biomass, manure,sewage, municipal waste, green waste, plantmaterial, and crops.
Anaerobic digestion
134
●Poliomyelitis, often called polio or infantile paralysis,is an acute, viral, infectious disease spread fromperson to person, primarily via the ___ route.
Fecal-oral
135
●Uranium-238 is fissionable by fast neutrons, and isfertile, meaning it can be transmuted to fissile ___in a nuclear reactor.
Plutonium-239
136
●What is a partially vitreous by-product of the processof smelting ore, which separates the desired metalfraction from the unwanted fraction?
Slag
137
●What is a semiconductor device used to amplify andswitch electronic signals and electrical power?
Transistor
138
●Which is the phenomenon of the eye by which anafterimage is thought to persist for approximatelyone twenty-fifth of a second on the retina?
Persistence of vision
139
●Which medical device uses electrical impulses,delivered by electrodes contacting the heartmuscles, to initiate and regulate the beating of theheart?
Pacemaker
140
●Which white material produced by the calcination ofbones is primarily composed of calciumphosphate?
Bone ash
141
●The heat content of anthracite ranges from 22 to 28million ___ per short ton on a moist, mineral-matter-free basis.
Btu
142
●____ are used in endoscopic instruments that enabledoctors to view internal body parts withouthaving to perform surgery.
Optical fibres
143
●Sound that is perceptible by humans has frequenciesfrom about 20 Hz to 20,000 Hz. In air at standardtemperature and pressure, the correspondingwavelengths of sound waves range from 17 m to___.
17 mm
144
●Cane-sugar is carbohydrate and as this name implies,is composed of carbon, hydrogen and ___.
Oxygen
145
●A growth fertilizer has a high N content andrelatively low P and K content. Which is thehighest Nitrogen fertilizer one can buy?
Ammonium nitrate
146
●What is the chemical term for is a white solid that iscrystalline but often appears as a fine powder; hasa slightly salty and alkaline taste resembling thatof washing soda?
Sodium bicarbonate
147
●An atomic pile is a nuclear reactor that usescontrolled nuclear fission to generate energy. Themost common reactor consists of a large assemblyof ____.
Graphite
148
"●Penicillin is produced from the genus of fungi""penicillia"". All penicillin are ___ antibiotics andare used in the treatment of bacterial infectionscaused by susceptible, usually Gram-positive,organisms."
â-lactam
149
●Lymph is essentially recycled blood ___ after it hasbeen filtered from the blood cells and returned tothe lymphatic system.
Plasma
150
●Our bones and teeth are generally made up of Tri-calcium Phosphate which is calcium salt of ___.
Phosphoric acid
151
●What is the term for the scientific method of datingbased on the analysis of patterns of tree rings, alsoknown as growth rings?
Dendrochronology
152
●A certain sodium salt is most widely used in acidicfoods such as salad dressings (vinegar),carbonated drinks (carbonic acid), jams and fruitjuices (citric acid), pickles (vinegar), andcondiments. What is it?
Sodium Benzoate
153
A hydrocarbon compound containing carbon andhydrogen joined together in straight chains,branched trains or non-aromatic rings, is knownas:
Aliphatic compound
154
●Which is a natural preservative/conservative used toadd an acidic, or sour, taste to foods and softdrinks?
Citric Acid
155
●Which enzyme is located in the plasma membrane ofvirtually every human cell and is common to allcellular life?
Sodium-potassium pump
156
●The inheritance of acquired characteristics is ahypothesis that physiological changes acquiredover the life of an organism (such as theenlargement of a muscle through repeated use)may be transmitted to offspring. It is alsocommonly referred to as the ____.
Theory ofAdaptation
157
●Cements harden because of ___, chemical reactionsthat occur independently of the mixture's watercontent.
Hydration
158
●What is the term for chemical elements which haveatomic numbers between 90 and 109 andinclusively occur between Groups 3 and 4 inPeriod 7 of the periodic table?
Actinides
159
●Which of the following diseases can be transmittedfrom one person to another through tattooing?
Hepatitis B and HIV-AIDS
160
●Many transplanted seedlings do not grow becausemost of the root hairs are lost during ___.
Transplantation
161
●The vegetation of hot desert climate is xerophytictype which has special characteristics to withstandvery high rate of evaporation. They have:
longroots, thick barks, waxy leaves, thorns and littleleaves
162
●Friction is independent of surface area of contact.However, it depends upon the nature of materialof surfaces in contact, their roughness, smoothnessand ___.
Inclination
163
●Size of the sun at dusk, Colour of the sun at dawnand Twinkle of stars in the sky are very goodexamples of:
Optical Illusion
164
●A rainbow is always formed in a direction opposite tothat of the Sun. The water droplets act like small____.
Prisms
165
●In which state of India is lion-tailed macaque foundin its natural habitat?
Tamil Nadu, Kerala andKarnataka
166
●Mycorrhizal biotechnology has been used inrehabilitating degraded sites because Mycorrhizaenables the plants to resist drought and increaseabsorptive area, tolerate extremes of PH, and____.
Resist disease infestation
167
●Niter is the mineral form of potassium nitrate, KNO3,also known as:
Saltpeter
168
"●The oral polio vaccine (OPV), also called ""trivalentoral polio vaccine"" or ""Sabin vaccine"", consists ofa mixture of live, attenuated (weakened)poliovirus strains of all three poliovirus types. Itwas developed in 1961 by ____."
Albert Sabin
169
●Calcium is a mineral not only essential for bonehealth, but it is also required for muscularcontraction. Which mineral aids in nervetransmission and muscle contraction?
Sodium
170
●Which is a highly contagious but non-threateningdisease caused by primary infection with varicellazoster virus (VZV)?
Chickenpox
171
●What are used to construct gyrocompasses, whichcomplement or replace magnetic compasses (inships, aircraft and spacecraft, vehicles in general)and to assist in stability?
Gyroscopes
172
●Which device converts signals produced by one typeof device (as a computer) to a form compatiblewith another (as a telephone)?
Modem
173
●Vitamin D3 is produced by ultraviolet irradiation(UV) of its precursor 7-dehydrocholesterol. Bywhich other name is it known?
Cholecalciferol
174
●Caecum is a pouch that is considered to be thebeginning of the large intestine. The pylorus is theregion of the stomach that connects to the _____.
Duodenum
175
●What is the term for collection of techniques used tomaintain or grow plant cells, tissues or organsunder sterile conditions on a nutrient culturemedium of known composition?
Plant tissueculture
176
●The _____ plays a key role in memory, attention,perceptual awareness, thought, language, andconsciousness.
Cerebral cortex
177
●Paraffin wax refers to a white or colourless soft solidthat is used as a lubricant and for otherapplications. It is derived from:
Petroleum
178
●What is the term for a dimensionless quantityrepresenting the ratio of speed of an objectmoving through a fluid and the local speed ofsound?
Mach Number
179
●If force is expressed in Newton and the distance inmeter, then the work done is expressed in:
Joule
180
●The volume of which of the following materialsdecreases when it is heated from 0°C to 5°C?
Water
181
●'Archaeopteryx' is a connecting link between whichof the following classes of animal?
Reptilia andAves
182
●Pearl is mainly constituted of:
Calcium Carbonate
183
●When a person enters in a dark room from stronglight area, he is not able to see clearly for sometime. Later he gradually begins to see things. Thisis because:
Eyes become familiar with darknessin course of time
184
●For which desirable character the transgenic crop'Golden Rice' is produced?
Vitamin A
185
●Increasing the amount of pesticides in the organismsof successive trophic level is known as:
Bio-magnification
186
●Purified ____ is a semiconductor, with appearancemost similar to elemental silicon and naturallyreacts and forms complexes with oxygen in nature.
Germanium
187
●Polytetrafluoroethylene (PTFE) is a syntheticfluoropolymer of tetrafluoroethylene that findsnumerous applications. The best known brandname of PTFE is:
Teflon
188
●Which gas comprises primarily methane (CH4) andcarbon dioxide (CO2) and may have smallamounts of hydrogen sulphide (H2S), moistureand siloxanes?
Gobar Gas
189
●Seaweed is a source of iodine, necessary for thyroidfunction and to prevent:
Goitre
190
●Echoes from the waves are analyzed by computer toproduce a moving or still picture, called a ____, ona screen.
Sonogram
191
●The middle ear contains three tiny bones known asthe ossicles: malleus, incus, and:
Stapes
192
●One cup of cooked spinach provides one with 6.5 mgof which element/metal which is an essentialmineral needed by the human body and is acomponent of many proteins, includinghemoglobin?
Iron
193
●Which has the distinction of being the only naturallyoccurring fissile isotope?
Uranium-235
194
●Which is a predatory arthropod animal, easilyrecognized by the pair of grasping claws and thenarrow, segmented tail, often carried in acharacteristic forward curve over the back,ending with a venomous stinger?
Scorpion
195
●Starch or ____ is a carbohydrate consisting of a largenumber of glucose units joined by glycosidicbonds.
Amylum
196
●Which physical phenomenon was scientificallydetermined that a frame rate of less than 16frames per second (frame/s) caused the mind tosee flashing images?
Persistence of Vision
197
●Which technique allows the temperature to belowered so far that food can be stored for days oreven months?
Refrigeration
198
●At either end (both the generator and at the loads),voltage levels are reduced by ____ for saferoperation and less expensive equipment.
Transformers
199
●Electricity is transmitted at high voltages to reducethe energy lost in long-distance transmission.What does high voltage signify here?
110 kV orabove
200
●Which instrument converts sound energy to electricalenergy which is used as an output using sameenergy level amplified or it could be used torecord those same energy output and pattern toobe played again?
Microphone
201
●Which type of radiation is used to killmicroorganisms, molds and fungus in variousenvironmental applications?
Ultravioletradiation
202
●Of the three mediums (gas, liquid, and solid) whichtype of waves travel the slowest through gases,faster through liquids, and fastest through solids?
Sound waves
203
●___ are usually motionless organisms that absorbnutrients for survival. They include mushrooms,molds, and yeasts.
Fungi
204
.____ studies the distribution and abundance of livingorganisms, and the interactions between organismsand their environment.
Ecology
205
●Protists are mostly single-celled organisms that have anucleus. They usually live in water. Examples ofprotists include some algae, paramecium, and ___.
amoeba
206
"●The conductivity of an atom is dependent on the ""freemotion"" of its loosely bound:"
electrons
207
●The first series in cellular respiration is glycolysis, thebreakdown of glucose. In this step, the enzymehexokinase phosphorylates adds a phosphate groupto glucose in the cell's:
Cytoplasm
208
"●The theory of special relativity was proposed in _____by Albert Einstein in his article ""On theElectrodynamics of Moving Bodies""."
1905
209
●The total complement of genes in an organism or cell isknown as its _____ which is stored on one or morechromosomes.
genome
210
●Typhoid fever is an infectious disease caused by thebacteria Salmonella typhi. It is also known as:
Enteric fever
211
●The human musculoskeletal system consists of thehuman skeleton, made by bones attached to otherbones with joints, and skeletal muscle attached tothe skeleton by:
Tendons
212
●What is the amount of a substance that contains asmany elementary entities as there are atoms in 0.012kilogram (or 12 grams) of carbon-12?
Mole
213
●Who was the first man to ever use the term humanbiology?
Ernst Freiherr von Blomberg
