General Chemistry (Part 2)

Question 1

What is the element that is in the highest percentage in the composition of the earth?

Answer 1

oxygen

Question 2

Formation of ozone hole is maximum over:

Answer 2

Antartica

Question 3

The presence of ozone in the stratosphere is responsible for:

Answer 3

checking the penetration of ultraviolet rays to the earth

Question 4

The advantage of detergents over soaps is:

Answer 4

detergents give lather even with hard water

Question 5

The fundamental particles present in the nucleus of an atom are:

Answer 5

proton & neutron

Question 6

Bleaching action of moist sulfur dioxide is because of its:

Answer 6

oxidizing property

Question 7

The long-range potential of nuclear energy in India depends on its reserves of:

Answer 7

uranium

Question 8

Which of the following gases will effuse out of football bladder most quickly?

He | H2 | N2 | O2

Answer 8

H2

Question 9

Which of the following alkali metals has highest specific heat?

Cesium | Rubidium | Potassium | Lithium

Answer 9

lithium

Question 10

In which of the following substances all carbon atoms are quaternary in nature?

Graphite | Diamond | Teflon | Naphthalene

Answer 10

diamond

Question 11

Which of the following is a natural dye?

Crystal violet | Aniline blue | Alizarin | Phenolphthalein

Answer 11

alizarin

Question 12

The ratio of pure gold in 18 carat gold is:

Answer 12

75%

Question 13

Diamond is harder than graphite because of:

Answer 13

difference in layers of atoms

Question 14

Gobar gas contains mainly:

Answer 14

methane

Question 15

Which of the following elements is non-radioactive?

Uranium | Thorium | Plutonium | Zirconium

Answer 15

zirconium

Question 16

The gas used for artificial fruit ripening of green fruit is:

Answer 16

ethylene

Question 17

What is the element required for solar energy conversion?

Answer 17

silicon

Question 18

Which of the following type of coal has the lowest proportion of volatile matter?

Lignite | Peat | Bituminous | Anthracite

Answer 18

anthracite

Question 19

What is the chemical name for Baking Soda?

Answer 19

sodium bicarbonate

Question 20

Saccharin is made up of:

Answer 20

toluene

Question 21

PVC is obtained by the polymerization of:

Answer 21

vinyl chloride

Question 22

Which of the following vegetable oils does not contain essential fatty acids?

Sunflower oil | Mustard oil | Coconut oil | Groundnut oil

Answer 22

sunflower oil

Question 23

Which of the following imparts deep blue color to glass?

Cobalt oxide | Cupric oxide | Ferrous oxide | Nickel oxide

Answer 23

nickel oxide

Question 24

Which of the following fibers catches fire least?

Nylon | Cotton | Rayon |Terrycot

Answer 24

cotton

Question 25

Which of the following is used as filler in tire of rubber? Carbon black | Coal | Coke |Graphite

Answer 25

carbon black

Question 26

Which of the following alloy is used in making magnet? Duralumin | Stainless steel | Alnico | Magnesium

Answer 26

alnico

Question 27

Milk tastes sour when it is left in open for some time. This happens due to the formation of

Answer 27

lactic acid

Question 28

The polymerization of which of the following is used in manufacturing of polythene in industry? Methane | Styrene | Acetylene | Ethylene

Answer 28

ethylene

Question 29

Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere? Nitrous oxide | Carbon dioxide |Chlorofluorocarbon | Sulfur dioxide

Answer 29

chlorofluorocarbon

Question 30

Aspirin is:

Answer 30

acetyl salicylic acid

Question 31

Cloud is a colloidal dispersion of:

Answer 31

Water drops in a dispersion medium of air.

Question 32

Which of the following is the petroleum wax? Bees wax | Carnauba wax | Paraffin wax | Jojoba wax

Answer 32

paraffin wax

Question 33

Which variety of coal contains recognizable traces of the original plant material?

Answer 33

peat

Question 34

Which is the purest form of iron?

Answer 34

wrought iron

Question 35

Which of the following metals form an amalgam with other metals? Lead | Tin | Zinc | Mercury

Answer 35

mercury

Question 36

Detergents used for cleaning clothes and utensils contain:

Answer 36

sulphonates

Question 37

Radioactive disintegration of uranium ultimately results in formation of:

Answer 37

lead

Question 38

Which of the following is used in making smoke bombs? Sulfur | Phosphorus | Hydrogen | Carbon

Answer 38

carbon

Question 39

German silver is an alloy of:

Answer 39

zinc, copper and nickel

Question 40

A metal is exposed to the atmosphere for some time, it becomes coated with green carbonate. The metal must be:

Answer 40

copper

Question 41

Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights electric shavers etc.?

Answer 41

nickel and cadmium

Question 42

Which of the following is a super cooled liquid? Ice cream | Teflon | Glass | Mercury

Answer 42

glass

Question 43

Metal are good conductors because:

Answer 43

They contain free electrons.

Question 44

The first metal used by a man was:

Answer 44

copper

Question 45

Which of the following is used to remove rust stains on cloth? Kerosene | Lime | Oxalic acid solution | Petrol

Answer 45

oxalic acid solution

Question 46

Curd is sour due to presence of:

Answer 46

lactic acid

Question 47

Tear gas is:

Answer 47

carbonyl chloride

Question 48

Which of the following compounds is commonly used as an antiseptic in mouthwashes and toothpastes? Borax | Saltpeter | Hydrogen peroxide | Sodium chloride

Answer 48

sodium chloride

Question 49

Which one of the following is used to restore the color of old oil paintings? Ozone |Hydrogen peroxide | Barium peroxide | Sodium peroxide

Answer 49

hydrogen peroxide

Question 50

Milk is a natural:

Answer 50

emulsion