Introduction to Organic Compounds Flashcards by Khristine Tapado

Which among the following chemical bond were
described by Kossel and Lewis?
a) Metallic bond
b) Polar covalent bond
c) Coordinate bond
d) Ionic and Covalent bond

d) Ionic and Covalent bond

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Which among the following is not a property of Ionic
bond?
a) Losing of electrons
b) Gain of electrons
c) Sharing of electrons
d) Transfer of electrons

c) Sharing of electrons

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Which among the following formation is not an example of Covalent bond?
a) LiF
b) NH3
c) CF4
d) HF

a) LiF

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If a bond is made up of a large number of organic
compound, then the bond is termed as?
a) Ionic bond
b) Metallic bond
c) Covalent bond
d) Dipolar bond

c) Covalent bond

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State whether the given statement is true or false “Ionic bonds are non-directional”
a) True
b) False

a) True

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Which among the following is not an example of
hydrogen bond?
a) H20
b) Liquid HCl
c) NH3
d) CHCl3

b) Liquid HCl

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Which among the following is both a molecule and a
compound?
a) C6 H12 O6
b) H2O
c) CO2
d) NaCl

b) H2O

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Atoms undergo bonding in order to ?
a) Attain stability
b) Lose stability
c) Move freely
d) increase energy

a) Attain stability

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Potassium Ion K+ has the same electronic configuration as that of which noble gases mentioned below ?
a) Krypton
b) Xenon
c) Argon
d) Radon

c) Argon

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An atom differs from its ion in which among the
following ?
a) Mass number
b) Atomic number
c) Neutrons
d) Number of protons

d) Number of protons

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The electronegativity difference between the covalently bonded atoms is
a) Less than 0
b) 0-0.3
c) 0.3-1.7
d) Over 1.7

b) 0-0.3

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What is the hybridization of Carbon atom in CF4?
a) sp2
b) sp
c) sp3d
d) sp3

d) sp3

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Bond energy and the corresponding bond length vary directly with each other. comment whether the statement is true or false.
a) True
b) False

b) False

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The energy which must be transferred to any atom to dislodge an electron is called?
a) Free energy
b) Ionization Energy
c) Quantum mechanical energy
d) Dissociation Energy

b) Ionization Energy

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In which molecule there is a complete linear
arrangement of all atoms?
a) BF_3
b) NH_3
c) CO_2
d) CH_4

c) CO_2

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Ten covalent bonds in the Lewis structure of Propane will account for how many valence electrons?
a) 10
b) 20
c) 14
d) 12

b) 20

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Which one have both sigma and pi bonds?
a) H2S
b) NO2
c) HClO
d) NaCN

d) NaCN

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What is the hybridization of oxygen in water?
a) sp
b) sp2
c) sp3
4) sp3d

c) sp3

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Which one has zero dipole moment?
a) C6H6
b) NH3
c) H2S
d) NO
View An

a) C6H6

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What is the hybridization of sulphur in H2S?
a) sp
b) sp2
c) sp3
d) sp3d

c) sp3

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PH3, So3, and HF are examples of polar molecules. State true or false
a) True
b) False

b) False

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Name the geometry of the central oxygen atom in the ozone molecule (o3)
a) Trigonal planar
b) Linear
c) Tetrahedral
d) Pyramidal

a) Trigonal planar

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Choose the one which is incorrect
a) BrO_4 – tetrahedral
b) PF_3 – pyramidal
c) ClO_4 – tetrahedral
d) BeBr_2 – linear

b) PF_3 – pyramidal

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Which among the following is not a physical property?
a) Melting point
b) Boiling point
c) Solubility
d) Reactivity

d) Reactivity

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5. A crystalline solid possess which one of the following property? a) Irregularity b) Non- symmetric c) Perfect geometric pattern

c) Perfect geometric pattern

6. Melting is process which can be stated by the below statements except, a) Change from a highly disordered stated to an ordered state b) Change from particles in crystal lattice to liquid state c) Thermal energy of particles overcome the intercrystalline forces that hold them d) Change from low temperature to high temperature

a) Change from a highly disordered stated to an ordered state

7. Which among the following is not associated with intermolecular forces? a) They hold neutral molecules b) Non- electrostatic in nature c) attraction of oppositely charged particles d) dipole-dipole interaction and van der Waals forces

b) Non- electrostatic in nature

8. Which among the following statement is not true? a) In liquid, particles are less regularly arranged and are free to move b) Boiling involves breaking up of group of molecules in liquid c) Boiling involves clubbing of oppositely charged ions d) Thermal energy of particles overcome cohesive forces that hold them

c) Boiling involves clubbing of oppositely charged ions

9. When one of the Hydrogen in Methane( CH4) is replaced by a hydroxyl group, then structurally methane resembles? a) Methanol b) Ethanol c) Water d) Both methanol and water

10. Which among the following does not match with the term solubility? a) The structural units get separated from each other b) The ion-dipole bond is very strong c) The spaces in between the structures are occupied by solvent molecules d) The electrostatic attraction between the oppositely charged ions and their corresponding ends are called iondipole bond

b) The ion-dipole bond is very strong

4. Select the one which is wrongly mapped a) Sodium carbonate – Washing soda b) Sodium chloride – common salt c) Calcium carbonate – slaked lime d) Sodium hydroxide – caustic soda

c) Calcium carbonate – slaked lime

1. Which one is correctly matched? a) Acids – pH range above7 b) Acids – pH range below 7 c) Acids – pH range 7( neutral) d) Acids – pH range 8-9

b) Acids – pH range below 7

2. A Strong acid is same as concentrated acid. State true or false a) False b) True

a) False

3. When an acid reacts with a metal, which one of the following gas is usually liberated? a) ammonia gas b) chlorine c) oxygen d) Hydrogen gas

d) Hydrogen gas

5. MgO + 2HCl —-> X + H2O a) Mg2Cl b) 2MgCl c) MgCl d) MgCl2

d) MgCl2

6. Select the one which is neither an acid nor base a) CH3COOH b) HCl c) KCl d) CH3OH

c) KCl

7. Which one will change from red litmus to blue? a) NaCl b) HCl c) KOH

b) HCl

8. What is the pH of 0.0001 molar HCl solution? a) 1 b) 2 c) 3 d) 4

d) 4

9. What will be the product when HNO3 reacts with NH4OH ? a) NH4 NO3 b) 2NH4 NO3 c) NH4 (NO3)2 d) NH2NO3

a) NH4 NO3

2. Isomerism that arises out of the difference in spatial arrangement of atoms or groups about the doubly bonded carbon atoms are called? (In specific) a) Structural Isomerism b) Stereo Isomerism c) Geometrical Isomerism d) Optical Isomerism

c) Geometrical Isomerism

10. Find the odd one out: a) Neutral salt : NaCl b) Acid salt : CuSO4.5H2O c) Basic salt: CuCO3.Cu(OH)2 d) Nonhydrated salt: KNO3

b) Acid salt : CuSO4.5H2O

1. Choose the incorrect option regarding Isomerism: a) They differ in both physical and chemical properties b) They have the different molecular formula c) There are two types of Isomerism : Structural and Stereo Isomerism d) Geometric and optical isomerism are two types of Stereo Isomerism

b) They have the different molecular formula

3. Isomers with similar groups on the same side are called as ” trans” isomers. State true or false a) True b) False

b) False

5. Which among the following does not exhibit geometric isomerism a) 1-hexene b) 2-hexene c) 3-hexene d) 4-hexene

a) 1-hexene

4. Which among the following defines Meso forms of isomers a) Meso form is optically inactive due to external compensation b) The molecules of the meso isomers are chiral c) It can be separated into optically active enantiometric pairs d) It is a single compound

d) It is a single compound

6. Which among the following is formed when an alcohol is dehydrated? a) alkane b) alkyne c) alkene d) aldehyde

c) alkene

9. The molecular formula C5H12 contains how many isomeric alkanes? a) 1 b) 2 c) 3 d) 4

c) 3

7. A fat on hydrolysis would yield? a) Glycerol and soap b) Ethanol and soap c) Ethanol and glycerol d) Only soap

a) Glycerol and soap

8. Which among the following correctly defines Diastereomer? a) These have same magnitude but different signs of optical rotation b) Nonsuperimposable object mirror relationship c) These differ in all physical properties d) Separation is very difficult

c) These differ in all physical properties

1. Hydrocarbons are organic compounds with element a) Hydrogen b) Oxygen c) Carbon d) Both hydrogen and carbon

d) Both hydrogen and carbon

2. Find the odd one out: a) Aromatic b) Alkanes c) Alkynes d) Alkenes

a) Aromatic

10. Identify the chiral molecule among the following: a) Isopropyl alcohol b) 2-pentanol c) 1-bromo 3-butene d) Isobutyl alcohol

d) Isobutyl alcohol

4. Ethane is obtained by electrolyzing a) Potassium formate b) Potassium succinate c) Potassium acetate d) Potassium fumarate

b) Potassium succinate

3. The simplest member of organic compounds is ? a) Methanol b) Methane c) Formaldehyde d) Formic acid

b) Methane

5. “Methane is a product of aerobic respiration”. State true or false a) False b) True

a) False

6. Calcium carbide on reaction with water gives? a) Methane b) Ethane c) propane d) Acetylene

d) Acetylene

8. The hydrocarbon in which all the 4 valencies of carbon are fully occupied is called as a) Alkene b) Alkyne c) Alkane d) Cycloalkane

c) Alkane

7. Name the process associated with acylation of benzene a) Friedel craft reaction b) Wurtz reaction c) Wurtz fitting reaction d) Debey Huckel reaction

a) Friedel craft reactio

9. Liquid hydrocarbon is converted into gaseous hydrocarbon by: a) Oxidation b) Hydrolysis c) Cracking d) Distillation

c) Cracking

10. Chlorination of alkanes is an example of a) Radical b) Elimination c) Free radical d) Addition

c) Free radical

1. When chlorine gas reacts with methane, the product formed is a) CHCl b) CH2Cl c) CH3Cl d) CH4Cl

c) CH3Cl

2. The methyl chloride undergoes substitution to form a) CHCl b) CH2Cl c) CHCl2 d) CH2Cl2

d) CH2Cl2

3. Methane reacts more readily with chlorine than with Fluorine. State true or false a) True b) False

b) False

4. Identify the one which is not a type of chlorination a) Free radical chlorination b) Electrophobic chlorination c) Ketone chlorination d) Chlorine addition reaction

b) Electrophobic chlorination

6. In the presence of red phosphorous, chlorine converts the fatty acids having alpha hydrogen atoms into a) Halo acids b) Alpha-halo acids c) Alpha,alpha-dihalo acids d) Trihalo acids

b) Alpha-halo acids

5. Which among the following on chlorination undergoes substitution at the alkyl group a) Ethers b) Hydroxyl groups c) Carbonyl compounds d) Carboxylic acids

a) Ethers

7. Chlorine in the presence of which among the following generates positively charged species? a) Ferric chloride b) Anhydrous ferric chloride c) Ferrous chloride d) Anhydrous ferrous chloride

b) Anhydrous ferric chloride

8. p-nitrotoluene on reaction with chlorine forms hydrogen chloride and a) p-Nitrobenzyl chloride b) o-Nitrobenzyl chloride c) m-Nitrobenzyl chloride d) Nitrobenzyl chloride

a) p-Nitrobenzyl chloride

1. The rate of the reaction is equal to the product of three factors listed below except a) Collision frequency b) Energy factor c) Orientation factor d) pH factor

d) pH factor

9. Chlorination of cyclobutane gives which among the following in addition to hydrogen chloride a) Cyclobutyl chloride b) Cyclobutyl chlorite c) 1-chlorobutene d) 1,1-chlorobutene

b) Cyclobutyl chlorite

10. The step in which Cl-Cl bond homolysis occurs is called: a) Initiation step b) Propagation step c) Intermediate step d) Termination step

a) Initiation step

4. Identify the true statement regarding catalyst a) Always decreases the rate of the reaction b) Always increases the activation energy of the reaction c) Actually participates in the reaction d) Changes the equilibrium concentration of the product

c) Actually participates in the reaction

3. The frequency of molecular collision increases if a) The concentration of product increases b) The concentration of product decreases c) The concentration of reactant increases d) The concentration of reactant decreases

c) The concentration of reactant increases

2. Temperature and pressure are the only factors which affect the reaction rate. state true or false a) True b) False

b) False

5. From the choices given below, identify the activation energy of a reaction whose rate constant increases by 100 when the temperature changes from 300K to 360K a) 53 b) 69 c) 35 d) 42

b) 69

6. Identify the unit of “k” in moles/L for the rate law: k[A][B]pow2 a) L/mol/s b) L(pow2)/mol/s c) L(pow2)* s(pow2)/mol(pow2) d) s

d) s

7. Which among the following catalyst increases the rate of the reaction a) Calcium carbonate b) Calcium chloride c) Calcium hydroxide d) Calcium sulphate

a) Calcium carbonate

8. Which is not a type of catalyst: a) Positive catalyst b) Negative catalyst c) Autocatalyst d) homogeneous catalysis

d) homogeneous catalysis

9. The speed of a chemical reaction a) Is independent of the contact surface b) Is constant no matter what the temperature is c) Varies inversely with the absolute temperature d) Is extremely rapid between the ions in aqueous solution

d) Is extremely rapid between the ions in aqueous solution

10. The overall order for the reaction 2A+ B—> 2C with rate equation rate=k[A]^2[B] is a) 0 b) 1 c) 2 d) 3

d) 3

1. Saturated hydrocarbons are otherwise referred as a) Alkanes b) Alkenes c) Alkynes d) Alkaloids

a) Alkanes

2. Identify the correct alkane name for the molecular formula C30H62 a) Propdecane b) Eicosane c) Triacontane d) Dodecane

c) Triacontane

4. In which among the following alkane, a carbon atom is displaced so as to form a compactly structure with the resemblance of a butterfly wing a) Cyclopropane b) Cyclobutane c) Cyclopentane d) Cyclohexane

b) Cyclobutane

3. Identify the smallest alkane which can form a ring structure (cycloalkane) a) Cyclomethane b) Methane c) Cyclopropane d) Propane

c) Cyclopropane

6. The substituent in the chain is named by replacing the “ane” in the alkanes by a) ene b) ic c) one d) yl

d) yl

7. The C=C bond in the chain of the compound considered is shown by a) Specifying the number of carbon atoms associated with the bond b) Specifying the number of carbon atoms at beginning of the C=C bond c) Specifying the number of carbon atoms at end of the C=C bond d) Specifying the number of carbon atoms in the entire chain

b) Specifying the number of carbon atoms at beginning of the C=C bond

5. The first step in IUPAC nomenclature is to identify the total number of carbon atoms present in the compound. State true or false a) True b) False

b) False

8. Dienes are the name given to compounds with a) Exactly a double bond b) Exactly a triple bond c) Exactly two double bond d) more than two double bond

c) Exactly two double bond

9. Triple bond with two carbon atoms on either side is called a) Methnyl group b) Ethynyl group c) Propionyl group d) Propargyl group

b) Ethynyl group

10. The substituent groups that are commonly associated with benzene ring are a) Phenyl and benzyl b) Propyl and phenyl c) Methyl and benzyl d) Butyl and phenyl

a) Phenyl and benzyl

Introduction to Organic Compounds Flashcards

(90 cards)