Q.1 Which one of the following is least reactive towards electrophilic substitution reaction?
A) Phenol
B) Benzene
C) Chlorobenzene
D) Toluene
Q.2 The primary,secondary and tertiary structures of butyl alcohol are ___________ isomers of each other?
A) Positional
B) Functional group
C) Chain
D) Cis-Trans
Q.3 The addition of HBr to propene follow
A) Markonikov's rule
B) Hund's rule
C) Pauli's rule
D) Aufbau
Q.4 The General formula of alkynes is
A) CnH2n
B) CnH2n-2
C) CnHn
D) CnHn+2
Q.5 Which one is more reactive?
A) Benzene
B) Ethene
C) Ethyne
D) Ethane
Q.6 Which of the following is strictly hydrocarbons
A) Phenol
B) Toluene
C) Aniline
D) Pyridine
Answers:
Q.1 C
Q.2 A
Q.3 A
Q.4 B
Q.5 B
Q.6 B
Explanation: Hydrocarbons must contain only hydrogen and carbon elements that is why correct option is toluene (methyl benzene).Phenol,Aniline and pyridine contain oxygen,nitrogen and nitrogen respectively so these compounds are organic in nature but not strictly hydrocarbons.
A) Phenol
B) Benzene
C) Chlorobenzene
D) Toluene
Q.2 The primary,secondary and tertiary structures of butyl alcohol are ___________ isomers of each other?
A) Positional
B) Functional group
C) Chain
D) Cis-Trans
Q.3 The addition of HBr to propene follow
A) Markonikov's rule
B) Hund's rule
C) Pauli's rule
D) Aufbau
Q.4 The General formula of alkynes is
A) CnH2n
B) CnH2n-2
C) CnHn
D) CnHn+2
Q.5 Which one is more reactive?
A) Benzene
B) Ethene
C) Ethyne
D) Ethane
Q.6 Which of the following is strictly hydrocarbons
A) Phenol
B) Toluene
C) Aniline
D) Pyridine
Answers:
Q.1 C
Q.2 A
Q.3 A
Q.4 B
Q.5 B
Q.6 B
Explanation: Hydrocarbons must contain only hydrogen and carbon elements that is why correct option is toluene (methyl benzene).Phenol,Aniline and pyridine contain oxygen,nitrogen and nitrogen respectively so these compounds are organic in nature but not strictly hydrocarbons.
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