Haloalkanes and Haloarenes - Online Test
Q1. Carbon tetra chloride has a dipole moment
Answer : Option B
Explaination / Solution:
CCl4 is symmetrical hence dipole moment is zeo.
Q2.
A hydrocarbon C5H10 does not react with chlorine in dark but gives a single monochloro compound
C5H9C l in bright sunlight. The hydrocarbon is
Answer : Option D
Explaination / Solution:
Alkanes undergoes halogenations in prrsence of light.
Q3. Liver when chronically exposed to chloroform gets damaged because
Answer : Option A
Explaination / Solution:
CHCl3 oxidises to form COCl2 which is a poison.
Q4. Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide?
Answer : Option D
Explaination / Solution:
Neopentane has all same type of hydrogen and has molecular weight 72u
Q5. A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is
Answer : Option D
Explaination / Solution:
This is intramolecular wurtz reaction.
Q6. The synthesis of 3 – octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are
Answer : Option D
Explaination / Solution:
NaNH2 is very strong base it will abstract H from alkyne and then substitution reaction will occur.
Q7. A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is ______.
Answer : Option B
Explaination / Solution:
Intramolecular wurtz leading to cyclisaion.
Q8. Decomposition of benzene diozonium chloride by using Cu2Cl2/HCl to form chlorobenzene is
Answer : Option C
Explaination / Solution:
Q9.
IUPAC name of (CH3)3CCl
Answer : Option B
Explaination / Solution:
Longest chain will be of three carbon to which Cl and CH3 will be attached at 2 position.
Q10.
Maximum number of molecules of CH3I that can react with a molecule of CH3NH2 is
Answer : Option D
Explaination / Solution:
CH3NH2 can act as nucleophile to cause substitution reaction. (CH3)4N+ this is formed when 3 moles of CH3NH2 reacts with methyl halide.
