11. In compound $$'X’$$ all the bond angles are exactly $${109^ \circ }28',\,\,'X'$$ is
A
chloromethane
B
carbon tetrachloride
C
iodoform
D
chloroform
Answer :
carbon tetrachloride
12. The number of structural and configurational isomers of a bromo compound, $${C_5}{H_9}Br,$$ formed by the addition of $$HBr$$ to 2 - pentyne respectively are
A
1 and 2
B
2 and 4
C
4 and 2
D
2 and 1
Answer :
2 and 4
13. Which one of the following is correct?
A
Reduction of any aldehyde gives secondary alcohol
B
Reaction of vegetable oil with $${H_2}S{O_4}$$ gives glycerine
C
Alcoholic iodine with $$NaOH$$ gives iodoform
D
Sucrose on reaction with $$NaCl$$ gives invert sugar
Answer :
Alcoholic iodine with $$NaOH$$ gives iodoform
14. What would be the product formed when 1 - bromo - 3 - chlorocyclobutane reacts with two equivalents of metallic sodium in ether?
A
B
C
D
Answer :
15. Which of the following is correct?
A
Cycloheptane is an aromatic compound
B
Diastase is an enzyme
C
Acetophenone is an ether
D
All of the above
Answer :
Diastase is an enzyme
16.
Identify the set of reagent / reaction conditions $$'X'$$ and $$'Y'$$ in
the following set of transformations
A
$$X = {\text{dilute aqueous}}\,NaOH,\,{20^ \circ }C;\,Y = HBr/{\text{acetic acid,}}\,{20^ \circ }C$$
B
$$X = {\text{concentrated alcoholic}}\,NaOH,\,{80^ \circ }C;\,Y = HBr/{\text{acetic acid}},\,{20^ \circ }C$$
C
$$X = {\text{dilute aqueous}}\,NaOH,{20^ \circ }C,\,Y = B{r_2}/CHC{l_3},{0^ \circ }C$$
D
$$X = {\text{concentrated alcoholic}}\,NaOH,\,{80^ \circ }C;\,Y = B{r_2}/CHC{l_3},\,{0^ \circ }C$$
Answer :
$$X = {\text{concentrated alcoholic}}\,NaOH,\,{80^ \circ }C;\,Y = HBr/{\text{acetic acid}},\,{20^ \circ }C$$
17. Chlorobenzene can be prepared by reacting aniline with :
A
hydrochloric acid
B
cuprous chloride
C
chlorine in presence of anhydrous aluminium chloride
D
nitrous acid followed by heating with cuprous chloride
Answer :
nitrous acid followed by heating with cuprous chloride
18. 1 - Chlorobutane on reaction with alcoholic potash gives
A
1 - butene
B
1 - butanol
C
2 - butene
D
2 - butanol
Answer :
1 - butene
19. Trichloroacetaldehyde, $$CC{l_3}CHO$$ reacts with chlorobenzene in the presence of sulphuric acid and produces
A
B
C
D
Answer :
20. How many chiral compounds are possible on monochlorination of 2 - methyl butane ?
A
8
B
2
C
4
D
6
Answer :
4
