1. Which pair represents chain isomers?
A. CH3CHCl2 and ClCH2CH2Cl B. n-propyl alcohol and isopropyl alcohol
C. 2- methylbutane and neopentane D. Diethylether and dipropyl ether
10. Assertion Pentane and 3-methylpentane are chain isomers.
Reason Pentane is a straight-chain alkane while 3-methyl pentane is a branched-chain
alkane
A. Both Assertion and Reason are correct and Reason is the correct explanation for
Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C. Assertion is correct but Reason is incorrect D. Assertion is incorrect and Reason is correct
11. Assertion Metamers can also be position or chain isomers.
Reason Tautomerism was introduced by C.P Laar to explain the chemical reactivity of a
substance according to two possible structures.
12. Which are isomers?
A. Ethanol and ethoxy ethane B. Methanol and methoxy methane
C. Propionic acid and ethyl acetate D. Propanal and acetone
13. Which of the following pairs is/are functional isomers?
A. butan-2-ol and ethoxy ethane B. ethanal and vinyl alcohol
C. acetaldehyde and acetone D. ethanoic acid and methyl formate
14. Which of the following pairs contain functional isomers?
A
B
C
15. Which of the following are not functional isomers of each other?
A. CH3CH2NO2 and CH3CH2ON=O B. C2H5CHO and CH3COCH3
C. CH3CH2NH2 and CH3NHCH3 D. C3H7NH2 and (CH3)2CHNH2
16. A functional isomer of 1-butyne is:
A. 2-butyne B. 1-butene C. 2-butene D. 1,3-butadiene
17. Ethyl acetate is not a functional group isomer of :
A. 4-hydroxybutanone B. 3-hydroxybutanal C. butane-2,3-diol D. isobutyric acid
18. The functional isomer of ethanenitrile is:
A. ethyl carbylamines B. methanenitrile
C. methyl isocyanide D. propanenitrile
19. Which of the following is the functional isomer of methyl acetate?
A. Ethyl acetate B. Propanoic acid C. Ethyl formate D. Propanone
20. Diethylamine is a functional group isomer of:
A Propyl cyanide B. Isoprpyl iscyanide C. 2-butanamine D. Ethylamine
21. The number of structural isomers of C3H5Br3 is :
A. 4 B. 5 C. 6 D. 7
22.The number of metameric ethers possible with the formula C4H10O is/are:
A. 4 B. 5 C. 6 D. 7
23. The number of aromatic isomers for C7H8O ?
A. 4 B. 5 C. 6 D. 7
24. Which of the following pairs of carbon skeletons is an example of isomers?
A
B
C
25. A compound A has the molecular formula C5H9Cl. It does not react with bromine in carbon
tetrachloride. On treatment with strong base it produces a single structure isomer B. B has a
molecular formula C5H8 and reacts with bromine in carbon tetrachloride. Ozonolysis of B produces
a compound C which has a molecular formula C5H8O2.Which of the following structures is that of
A?
A B C D
26. A white precipitate was formed slowly when silver nitrate was added to a compound (A) with
molecular formula C6H13Cl. Compound (A) on treatment with hot alcoholic KOH gave a mixture of
two isomeric alkenes (B) and (C), having formula C6H12. The mixture of (B) and (C), on ozonolysis
furnished four compounds.
a. CH3CHO b. C2H5CHO c. CH3COCH3 d. (CH3)2CHCHO
27. Deduce the structural formula of a compound A (C6H10) which show the following reactions.
i.Adds 2 mol of H2 to form 2−methyl pentane.
ii. Reacts with aqueous H2SO4+HgSO4 solution to give a carbonyl compound.
iii. Does not react with ammoniacal AgNO3 solution.
28.The type of isomerism found in urea molecule is:
A. chain isomerism B. position isomerism C. tautomerism D. geometrical isomerism
29. C3H9N represents:
A. A primary amine only B. A secondary amine only
C. A tertiary amine only D. Two primary, a secondary and a tertiary amine
22. The pair of structures represents:
A. enantiomers B. position isomers C. Conformers
D.None
23. Which of the following pairs of structures do not represent isomers?
A. B. C. D.
24. Which of the following functional group(s) shows metamerism?
A.A−O− B. −S− C. −NH− D. −OH
25. The groups that show metamerism include :
26. The structures of (CH3)3CBr and CH3(CH2)3Br represent:
A. chain isomerism B. position isomerism
C. chain as well as position isomerism D. functional isomerism
27. Which of the following compounds will show metamerism?
A. CH3−CO−C2H5 B. C2H5−S−C2H5 C. CH3−O−CH3 D. CH3−O−C2H5
28. BrCH2−CH2−CH=O and CH3−CH2−∣BrC=O are :
A.Functional isomers B. Position isomers C. Chain isomers. D. Metamers
29. The two compounds
CH3−CH2−CO∥−CH2−CH2−CH3 and CH3−CO∥− ∣ CH3C CH3 ∣−CH3
may be considered as:
A. position isomers B. metamers C. stereoisomers D. Tautomers
30. Which is correct about the above given compounds?
(p) CH3−CH2−NH−CH3∣CH−CH3 (q) CH3−NH−CH2−CH3∣CH−CH3
(r) CH3−CH2−CH3∣N−CH2−CH3 (s) CH3−CH2−NH−CH2−CH2−CH3
A. (p) and (r) are metamers B. (q) and (s) are chain isomers
C. (r) and (s) are functional isomers D. (p) and (q) are position isomers
31. The molecules CH3−C∣∣O−CH2−C∣∣O−O−C2H3 and CH3−C∣OH=CH−C∣∣O−O−C2H5 are:
A. geometrical isomers B. tautomers C. diastereomers D. metamers
8. Monocarboxylic acids are functional isomers of :
(1) Esters (2) Amines (3) Ethers (4) Alcohols
