Infra-Red Spectroscopy MCQ Questions for CSIR UGC NET & GATE - Download PDF

IR Spectroscopy
MCQs for CSIR NET & GATE

Organic Spectroscopy
Topic wise Assignment-1

QUIZ              PDF

Q1. which of the following spectroscopic techniques will be useful to distinguish between M-SCN and M-NCS binding modes?

[NET June 2011]

(a) NMR
(b) IR
(c) EPR
(d) Mass

Q2. The order of carbonyl stretching frequency in IR Spectra of ketone, amide and anhydride is-

[NET June 2011]

(a) anhydride > amide > ketone
(b) ketone > amide > anhydride
(c) amide > anhydride > ketone
(d) anhydride > ketone > amide

Q3. In the IR spectrum, carbonyl absorption band for the following compound appears at

[NET Dec 2011]

(a) 1810 cm^-1
(b) 1770 cm^-1
(c) 1730 cm^-1
(d) 1690 cm^-1

Q4. In the IR spectrum of p-nitrophenyl acetate, the carbonyl absorption band appears at

[NET Dec 2012]

(a) 1670 cm^-1
(b) 1700 cm^-1
(c) 1730 cm^-1
(d) 1760 cm^-1

Q5. In the IR spectrum, the absorption band due to carbonyl group in phenyl acetate appears at

[NET June 2013]

(a) 1800 cm^-1
(b) 1760 cm^-1
(c) 1710 cm^-1
(d) 1660 cm^-1

Q6. In the IR spectrum of p-nitrophenyl acetate, the carbonyl absorption band appears at

[NET Dec 2013]

(a) 1600 cm^-1
(b) 1700 cm^-1
(c) 1730 cm^-1
(d) 1770 cm^-1

Q7. Compound that exhibits sharp bands at 3300 cm^-1 and 2150 cm^-1 in the IR spectrum is

[NET June 2015]

(a) 1-butyne
(b) 2-butyne
(c) butyronitrile
(d) butylamine

Q8. Correctly matched structure and carbonyl stretching frequency set is

[NET Dec 2015]

(a) P-Y , Q-Z , R-X
(b) P-Y , Q-X , R-Z
(c) P-Z , Q-Y , R-X
(d) P-X , Q-Z , R-Y

Q9. Among the following, the compound that displays an IR band at 2150 cm^-1 is

[NET June 2016]

Q10. The compound which shows IR frequencies at both 3314 and 2126 cm^-1 is

[NET Dec 2016]

(a) CH₃(CH₂)₄CH₂SH
(b) CH₃(CH₂)₄CH₂C≡N
(c) CH₃(CH₂)₄CH₂C≡CH
(d) CH₃(CH₂)₂C≡C(CH₂)₂CH₃

Ans Key:

1.b 2.d 3.b 4.d 5.b 6.d 7.a 8.a 9.c 10.c

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