NMR Questions with Solved Answers for GPAT,GATE, UGC NET JRF & NIPER EXAM

NMR NUMBERCAL QUESTIONS

Q.1 if 2000 microgram paracetamol is dissolve in 0.1N NaoH. So what is concentration of solutions ?

Ans. We know that,

1000 microgram=1gram

2000 microgram = 2 gram

If we disolved 1 gram in 1 litre this solution concentration is 1 ppm.

So when we dissolved 2 gram in 1 litre this solution concentration is 2 PPM

Q.2 IF we dissolved 1 gram powder X in 100 ml of y solution so what is concentration of this solution ?

Ans. If we dissolve 1 gram in 1000ml so concentration is 1μg/ml.

So, we dissolve 1 gram in 100ml so concentration is 1000mg/ml.

Q.3 unit of chemical shift is

Ans. PPM.

Q.4 how many peak we see in NMR spect of Butanol?

Ans. 5

Q.5. how many peak see in NMR spect of ethanol ?

Ans. 3

Q.6 how many peak see in NMR spect of propane ?

Ans. 2

Q.7 which of following has the highest chemical shift value ?

A. CH3I

B. CH3Br

C.CH3F

D. CH3cl

Ans. C

Q.8 which of the following has the lowest chemical shift value ?

A. CH3I

B. CH3Br

C.CH3F

D. CH3cl

Ans.A

Q.9 Transition metal in NMR SPECTROSCOPY is

A. Ferromagnetic

B. Paramagnetic

C. Diamagnetic

D. All of the

Ans.B

Q. 10 how many signal is produced by methyl cyclopropane ?

C. 4

Q.11 IN NMR if the atom contain two near by proton then these will produce ?

A. Doublet

B. Triplets

C. Quartet

D. All of the

Ans.B

Q.12 IN NMR if the atom contain three near by proton then these will produce?

A. Doublet

B. Triplets

C. Quartet

D All of the

Ans. C

 

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