1. How many NMR signals are formed for 2-chloro propene.
a. 2 b. 3 ☑️ c. 1 d. none
2. Tell the of NMR signals in case of 1, 2 dichloropropane.
a. 2 b. 3 c. 4☑️ d. 5
3. Write the multiplicity of the signals in CH3 CH2 O CH2 CH3 in NMR spectrum
a. Two triplets
b. a triplet and a quartet☑️
c. two singlets
d.two singlets and two triplets
4. Write the multiplicity of the signals in CH3 CH2 OH in NMR spectroscopy.
a. singlet, triplet and quartet☑️
b. a triplet and a quartet
c. three singlets
d. none of these
5. In on organic compound, the proton linked to sp2 hybridised carbonation is
more deshielded than that linked to
a. sp hybridised carbon
b. sp3 hybridised carbon
c. Both of these☑️
d. none of these
6. In ethyl benzene ( C6H5 CH2 CH3 ) the tau value for CH2 proton will be_______
than those of CH3 protons.
a. lower☑️
b. higher
c. much higher
d. not sure
7. Out of the olefinic, aldehydic and aromatic protons, the decreasing deshielding has the order.
a. olefinic ˃ aldehydic ˃ aromatic
b. aldehydic ˃ olefinic ˃ aromatic ☑️
c. aromatic ˃ olefinic ˃ aldehydic
d. olefinic ˃ aromatic ˃ aldehydic
8. Which of the following solvents cannot be used in NMR spectroscopy ?
a. CCI4
b. CS2
c. CHCl3☑️
d. (CCl3 )2 C = O
9. The spin is an integer 1, 2, 3, ….. for a nucleus having
a. even number of protons and neutrons
b. odd mass number
c. even mass number and odd number of protons☑️
d. none of these
10. NMR spectra are observed in …………region
a. radio frequency☑️
b. microwave
c. uv/vis
d. X-ray
11. Write the number of signals and their multiplicities for the NMR spectrum of the compound, Cl F2C-CH2 Cl.
a. one, triplet☑️
b. two, singlet
c. two, triplets
d. none of these
12. For two sets of protons for CH3 CH2 CO-, part of an organic compound, the value of J for these two sets will be
a. different
b. same☑️
c. may be same or different
13. The signal (s) for compound like A-CH2- CH2 B will be :
a. two, triplets☑️
b. two, singlets
c. one singlet
d. one triplet
14. The pair of compounds which can be distinguished by NMR spectroscopy are
a. CH3CH2OH and CH3 O CH3
b. CH3 CH2 CH2 OH and CH3 CH (OH) CH3
c. CH3 CH2 CHO and CH3 CO CH3
d. all of these☑️
15. The NMR spectroscopy is useful for the detection of
a. hydrogen bonding
b. aromaticity
c. geometrical isomers
d. all of these☑️
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