MCQ Quiz on NMR and XRD

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1. Which proton shows the highest chemical shift value in 1HNMR?

1 point

CHCl3

CH2Cl2

CH3Cl

CH4

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2. What is the unit of chemical shift?

1 point

ppm

TMS

tesla

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3. How many signal see in 1HNMR spectra of neat ethanol?

1 point

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4. Chemical shift provides an idea chemical environment of atoms.

1 point

No, only provides magnetic environment

True

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5. Calculated many d values form powder XRD pattern of a polycrystalline paracetamol material, In case of a single crystalline material only one d value is possible.

1 point

True

False

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6. Conventional Geiger–Müller counter cannot detect which radiation?

1 point

visible light

X-ray

Ionizing radiation

Gamma radiation

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7. Goniometer helps in

1 point

Determination of magnetic flux

Absorbing excess X-rays

sample holding crystal samples and measures 2 theta values

used in 13CNMR

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8. Which of the following statement is wrong? (GPAT 2010 question)

1 point

Carbon NMR is less sensitive than Proton NMR

C-12 nucleus is magnetically not active

Both 13C and 1H have same spin quantum numbers

The gyromagnetic ration of 1H is lesser than that of 13C

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9. X-ray crystallographic (SCXRD) analysis of an optically active compound determines its (GPAT 2010 question)

1 point

Optical rotatory dispersive power

Absolute configuration

Relative configuration

Optical purity

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10. The natural abundance of 13C is about

1 point

four times less than 1H

0.11% of total carbon

1.1% of total carbon

99% of total carbon

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