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CSIR NET 2023 Weekend Booster Quiz | Chemical Science (4 June 2023)

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Question 1

The density of Li metal is 0.53 g cm-3 and the separation of (110) planes of metal is 350 pm. Molar mass of LI =6.941 g mol-1. Unit cell is

Question 2

The major product formed in the following reaction is:

Question 3

The approximate length (in μm) of the extended chain (contour length) of polypropylene of molar mass 420 kg mol–1 is close to:

Question 4

The IR stretching frequencies (cm-1) for the compound X are as follows:

3300- 3500 (S, br); 3000(m); 2225 (s); 1680 (s)

1.PNG

The correct assigned values for the absorption band are?

Question 5

The set among the following in which all members are magic numbers of nucleons is

Question 6

Name the element that can be used as an ionisation suppressor.

Question 7

A particle observed after the disintegration of 233Pa is:

Question 8

Number of signals observed in the 1H NMR spectrum of the following compounds P, Q, R, S, respectively are?

P.26.PNG       Q.27.PNG           R.28.PNG            S.29.PNG

Question 9

The y-intercept obtained from the plot of viscosity of a series of polymer solution against the concentration is 0.05 . The proportionality constant K and exponent a for the polymer-solvent pair are 510-5 and 0.5, respectively. The molar mass of the polymer in g mol-1 is

Question 10

The major product formed in the following reaction is?

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Jun 4CSIR NET & SET