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45. 1°F (one degree Fahrenheit) correspond to

46.

47.

48.

49.

50.

51.

52.

1

A) 22 of the interval between the ice point and steam point of water
1 ^ ^ ^ ^

B) 90 of the interval between the ice point and steam point of water

1
0) 7 of the interval between the ice point and steam point of water

1
D) 220 of the interval between the ice point and steam point of water

If the surface tension of a soap solution is 0.028 Nm-', what is the work done in
blowing a soap bubble of radius 6 cm in units of joule ?
A) 0.00253 B) 0.001266 C) 0.0253 D) 0.00633

Which of the following is the origin of characteristic X-rays ?

A) The de-excitation of electrons from the cathode after collision with the target

B) The transition of orbital electrons from higher energy levels to the vacancy in the
K-shell

C) The de-excitation of the atoms in the target material

D) The de-excitation of electrons knocked out from the K-shell by the incident
electrons

The mission announced by NASA in 2021 to study the atmospheric change of Venus
over time is

A) VERITAS B) JWST C) The Unicorn D) DAVINCI Plus

Atomic size is of the order of
A) 10°"? cm ‏ر8‎ 10-14 cm ௦ 10100 0) 105 ‏مه‎

The +3 ion of which one of the following has half filled 4f-subshell ?
A) La B) Lu C) Gd D) Ac

Which drug is not under the chemical class of indole ?
A) Quinidine B) Quinine C) Atropine D) Camptothecin

Which of the following, an illegal drug derived from the hemp plant “cannabis sativa” ?
A) Opium B) Marijuana C) MDMA D) Crack

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