4:-2॥ ग ` 2 (5), ` 20 (>) , ` 20 (४) 2110 ` 20 (2)` 0101815
B:-only ` 2. (5) , ` 20 (>) , ` 20 (४) 01121
C:-only *2_(s)* and *2p_(z)° orbitals
0:-0111# ` *2p_(z)° orbital
Correct Answer:- Option-C
Question67:-The point group symmetry of *CH_(2)°
&:- ९ (20)
8:- ० (2५
௦0
0:- 0 (20)
Correct Answer:- Option-D
Question68:-The molecule that has *S_(6)° symmetry element is
4:28 (20 (6

C= °CH_(2) is

௦000)
0:58 (6)
Correct Answer:-Question Cancelled

Question69:-An element with density 11.2 g/'cm*(3)° forms an fcc lattice with edge length of *4xx10*(-8)* cm. Calculate
the atomic mass of the element.

A:-120.8
B:-240.4
C:-98
D:-107.9
Correct Answer:- Option-D
Question70:-The crystal with metal deficiency defect is
A:-NaCl
8-0
೦-೯6೦
D:-KCI
Correct Answer:- Option-C
Question71:-Which one of the following is used as piezo electric material ?
A:-Silica gel
B:-Graphite
C:-Kieselghur
D:-Quartz
Correct Answer:- Option-D

Question72:-Standard electrode potentials of three metals X, Y, Z are -1.2V, +.5V and -3V respectively. The reducing power
of these metals will be

A:-Y>Z>
B:-Y>X>Z
C:-Z>X>Y
D:-X>Y>Z
Correct Answer:- Option-C
Question73:-The most populated rotational state for HCI (B = 8.5 ‘cm*(-1)° ) at 300 Kis
A:-4
B:-3
‏ای‎
‎D:-8
‎Correct Answer:- Option-B
Question74:-The value of *d_(111)° in a cubic crystal is 325.6 pm. The value of ‘d_(333) “is
A:-208 pm
B:-308 pm
C:-108.5 pm
D:-420 pm
Correct Answer:- Option-C
Question75:-The molecule active in rotational microwave, infrared absorption as well as rotational Raman spectra is
^:-60 (2)
8:-56 (6)
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