Correct Answer:- Option-D
Question75:-The point group symmetry of the staggered form of ethane molecule is :

കഴ്‌
8:- 0 മ്‌
€~ (ग
0-03

Correct Answer:- Option-B
Question76:-The plane symmetry is also called :

A:-t-plane

B:-7-plane

C:-'sigma’ -plane

D:-?-plane

Correct Answer:- Option-C
Question77:-Which of the following heterocyclic compound is not aromatic 7

A:-Pyridine

B:-Pyrrole

C:-Furan

D:-Piperidine

Correct Answer:- Option-D
Question78:-Free radicals are detected by the :

A:-Mass spectra

B:-U.V. spectra

C:-CIDNP

D:-Mossbauer spectra

Correct Answer:- Option-C
Question79:-A class of pericyclic reaction is :

A:-Hydroboration reaction

B:-Reimer - Tiemann reaction

C:-Grignard reaction

D:-Diels - Alder reaction

Correct Answer:- Option-D
Question80:-In the R-S notation, the prefixes R and S stands for:

A:-Rectus-Simiantus

D:-Rotamer-Sinister

Correct Answer:- Option-B
Question81:-Which among the following will be paramagnetic 7

&:- (0) 6` ` `

8:-68(0} 5` ` `

க 20)

D:-"V{(CO) 6"

Correct Answer:- Option-D
Question82:-The difference between the potential of the electrode when the gas evolution was actually observed and the
theoretical reversible value of the same solution was called :

A:-Electrode potential
B:-Over potential
C:-Decomposition potential
D:-None of these
Correct Answer:- Option-B
Question83:-In atomic absorption spectroscopy the addition of Sr or La reduce the contents of :

Correct Answer:- Option-A
Question84:-The crystal field splitting energy for octahedral(c) and tetrahedral complex( } is related as :