17
Q:

Which of the following processes is used to remove reducible oxides from the metal?

A) liquation B) cupellation
C) poling D) electro refining

Answer:   C) poling

Explanation:
Subject: Chemistry
Q:

In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is

A) Option 1 B) Option 2
C) Option 3 D) Option 4
 
Answer & Explanation Answer: A) Option 1

Explanation:

So formula of compound is 

i.e., 

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1 153
Q:

The degree of dissociation () of a weak electrolyte,  is related to van't Hoff factor (i) by the expression:

A) 1 is correct B) 2 is correct
C) 3 is correct D) 4 is correct
 
Answer & Explanation Answer: D) 4 is correct

Explanation:

Total Moles = 

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Q:

Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of :

A) An acetylenic triple bond B) Two ethylenic double bonds
C) A vinyl group D) An isopropyl group
 
Answer & Explanation Answer: C) A vinyl group

Explanation:

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0 27
Q:

The structure of  is

A) Pentagonal bipyramid B) Square pyramid
C) Trigonal bipyramid D) Octahedral
 
Answer & Explanation Answer: A) Pentagonal bipyramid

Explanation:

Hybridisation of iodine is 

So, structure is pentagonal bipyramid.

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0 27
Q:

The outer electron configuration of Gd (Atomic No : 64) is

Answer

Answer : 1


Sol :

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