2
Q:

Chloroform used as anaesthetic should be preserved in the dark in tightly stoppered bottles because otherwise

A) it becomes coloured B) it gets evaporated in air
C) it gets oxidised to phosgene D) it gets decomposed to chloropicrin

Answer:   C) it gets oxidised to phosgene

Explanation:

Chloroform,  is easily oxidised to the highly poisonous gas known as phosgene or carbonyl chloride . Hence if it is used as anaesthetic it should be kept free from sunlight and air.

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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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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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 9
Q:

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

Answer

Answer : 1


Sol :

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Subject: Chemistry Exam Prep: AIEEE

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