9
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, CHCl3 is easily oxidised to the highly poisonous gas known as phosgene or carbonyl chloride COCl2. Hence if it is used as anaesthetic it should be kept free from sunlight and air.

Subject: Chemistry
Exam Prep: AIEEE
Q:

The elements belonging to groups ............ are known as 'd' block elements.

 

A) 3 to 12 B) 1 and 2
C) 13 to 18 D) 3 to 10
 
Answer & Explanation Answer: A) 3 to 12

Explanation:
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0 322
Q:

220 g of carbon dioxide contains .......... moles.

 

A) 5 B) 6
C) 3 D) 4
 
Answer & Explanation Answer: A) 5

Explanation:
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0 439
Q:

A solution contains 42 g of common salt in 320 g of water. Calculate the concentration in terms of mass by mass percentage of the solution?

 

A) 11.6 g B) 12.6%
C) 11.6% D) 10.36%
 
Answer & Explanation Answer: C) 11.6%

Explanation:
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1 216
Q:

............ is a purple-coloured solid halogen.

 

A) Bromine B) Fluorine
C) Chlorine D) Iodine
 
Answer & Explanation Answer: D) Iodine

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0 132
Q:

The chemical formula of Ammonium phosphate is ............

 

A) (NH4)3PO4 B) (NH4)2PO4
C) (NH4)2P02 D) NH4PO4
 
Answer & Explanation Answer: A) (NH4)3PO4

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0 272
Q:

Which among the following has its refractive index closest to that of crown glass?

 

A) Diamond   B) Ruby  
C) Sapphire   D) Canada balsam  
 
Answer & Explanation Answer: D) Canada balsam  

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Exam Prep: AIEEE , Bank Exams

1 110
Q:

Which among the following is a cation?

 

A) Ammonium   B) Iodide  
C) Chloride   D)
 
Answer & Explanation Answer: A) Ammonium  

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1 128
Q:

Which of the following can be used as a catalyst in Hydrogenation reaction?

 

A) Barium B) Iron
C) Tungsten D) Palladium
 
Answer & Explanation Answer: D) Palladium

Explanation:
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