Question of Exercise 6

Aldehydes and Ketones of Class 12

Question
Acetone and acetaldehyde are differentiated by

Answer

Option 1

Option 2

Option 3

Option 4

Frequently Asked Questions

Which of the following is allylic halide

A: (1 - Bromoethyl) benzene

B: Benzyl chloride

C: 1 - Bromo benzene

D: 3 - Chloro cyclohex - 1 - ene

 

Solution:

Explanation:

Considering

Final Answer: 

The correct option is D: 3 - Chloro cyclohex - 1 - ene.

 

 

What is the colour of copper sulphate crystals What happens when it is heated

What happens when it is heated

Solution:

Explanation:-

  • Copper sulfate is blue in colour when it is heated it lost water of crystallization and becomes white.

 Blue white

Final Answer:-

Water of crystallization is lost during heating of copper sulfate and color changes from Blue to White 

 

Rubber is a

A: conducting polymer

B: oriented polymer

C: elastomer

D: strong commercial fabric

 

Solution:

 Explanation:-

  •  Polymers which have elastic properties are called elastomers. 
  • At microscopic level rubber has various disorganized clusters and long molecular flexible chains which provide it elastic property.

 Final Answer:-

 ( C ) rubber is a elastomer 

 

What is a glycosidic linkage

Solution:

Explanation:-

 The covalent bond  which joins  the hemiacetal group of a saccharide  and hydroxyl group of

another molecule(may or may not be saccharide ) is called glycosidic Bond. 

The common atom which joins the two groups  can be oxygen(O), Nitrogen(N) and Sulfur(S) 

so the name of the bond  becomes O-glycosidic Bond and N-glycosidic Bond and S- glycosidic Bond respectively. 

Final Answer:-

 There is the linkage between the hemiacetal group of the saccharide and some other group and this link is called glycosidic linkage.

 

How will you convert aniline to phenol

Solution:

Explanation:-

  • First aniline is converted into diazonium salt by reaction with NaNo2/ HCL

diazonium

  • Then the diazonium salt is treated with water to form phenol.

diazonium

 

Final Answer:-

  • Aniline is converted into phenol by converting first into diazonium salt then this salt is treated with water to form phenol.

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