Subject

Chemistry

Class

CBSE Class 12

Pre Boards

Practice to excel and get familiar with the paper pattern and the type of questions. Check you answers with answer keys provided.

Sample Papers

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 Multiple Choice QuestionsShort Answer Type

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31.

Name the reagents used in the following reactions ? 




Name of the reagent: Sodium borohydride (NaBH4). It is a good reducing agent useful in the reduction of aldehyde and ketone to alcohol.

 

Name of the reagent: Alkaline potassium permanganate (KMnO4-KOH). Potassium permanganate is a strong oxidising agent.

 

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32.

 Write the names and structures of the monomers of the following polymers

(i) Nylon-6, 6

(ii) PHBV

(iii) Neoprene

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33.

Predict the products of the following reactions :

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34.

How do you convert the following?

Phenol to anisole

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35.

How do you convert the following?

Propan-2-ol to 2-methylpropan-2-ol

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36.

How do you convert the following?

Aniline to Phenol

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37.

Write the mechanism of the following reaction: 2CH3-CH2-OH -->  CH3-CH2-O-CH2-CH3?

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38.

Write the equation involved in the acetylation of Salicylic acid.

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39.

Which one of the following is a disaccharide: Starch, Maltose, Fructose, Glucose ?

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40.

What is the difference between fibrous protein and globular protein?

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