Deficiency of what vitamins will cause the following diseases: �

Subject

Chemistry

Class

ICSE Class 12

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Sample Papers

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 Multiple Choice QuestionsShort Answer Type

31.

Give reactions and the conditions required for preparation of the following compounds:

(i) XeF6

(ii) XeOF4

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32.

Carry out the following conversions:  

(i) Methyl chloride to acetic acid.

(ii) Benzene to benzoic acid

(iii) Ethanol to acetone.

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33.

Deficiency of what vitamins will cause the following diseases:    

(i) Night blindness.

(ii) Scurvy   


(i) Vitamin ‘A’

(ii) Vitamin ‘C’

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34.

Give balanced equations for the following:   

(i) Glycerol is heated with oxalic acid at 110° C (383K).

(ii) Acetamide is heated with sodium hydroxide.

(iii) Acetone reacts with hydrogen in the presence of heated copper.

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35. Identify A to F :  


straight A space rightwards arrow with LiAlH subscript 4 on top space straight C subscript 2 straight H subscript 5 OH space rightwards arrow with PBr subscript 3 on top space straight B space rightwards arrow with KCN on top space straight C rightwards arrow with straight D on top space straight C subscript 3 straight H subscript 7 NH subscript 2 rightwards arrow with HNO subscript 2 on top space straight E rightwards arrow from straight K subscript 2 Cr subscript 2 straight O subscript 7 divided by straight H to the power of plus to left square bracket straight O right square bracket of space straight F
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36.

Give one good chemical test to distinguish between the following pairs of organic compounds:

(i) Benzaldehyde and acetone.

(ii) Methylamine and dimethylamine.

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37.

Draw the isomers of 2-hydroxy propionic acid. 

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38.

Give an example (equation) for each of the following name reactions:    

(i) Aldol condensation.

(ii) Reimer-Tiemann reaction.

(iii) Rosenmund’s reductions.

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39.

An organic compound A has the molecular formula of C7H6O. When A is treated with NaOH followed by acid hydrolysis, it gives two products, B and C. When B is oxidised, it given A, When A and C are each treated separately with PC15, they give two different organic products D and E.

(i) Identify A to E.

(ii) Give the chemical reaction A is treated with NaOH and name the reaction.

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40.

Draw a pair of isomers for each of the following and name the type of isomerism:  

(i) C4H10

(ii) C2H2C12

(iii) CH3COCH3

(iv) C4H10O

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