QuestionKart - Questions

cds- Question :

Statement 1: During the setting of cement the structure has to be cooled by spraying water.
Statement 2: The constituents of cement undergo hydration during setting of cement and it is an exothermic reaction

A :

Both the statement are individually true and statement 2 is the correct explanation of statement 1

B :

Both the statements are individually true but the statement 2 is not the correct explanation of statement 1

C :

statement 1 is true but its statement second is false

D :

the statement one is false but statement second is true

cds- Question :

Which one of the following reducing agents can also act’ as an oxidizing agent?

A :

B :

C :

D :

cds- Question :

Which one among the following has been producing/ can produce light by chemical change?

A :

Sun

B :

moon

C :

Electic blub

D :

Lighting & thunder

cds- Question :

A woman desires to clean the surface of her gold ornaments by a chemical approach. For this she requires to use

A :

Aqua regia

B :

C :

Concentrated NaOH

D :

Sodium thiosulphate solution

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