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Chemistry

Chemistry
When formaldehyde and potassium hydroxide are heated, we get

Methane
Acetylene
Ethyl formate
Methyl alcohol

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Chemistry
One of the following is used to dissolve noble metals. That is

Hydrochloric acid
Aqua ragia
Nitric acid
Sulphuric acid

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Chemistry
Which of the following is not a nitrogenous fertilizer ?

CaCN2
Ca(CN)2
Urea
NH4NO3

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Chemistry
The most suitable vessel for storing concentrated sulphuric acid is

Earthen vessel
Glass vessel
Copper vessel
Aluminium vessel

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Chemistry
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of

p-electrons in Ne(Z = 10)
d-electrons in Fe(Z = 26)
p-electrons in CI(Z = 17)
s-electrons in Mg(Z = 12)

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Chemistry
KMnO4 can be used as a/an

Pesticide
Fertiliser
Insecticide
Disinfectant

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