MEDIUM
10th ICSE
IMPORTANT
Earn 100

Give reason for the following:

Copper does not liberate hydrogen on heating with dil.H2SO4.

Important Questions on Metals and Non-metals

MEDIUM
10th ICSE
IMPORTANT

Give reason: Nonmetals, in general, do not displace hydrogen from dilute acids.

 

MEDIUM
10th ICSE
IMPORTANT
A copper plate was dipped into a solution of AgNO3. After some time, a black layer was deposited on the copper plate. State the reason for ti. Write the chemical equation for the reaction involved.
MEDIUM
10th ICSE
IMPORTANT
Why is sodium chloride is soluble in water but not soluble in kerosene?
MEDIUM
10th ICSE
IMPORTANT

A, B, and C are three elements that undergo chemical reactions according to the following equations:

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Which element is the most reactive?

MEDIUM
10th ICSE
IMPORTANT

A, B, and C are three elements that undergo chemical reactions according to the following equations:

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Which element is the least reactive?

MEDIUM
10th ICSE
IMPORTANT

A, B, and C are three elements that undergo chemical reactions according to the following equations:

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What is the type of reactions listed above?

EASY
10th ICSE
IMPORTANT
Write the chemical equation for the reaction taking place when zinc carbonate is heated.
EASY
10th ICSE
IMPORTANT
Write the chemical equation for the reaction taking place when cinnabar is heated in air.