Metal and Non-Metals UPSC Questions

Chemistry

Metal and Non-Metals MCQ Questions


7.

What is the equation of aluminium forms aluminium oxide ?

A.

4Al + 3O2 → 2Al2O3

B.

4Al + 3H+O2 → 2Al+2O3

C.

4Cu + 3OH → 2Al2O3

D.

Al + 3O2 → 2Al2+O3

😑 View Answer Rough Work Error
ANSWER :

A. 4Al + 3O2 → 2Al2O3

8.
What is the formula of copper oxide ?
A.
CH2
B.
Cu2
C.
CuO
D.
Cl4
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ANSWER :
C. CuO
9.

Whose reactions of Al2O3 + 6HCl → 2AlCl3 + 3H2O ?

A.

Oxide Reacts

B.

Nitrogen Reacts

C.

Carbon Dioxide Reacts

D.

Aluminium Oxide Reacts

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ANSWER :

D. Aluminium Oxide Reacts

10.
__________ are insoluble in water but some of these dissolve in water to form alkalis.
A.
Metal Oxides
B.
Aluminium Oxide
C.
Sulphur Dioxide
D.
Hydrogen Oxide
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ANSWER :
A. Metal Oxides
11.

What type of reaction : Na2O(s) + H2O(l) → 2NaOH(aq)

A.

Overall Reaction

B.

Decomposition Reaction

C.

Synthesis Reaction

D.

No Reaction

😑 View Answer Rough Work Error
ANSWER :

C. Synthesis Reaction

12.
The protective _____________ prevents the metal from further oxidation.
A.
Oxygen Layer
B.
Oxide Layer
C.
Acid Layer
D.
Chlorine Layer
😑 View Answer Rough Work Error
ANSWER :
B. Oxide Layer