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🏫 Board🧪 Chemistry

Metals & Nonmetals

12 Board Chemistry previous year questions on Metals & Nonmetals — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.

Q1 FREE PREVIEW

Compounds formed by transfer of electrons are called

a

Organic

b

Covalent

c

Electrovalent

d

None of these

✓ Correct answer: c)

Electrovalent

Explanation

Compounds formed by the transfer of electrons are called ionic compounds.

Correct answer: C) Ionic compounds

Explanation:

  • In these compounds, one atom loses electrons and another atom gains electrons, creating an electrostatic attraction between them.

  • Examples: NaCl, KBr

Q2

The substances, present as impurities in on ore, are called

a

Slag

b

Gangue

c

Mineral

d

None of these

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Q3

Which metal is mixed with gold to make an alloy?

a

Fe

b

Cu

c

Zn

d

Ag

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Q4

Which of the following compounds would be the most basic?

a

\({\mathrm{Na}}_{2}\mathrm{O}\)

b

\({\mathrm{SO}}_{2}\)

c

\({\mathrm{NO}}_{2}\)

d

\({\mathrm{Al}}_{2}{\mathrm{O}}_{3}\)

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Q5

Which of the following metals can be easily cut with a knife ?

a

Na

b

Cu

c

Ni

d

Al

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Q6

Which of the following is best conductor of electricity?

a

Iron

b

Aluminium

c

Copper

d

Silver

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Q7

Which of the following is kept immersed in water?

a

White phosphorus

b

Red phosphorus

c

lodine

d

Sulphur

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Q8

which of the following is an amphoteric oxide

a

CuO

b

FeO

c

\(A{l}_{2}{O}_{3}\)

d

CaO

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Q9

Silicon is a/an

a

Non-metal

b

Metal

c

Alloy

d

Metalloid

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Q10

Which of the following is the best conductor of electricity?

a

Iron

b

Aluminium

c

Copper

d

Silver

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Q11

Multiple Choice Questions:-

On the basis of the activity series, which element is less reactive than Cu?

[PYQ 2021]

a

Na

b

Ca

c

Au

d

Zn

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Q12

The process of black coating on silver in environment is-

a

Reduction

b

Corrosion

c

Rancidity

d

Double displacement

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