Question

A. Choose the correct option.

1. Copper is a
a. white metal
b. greenish yellow gas
C. colourless gas
d. reddish brown metal

2. A soft metal that can be cut with a knife is
a. gold
b. silver
potassium
d. iron

3. The property of metals due to which they can be drawn into thin wires is
a. malleability
b. ductility
C. sonority
d. good conductors of electricity

Which of the following is a good conductor of heat?
a. Diamond b. Silver
C. Copper
d. All of these

5. The order of reactivity of metals is
a. Cu > Mg> Zn > Fe
b. Cu> Fe> Zn> Mg
C. Mg> Zn> Fe > Cu
d. Mg> Fe > Zn > Cu

6. A metal that will displace copper from copper sulphate solution is
a. mercury
b. gold
c. aluminium d. silver

7. Which of following gases is produced in the reaction of a metal with an acid?
a. Sulphur dioxide b. Carbon dioxide c. Oxygen d. Hydrogen

8 Which of following is the least reactive metal?
b. Potassium C. Copper
d. Silver

9. Which of following metals is used in paints and pigments?
a. Iron
b. Lead
c. Mercury d. Copper

10. Which of following non-metals is used for making matchsticks and fireworks?
b. Silicon
c. Phosphorous
a. Sodium
d. Graphite
a. Gold​

Answer 1

1) Copper is a

a. white metal

b. greenish yellow gas

c. colourless gas

d. reddish brown metal

Ans. Reddish brown metal.

2) A soft metal that can be cut with a knife is

a. gold

b. silver

c. potassium

d. iron

Ans. Gold.

3) The property of metals due to which they can be drawn into thin wires is

a. malleability

b. ductility

c. sonority

d. good conductors of electricity

Ans. ductility.

4) Which of the following is a good conductor of heat?

a. Diamond

b. Silver

c. Copper

d. All of these

Ans. Silver.

5) The order of reactivity of metals is

a. Cu > Mg> Zn > Fe

b. Cu> Fe> Zn> Mg

C. Mg> Zn> Fe > Cu

d. Mg> Fe > Zn > Cu

Ans. Mg>Zn>Fe>Cu.

6) A metal that will displace copper from copper sulphate solution is

a. mercury

b. gold

c. aluminium

d. silver

Ans. Aluminium.

7) Which of following gases is produced in the reaction of a metal with an acid?

a. Sulphur dioxide

b. Carbon dioxide

c. Oxygen

d. Hydrogen

Ans. Hydrogen.

8) Which of following is the least reactive metal?

a. Platinum

b. Potassium

c. Copper

d. Silver

Ans. Platinum. (If there is any other element name instead of Platinum then the correct one is Silver.)

9) Which of following metals is used in paints and pigments?

a. Iron

b. Lead

c. Mercury

d. Copper

Ans. Lead.

10) Which of following non-metals is used for making matchsticks and fireworks?

a. Gold

b. Silicon

c. Phosphorous

d. Graphite

Ans. Phosphorus.

Answer 2

⚕️ ANSWERS⚕️

1)Copper is a reddish brown metal.

2) A soft metal that can be cut with a knife is Gold.

3)The property of metals due to which they can be drawn into thin wires is ductility.

4)a good conductor of heat is Silver.

5) The order of reactivity of metals is Mg> Zn> Fe > Cu.

6) A metal that will displace copper from copper sulphate solution is Aluminium.

7) Hydrogen gases is produced in the reaction of a metal with an acid.

8) Gold is least reactive metal.

9)Lead used in paints and pigments.

10)Phosphorus is used for making matchstick and fireworks.