Question

10 SUUns
A. Choose the correct option.
1. Copper is a
a. white metal
C. colourless gas
b. greenish-yellow gas
2.
A soft metal that can be cut with a knife is
d. reddish brown metal
a. gold
b. silver
3.
C. potassium d. iron
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
4. 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?
a. Sodium
b. Silicon
C. Phosphorous d. Graphite
a. Gold​

Answer 1

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Answer 2

Answer:

i don't know what is the answer