Q1. Metals are generally found in nature in which state?
a) Free state
b) Solid state
c) Liquid state
d) Gaseous state
Q2. Which of the following is the best conductor of electricity?
a) Wood
b) Copper
c) Plastic
d) Glass
Q3. Which gas is essential for respiration in living beings?
a) Carbon dioxide
b) Oxygen
c) Nitrogen
d) Hydrogen
Q4. Which property is shown by metals but not by non-metals?
a) Brittle
b) Ductile
c) Poor conductor
d) Non-lustrous
Q5. Which of these is a metalloid?
a) Gold
b) Silicon
c) Nitrogen
d) Aluminium
Q6. Define corrosion. Why is it harmful?
Q7. State two differences between metals and non-metals.
Q8. What conditions are necessary for rusting of iron?
Q9. Write two uses of aluminium. Why is it used in these ways?
Q10. Give one example each of:
(a) Noble metal
(b) Metalloid
(c) Non-metal used in fertilizers
Q11. List any three physical properties of metals. Give examples.
Q12. How can rusting of iron be prevented?
Q13. Why are gold and platinum called noble metals?
33 videos|58 docs|7 tests
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1. What are the main differences between metals and non-metals? | ![]() |
2. Can non-metals conduct electricity? | ![]() |
3. What are some common examples of metals and non-metals? | ![]() |
4. Why are metals considered good conductors of heat and electricity? | ![]() |
5. How do metals and non-metals react with acids? | ![]() |