16. The metals that produce ringing sounds, are said to be-
a) Malleable b) sonorous c) Lustrous d) hard
17. Which metal is found in liquid state at room temperature?
a) Fe b) Zn c) Hg d) Al
18. Which non-metal is essential for our life and inhale during breathing?
a) H b) O c) C d) N
19. Which one of the following is applied on wounds as an antiseptic?
a) Metals b) Non-metals
c) Metalloids d) All of these
20. Which metal is found in plants?
a) Fe b) Cr c) Mg d) CO
21. Gold is used in-
a) Thermometers b) Fuel
c) Jewellery d) Machinery
22. Which substance is present in fuel?
a) Copper b) Iron c) Gold d) Carbon
23. Aluminium foil used for wrapping-
a) Food b) Clothes c) Plastic d) Wires
24. Which one of the following is used for decorating sweets?
a) Aluminium foil b) Copper foil
c) Silver foil d) All of these
25. Which one of the following enhances the growth of plants?
a) Industrial gadgets b) Fertilisers
c) Automobiles d) Water boilers
26. Galvanisation is a method of protecting iron from rusting by coating with a thin layer of
a) Gallium b) Aluminium c) Zinc d) Silver
27. Amalgam is an alloy of
a) Copper and Tin b) Mercury
c) Lead and Tin d) Copper and Zinc
28. Which of the following metals exist in their native state in nature?
a) Copper b) Gold c) Zinc d) Silver
29. Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?
a) Diamond b) Graphite
c) Sulphur d) Fullerene
30. Gold is mixed with copper to
a) Makes gold soft b) make gold hard
c) Make gold more yellowish d) give gold lustre.
Answers
Answer:
16. The metals that produce ringing sounds, are said to be-
a) Malleable b) sonorous c) Lustrous d) hard
17. Which metal is found in liquid state at room temperature?
a) Fe b) Zn c) Hg d) Al
18. Which non-metal is essential for our life and inhale during breathing?
a) H b) O c) C d) N
19. Which one of the following is applied on wounds as an antiseptic?
a) Metals b) Non-metals
c) Metalloids d) All of these
20. Which metal is found in plants?
a) Fe b) Cr c) Mg d) CO
21. Gold is used in-
a) Thermometers b) Fuel
c) Jewellery d) Machinery
22. Which substance is present in fuel?
a) Copper b) Iron c) Gold d) Carbon
23. Aluminium foil used for wrapping-
a) Food b) Clothes c) Plastic d) Wires
24. Which one of the following is used for decorating sweets?
a) Aluminium foil b) Copper foil
c) Silver foil d) All of these
25. Which one of the following enhances the growth of plants?
a) Industrial gadgets b) Fertilisers
c) Automobiles d) Water boilers
26. Galvanisation is a method of protecting iron from rusting by coating with a thin layer of
a) Gallium b) Aluminium c) Zinc d) Silver
27. Amalgam is an alloy of
a) Copper and Tin b) Mercury
c) Lead and Tin d) Copper and Zinc
28. Which of the following metals exist in their native state in nature?
a) Copper b) Gold c) Zinc d) Silver
29. Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?
a) Diamond b) Graphite
c) Sulphur d) Fullerene
30. Gold is mixed with copper to
a) Makes gold soft b) make gold hard
c) Make gold more yellowish d)
Answer:
16.b
17.c
18.b
19.
20.
21.c
22.d
23.a
24.c
25.b
26.c
27.
28.
29.b
30.b