Online Test of Chapter 3 Metals and Non-Metals Test 2 Science| Class 10th

1. Which of the following metals forms an amphoteric oxide?
(a) Potassium
(b) Zinc
(c) Calcium
(d) Copper

2. Which of the following statements is incorrect?
(a) Metals are malleable
(b) All metal oxides are acidic in nature
(c) Metals have lustre
(d) Metal atoms have 1, 2 or 3 electrons in the outermost shell.

3. A sulphide ore is concentrated by
(a) washing with water.
(b) magnetic separation.
(c) leaching
(d) froth floatation process.

4. Which of the following metals has the lowest melting point?
(a) Tungsten
(b) Osmium
(c) Mercury
(d) Potassium

5. The process of heating an ore in the presence of excess of air below its melting point is called
(a) Sublimation
(b) Smelting
(c) Calcination
(d) Roasting

6. The metals which can displace hydrogen from water at room temperature appear in the activity series
(a) Below hydrogen
(b) In the middle
(c) At the bottom
(d) Near the top

7. Which of the following metals does not liberate hydrogen from dilute acids?
(a) Copper
(b) Tin
(c) Iron
(d) Aluminium

8. Which of the following is the lightest metal?
(a) Mercury
(b) Silver
(c) Lithium
(d) Lead

9. Which of the following metals is the most abundant in the earth’s crust?
(a) Iron
(b) Sodium
(c) Magnesium
(d) Aluminium.

10. Which of the following metals is found native in nature?
(a) Magnesium
(b) Iron
(c) Copper
(d) Aluminium.