Metals and Non-Metals Worksheet-5

Metals and Non-Metals Worksheet-5

1. Identify the alloy of Aluminium which is also known as magnetic steel:

(a) Duralumin                               (b) Alnico

(c) Brass                                         (d) German Silver

2. Amalgams are mixture of metals in mercury (liquid metal). For filling the teeth cavities which of the following metal amalgams may be used?

(a) Gold                                          (b) Aluminium

(c) Scandium                                 (d) Sodium

3. If silver is the best conductor of electricity among the metals, which is the second best conductor of electricity?

(a) Gold              (b) Copper         (c) Platinum     (d) Iron

4. Graphite which is non metal is used as a moderator in the nuclear reactor. Which of the following metals can also be used as a moderator in nuclear reactors?

(a) Zinc              (b) Cadmium    (c) Mercury       (d) Scandium

5. Which of the following negative radical is present in bleaching powder?

(a) Hypochlorite

(b) Chlorate

(c) Chloride

(d) Both Hypochlorite and Chlorate

6. Which of the following compositions can be used as a fertilizer?

(a) CaCN₂ + C  (b) CaC₂ + C     (c) Ca₃N₂ + C    (d) AIN + C

7. Which of the following properties of diamond is not attributed to its rigid giant polymeric tetrahedral structure?

(a) Good thermal conductivity

(b) Good abrasive nature

(c) Poor electrical conductivity

(d) Both Good thermal conductivity and Good abrasive nature

8. Graphite,an allotrope of carbon is used as a refractory material in an electric furnace because:

(a) Of its high melting point

(b) It has a layered structure

(c) Both Of its high melting point and It has a layered structure

(d) It it’s lustrous

9. Antimony and arsenic belong to the category of:

(a) Metals                   (b) Metalloids   (c) Nonmetals  (d) Minerals

10. Metals generally have _____ number of electrons in their valence shell.

(a) 1, 2 or 3                                    (b) 7, 8 or 9

(c) 10, 11 or 12                               (d) 20, 30 or 40

11. Nonmetals contain ____ number of electrons in their outermost shell.

(a) 1, 2 or 3                                    (b) 8, 9 or 10

(c) 10, 20 or 30                             (d) 5, 6 or 7

12. Nonmetals form:

(a) cations                                      (b) anions

(c) anions and cations                 (d) do not form ions

13. To become stable, metals:

(a) lose or gain electrons            (b) neither lose nor gain electrons

(c) lose electrons                          (d) gain electrons

14. Metals tends to form: -

(a) cations                                      (b) anions

(c) cations and anions                 (d) do not form ions

15. Antimony and arsenic belong to the category of:

(a) metals          (b) metalloids   (c) nonmetals   (d) minerals

Answer Key:

(1)-(b); (2)-(a); (3)-(b); (4)-(b); (5)-(d); (6)-(a); (7)-(c); (8)-(a); (9)-(b); (10)-(a); (11)-(d); (12)-(d); (13)-(c); (14)-(a); (15)-(b)