Question

All existing matter in our surroundings is made up of basic unit known as elements Elements are classified into two category Le, metal can non-metal, All metalsare electrical conductors Many of them have a high density and they are usually ductile and malleable. All these properties influence the way the metals are used. Some metals are sonorous and so they are used for special purposes

18. Sonorous' means:
(a) unique property of non-metals
(b) induce conductivity
(c) having high density
(d) causing sound

19. Materials that conduct electricity arecalled:
(a) metal
(b) bad conductors
(c) insulators
(d) non-metal

20. Which metal shows ductility?
(a) Zinc
(b) Lithium
(c) Magnesium​

Answer 1

18. Sonorous means causing sound.

19. Materials that conduct electricity are called conductors. (Ans - Metal)

20. Zinc shows ductility when heated

Answer 2

Answer:

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