Metal And Its Compounds - Study Mode

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[#211] The chemical formula of sodium sulphate is:

(A) NaSO 4

(B) Na 2 SO 4

(C) NaSO 3

(D) Na(SO 4 ) 2

Correct Answer

(B) Na 2 SO 4

[#212] These days yellow lamps are frequently used as street light. Which one of the following is used in these lamps?

(A) Sodium

(B) Neon

(C) Hydrogen

(D) Nitrogen

Correct Answer

(A) Sodium

[#213] Solder is an alloy of

(A) tin and lead

(B) tin and copper

(C) tin, copper and zinc

(D) tin, lead and zinc

Correct Answer

(A) tin and lead

[#214] Monazite is an ore of

(A) Zirconium

(B) Thorium

(C) Titanium

(D) Iron

Correct Answer

(B) Thorium

[#215] A substance acquired in the form of brownish film on a piece of iron left in the open for some time is

(A) rust

(B) salt

(C) soil

(D) dust

Correct Answer

(A) rust