Metal And Its Compounds - Study Mode

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[#91] Bauxite is an ore of which of the following metals?

(A) Iron

(B) Copper

(C) Aluminium

(D) Silver

Correct Answer

(C) Aluminium

[#92] Gypsum contains . . . . . . . . . molecules of water in the form of crystalline water.

(A) two

(B) five

(C) three

(D) four

Correct Answer

(A) two

[#93] The formula of Calcium hydroxide is . . . . . . . .

(A) Ca 2 OH

(B) Ca(OH) 3

(C) Ca(OH) 2

(D) CaOH

Correct Answer

(C) Ca(OH) 2

[#94] In order to achieve higher temperatures, electric heating devices usually use . . . . . . . .

(A) Metalloid

(B) Alloy

(C) Non-metal

(D) Metal

Correct Answer

(B) Alloy

[#95] What is the chemical formula for Sodium Chloride (Salt)?

(A) NaCl 2

(B) NaCl

(C) Na 2 Cl

(D) Na 2 C

Correct Answer

(B) NaCl