Explore topic-wise MCQs in Chemistry.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following metals cannot be extracted via hydrometallurgy?

A. Copper
B. Zinc
C. Iron
D. Gold
Answer» D. Gold
Discussion
2.

Which of the following processes involves the dissolution of the ore in a suitable reagent followed by precipitation of the metal by a more reactive metal?

A. Froth floatation
B. Casting
C. Smelting
D. Hydrometallurgy
Answer» B. Casting
Discussion
3.

Which of the following is used to reduce the metal complexes obtained during leaching process?

A. Tellurium
B. Antimony
C. Zinc
D. Selenium
Answer» D. Selenium
Discussion
4.

What is the process used to recover the metal from its soluble complex obtained after leaching?

A. Oxidation
B. Reduction
C. Crystallization
D. It cannot be obtained
Answer» C. Crystallization
Discussion
5.

Which of the following is a complex formed during the extraction of silver via leaching?

A. AgCN
B. [Ag(CN)<sub>2</sub>]<sup> </sup>
C. [Ag(CN)<sub>3</sub>]<sup>-2</sup>
D. [Ag(CN)<sub>4</sub>]<sup>-3</sup>
Answer» C. [Ag(CN)<sub>3</sub>]<sup>-2</sup>
Discussion
6.

Which of the following is a product formed during the electrolysis of brine?

A. NaCl
B. NaOH
C. H<sub>2</sub>O
D. Na<sub>2</sub>O
Answer» C. H<sub>2</sub>O
Discussion
7.

Leaching process is an oxidation reaction.

A. True
B. False
Answer» B. False
Discussion
8.

What is the voltage at which electrolysis of brine takes place?

A. &lt; 2.2 V
B. &gt; 2.2 V
C. 2.2 V
D. Brine cannot be electrolysed
Answer» C. 2.2 V
Discussion
9.

Which of the following is chlorine isolated from by oxidation?

A. The atmosphere
B. Brine
C. Sylvite
D. Bischofite
Answer» C. Sylvite
Discussion
10.

Non-metals are extracted by oxidation.

A. True
B. False
Answer» B. False
Discussion