Sodium hydroxide is manufactured by: MCQ with Answer and Explanation

Question

Share Report Error

Sodium hydroxide is manufactured by:

A. Chlor-alkali process

B. Contact process

C. Haber process

D. Solvay process

Answer: Option A

Solution (By JKSSB Mock Tests)

Chlor-alkali process: electrolysis of concentrated NaCl solution (brine) yields NaOH, Cl₂, and H₂. Solvay process makes Na₂CO₃; Haber for NH₃; Contact for H₂SO₄.

This question belongs to: Science chemistry

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More chemistry Questions

Question #1

Which element is in Group 2, Period 4 of the periodic table?

A. Ca

B. Sr

C. Be

D. Mg

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option A

Explanation:
Calcium (Ca, Z=20) has configuration 2,8,8,2. 4 shells → Period 4; 2 valence electrons → Group 2. Mg is Group 2, Period 3. Sr is Group 2, Period 5. Be is Group 2, Period 2.

This question belongs to: Science chemistry

Question #2

Sodium chloride (table salt) is obtained from seawater by:

A. Evaporation

B. Sublimation

C. Distillation

D. Filtration

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option A

Explanation:
Salt is obtained by evaporation of seawater in shallow ponds. Water evaporates leaving salt behind. Filtration cannot separate dissolved salt. Distillation would give pure water, not salt. Sublimation for sublimable solids.

This question belongs to: Science chemistry

Question #3

Which of the following statements about matter is correct?

A. Gases do not have mass.

B. Matter is always visible to the naked eye.

C. All matter is composed of particles.

D. Matter cannot change its state.

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option C

Explanation:
All matter is composed of tiny particles (atoms, molecules, or ions). This is a fundamental concept. Matter may not always be visible (e.g., air). It can change states (solid, liquid, gas). Gases have mass; for example, a filled gas cylinder weighs more than an empty one. The particulate nature of matter explains diffusion, Brownian motion, etc.

This question belongs to: Science chemistry

Explore All chemistry MCQs