Nitric acid is manufactured by: MCQ with Answer and Explanation

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Nitric acid is manufactured by:

A. Bayer process

B. Haber process

C. Contact process

D. Ostwald process

Answer: Option D

Solution (By JKSSB Mock Tests)

Ostwald process: ammonia is oxidized with air over Pt-Rh catalyst to NO, then NO₂, then absorbed in water to give HNO₃. Haber for NH₃, Contact for H₂SO₄, Bayer for alumina from bauxite.

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Practice More chemistry Questions

Question #1

The horizontal rows in the periodic table are called:

A. Periods

B. Groups

C. Families

D. Blocks

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Correct Answer: Option A

Explanation:
Periods are horizontal rows (7 periods). Groups are vertical columns (18). Elements in same period have same number of electron shells.

This question belongs to: Science chemistry

Question #2

The common name of sodium hydroxide is:

A. Caustic soda

B. Baking soda

C. Soda ash

D. Washing soda

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Correct Answer: Option A

Explanation:
NaOH is caustic soda. Washing soda is Na₂CO₃·10H₂O; baking soda NaHCO₃; soda ash anhydrous Na₂CO₃.

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Question #3

Which plastic is used for making non-stick cookware?

A. Bakelite

B. Teflon

C. Polythene

D. PVC

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Correct Answer: Option B

Explanation:
Teflon (Polytetrafluoroethylene or PTFE) is used as a non-stick coating for cookware because of its extreme chemical inertness, high heat resistance, and low friction coefficient. Polythene and PVC melt at lower temperatures, and Bakelite is a thermosetting plastic used for electrical switches.

This question belongs to: Science chemistry

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