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CBSE 12th Standard Chemistry Subject Surface Chemistry HOT Questions 2 Mark Questions With Solution 2021

Published on: 28/05/2021

QB365 Provides the HOT Question Papers for Class 12 Chemistry, and also provide the detail solution for each and every HOT Questions. HOT Questions will help to get more idea about question pattern in every exams and also will help to get more marks in Exams

Download CBSE Class 12th Standard CBSE Chemistry question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Chemistry

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Std: 12th Standard CBSE - Chemistry

chapter: - HOT Questions

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Questions:

Generic 2

3 x 2 = 6

Explain the curdling of milk when it is sour.

Critical temperatures of N₂, CO and CH₄ is 126, 134 and 190 K respectively. Arrange them in increasing order of adsorption on the surface of charcoal. Give reason.

Why is it necessary to remove carbon monoxide when ammonia is obtained by Haber's process?

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Answers Key:

Generic 2

3 x 2 = 6

When milk goes “off” or turns sour, it is because acids produced by bacteria lower the pH of milk so the proteins can clump together. The increased acidity of the milk also causes it to taste sour.

N2<CO<Ch₄

carbon monoxide acts as a poison for the catalyst used in the manufacture of ammonia by Haber's process. Hence. Hence, it is necessary to remove it.