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CBSE 12th Standard Chemistry Subject Chemistry in Everyday Life HOT Questions 2 Mark Questions 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

5 x 2 = 10

What is Salvarson ? To which class of drugs does it belong ? For what distance is it used?

Distinguish between a narrow spectrum and broad spectrum antibiotic.

When a mixture of salicylic acid, acetic anhydride and acetic acid is refluxed, what is the product obtained and what is its use in everyday life ?

What are antihistamines ? Give two examples. Explain how ddo they act on the human body ?

Why is use of aspartame limited to cold foods and drinks?

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Answers Key:

Generic 2

5 x 2 = 10

Antimicrobial agent. Used for the treatment of STD called Syphilis.

A narrow spectrum antibiotic works against a limited range of microbes whereas a broad spectrum antibiotic works against a large variety of microbes.

Aspirin used as analgesic.

The hypersensitivity of some persons towards certain drugs (penicillin, sulpha drugs), dust, pollen grains, cat fur, a particular food or fabric, etc. is called allergy. Allergy is caused by release of a substance called histamine in the body Antihistamines are drugs which either reduce or inhibit the action of histamine in the body thereby preventing allergy. Two important antihistamine or anti-allergic drugs are brompheniramine and terfenadine. .
Mode of action. Histamines interact with the binding sites of receptor in the body to produce allergy. Antihistamines compete with histamines for these binding sites of receptor and thus do not allow histamine to produce allergy. Thus, antihistamines are drugs which interfere with the natural action of histamine by competing for histamine binding sites of receptor.

It decomposes at baking or cooking temperatures and hence can be used only in cold foods and drinks.