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Gun cotton is used as a propellant or low-order explosive. Chemically, the gun cotton is

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Important Questions on Chemistry

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 56
Consider the following statements
1. Photochromic lenses are lenses that darken on exposure to ultraviolet light.
2. Photochromic properties is due to embedded microcrystalline of silver chloride in the glass.
Which of the statement(s) given above is/are correct?
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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 57
Consider the following statements
1. Pyrex glasses have boron oxide as main constituent besides silica.
2. Pyrex glasses have high thermal expansion, thus less vulnerable to cracking from thermal shock.
3. They are commonly used for reagent bottles, optical component and household cookware.
Which of the statement(s) given above is/are correct?
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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 58
Many communities put salt on their roads after a snow fall, why?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 59
Which one of the following is the reason for keeping the chloroform in brown-tinted glass containers?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 60
Antacids are commonly used to get rid of acidity in the stomach. A commonly used antacid is _____.
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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 61
Heavy water is not used for drinking because:
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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 62
Match the species in List I with their types in List II.
     List I            List II
A. DDT         1. Photochemical smog
B. NaCIO3    2. Disinfectant
C. Cl2              3. Herbicides
D. PAN          4. Pesticides
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 63
Quality diesel is measured in terms of its _____.