EASY
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

Consider the following substances.
1. Toilet soap   2. Toothpaste
3. Vinegar       4. Baking soda
Which of the substances given above are mixture in nature?

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Important Questions on Chemistry

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 42
Select the correct statement from the codes given below
1. Cut glasses are lead glasses.
2. The main raw material for the preparation of soda glass is Na2CO3 .
3. Quicklime is CaO.
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 43
Why can not hard water be used in boilers?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 44

One of the main causes of air pollution in cities is emissions from vehicles like cars and trucks. Cars emit various pollutants, which are bad for human health when inhaled, like

1. Nitrogen oxide.NOx

2. Carbon monoxide. CO

3. Carbon dioxide. CO2

4. Benzene

Which of the above pollutants are not tolerated by human being even at very low level? 

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 45
Soap is sodium or potassium salt of
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 47
Which of the following substances are harmful for health if present in food items? 
1. Pesticide residues      2. Lead
3. Metanil yellow             4. Mercury
Select the correct answer using the code given below.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 48
Which of the commonly used household item(s) release Bishenol A (BPA) which is an endocrine disrupter and bad for human health? 
1 . Steel utensils
2. Plastic coffee mugs
3. Aluminium utensils
4. Plastic water storage bottles
Select the correct answer using the codes given below.
HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 49
The hair dye available in the market contains two bottles, one containing dye and other containing hydrogen peroxide. The bottles are mixed before applying the dye. The function of hydrogen peroxide is
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 15>Q 50
'Freon' used as refrigerants is chemically known as_____.