EASY
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

In electro-refining of copper, some gold is deposited as

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Important Questions on Chemistry

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 67
The hardest naturally occurring substance is
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 68
By annealing, steel
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 69

Match List I with List II.
     List I                     List II

A. Blue vitriol        1. Sodium bicarbonate

B. Epsom salt       2. Sodium hydroxide

C. Baking soda     3. Magnesium sulphate

D. Caustic soda    4. Copper sulphate

EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 70

Consider the following statements

1. Pig iron is obtained from the bottom of blast furnace in the metallurgy of iron.

2. Pig iron contains approximately 4.3% carbon.

Which of the statements given above is/are correct?

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 71
German silver is an alloy of
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 73
Salts of which of the following elements provide colours to fireworks?
HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 74

Consider the following statements:

1. Liquid sodium is employed as a coolant in nuclear reactors.

2. Calcium carbonate is an ingredient in toothpaste.

3. Bordeaux's mixture consists of sodium sulfate and lime.

4. Zinc amalgams are used as a dental filling.

Which of the statements given above is correct?

HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 75

Consider the following statements

1. Vanadium is a toxic very hard silverywhite metallic element.

2. Thorium is a dark grey radioactive metallic element of the actinide series.

Which of the statement(s) given above is/are correct?