HARD
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

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?

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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 10>Q 76

Assertion (A) Froth-floatation process is used to concentrate sulphide ores.

Reason (R) There is difference in the wettability of different minerals.

HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 78
Hard steel contains ?
HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 79
Why do alkali metals impart colour to the flame?
HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 80
Which can be reduced to metal on heating in a stream of hydrogen?
HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 81

Study the following statements

1. Cadmium is used in atomic reactors.

2. Cinnabar is an ore of mercury (Hg).

3. Mercury is transported in metal containers made of iron.

4. Dolomite contains both calcium and magnesium.

Which of the above are true?

HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 82
Which of the following alkaline earth metal is used in manufacture of aeroplane parts?
HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 83

Match List I with List II.
    List I                           List II

A. German silver        1. Tin

B. Solder                    2. Nickel

C. Bleaching powder  3. Sodium

D. Hypo                      4. Chlorine

HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 84

Consider the following statements

1. Copper pyrites (CuFeS2) are concentrated by froth-floatation method.

2. Iron ore is concentrated by magnetic treatment.

3. The oil used in the froth floatation method for the purification of ores is pine oil.

Which of the above is/are correct?