Chemistry questions and answers For UPSC | SSC | Rail | RRB | State PSC | neet P14

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Page 14

90169131. Which is the purest form of iron?

A

Steel

B

Cast iron

C

Pig iron

D

Wrought iron

D

Correct Answer: D. Wrought iron

90123132. The major gaseous pollutant of the thermal power station is

A

H₂S

B

NH₃

C

NO₂

D

SO₂

D

Correct Answer: D. SO₂

90146133. Two elements that can form a large number of compounds are

A

Carbon and Hydrogen

B

Carbon and Nitrogen

C

Carbon and Oxygen

D

Carbon and Sulphur

A

Correct Answer: A. Carbon and Hydrogen

90153134. Wax used for making candles is chemically a mixture of

A

aliphatic hydrocarbons

B

aromatic hydrocarbons

C

cyclic hydrocarbons

D

aliphatic and aromatic hydrocarbons

A

Correct Answer: A. aliphatic hydrocarbons

90197135. Which one of the following metals pollutes the air of a city having the large number of automobiles?

A

Cadmium

B

Chromium

C

Lead

D

Copper

C

Correct Answer: C. Lead

90057136. If all bullets could not be removed from gunshot injury of a man, it may cause poisoning by

A

Mercury

B

Lead

C

Iron

D

Arsenic

B

Correct Answer: B. Lead

90097137. The acid used in lead storage cells is

A

phosphoric acid

B

hydrochloric acid

C

nitric acid

D

sulphuric acid

D

Correct Answer: D. sulphuric acid

90096138. Tetra ethyle lead (TEL) is

A

a catalyst in burning fossil fuel

B

an antioxidant

C

a reductant

D

an antiknock compound

D

Correct Answer: D. an antiknock compound

90156139. What is the chemical name for 'baking soda'?

A

Sodium carbonate

B

Sodium bicarbonate

C

Sodium nitrite

D

Sodium nitrate

B

Correct Answer: B. Sodium bicarbonate

90193140. Which one of the following Is found in kidney stones?

A

Sodium oxalate

B

Calcium oxalate

C

Sodium chloride

D

Calcium acetate

B

Correct Answer: B. Calcium oxalate

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