Graphite is corroded by

Find out which quotation parts of the following sentences has an error. In recent 'years', automobile emissions 'have disfigured' stone 'carvings', corroded bronze monuments, and 'soil' ancient buildings.

A

years

B

have disfigured

C

carving

D

soil

Rubber lined vessels are corroded by the action of

A

Aqua regia

B

Chloroform

C

Sulphuric acid (95%)

D

All of the above

Silver gets corroded due to ________ in air.

A

Oxygen

B

Hydrogen Sulphide

C

Carbon dioxide

D

Nitrogen

Gunmetal and bronze are not corroded by the action of

A

Wet chlorine

B

Synthetic detergent solution

C

Hydrochloric acid (10%)

D

Nitric acid (

Polythene (low or high density) containers are not corroded by

A

Sulphuric acid (10%) at room temperature

B

Nitric acid (95%) at room temperature

C

Sulphur trioxide at 60°C

D

Any of these

Glass is corroded by

A

Fluorine (dry or wet)

B

Sulphuric acid

C

Phosphoric acid

D

None of these

Stainless steel is not corroded by

A

Hydrochloric acid (10%)

B

Nitric acid (10%)

C

Sulphuric acid (10%)

D

Saturated brine

Platinum and silver are corroded by

A

Caustic soda solution

B

Phosphoric acid

C

Sulphuric acid (10%)

D

None of these

Telfon (PTFE) is corroded by

A

Hydrochloric acid (10%)

B

Hydrochloric acid (95%)

C

Sulphuric acid

D

None of these

Tin vessels are corroded by

A

Anhydrous ammonia

B

Aromatic solvents

C

Synthetic detergent solution

D

None of these

Graphite is corroded by

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