Question # 1

When CO₂ is passed through the ammonical brine the only salt that precipitates is:

Choose an answer

NaHCO₃

NH₄HCO₃

Na₂CO₃

(NH₄)₂CO₃

The residual oil is heated above 400 c to produce.

Choose an answer

Lubricants

Paraffin wax

Asphalt

All

Froth flotation process is used to concentrate the ore on:

Choose an answer

Density basis

Concentration basis

Wetting basis

Magnetic basis

Chemical formula of copper glance is:

Choose an answer

Cu2O

Cu2S

CuFeS2

CuSO4

The elements that do not conduct heat and electricity are called.

Choose an answer

Metallurgy

Non metal

Metalloid

Alloy

Metallurgy involves which of the following steps?

Choose an answer

Mining and enrichment

Reduction

Refining and casting.

All of these

Which one of the not metal.

Choose an answer

Copper

Carbon

chromium

Iron

The process of removal of gangue form the ore is technically known as:

Choose an answer

concentration

purification process

metallurgy

refining

Which one of the following is not faction of crude oil.

Choose an answer

Paraffin wax

Asphalt

Fuel oil

Petroleum coke

Chalco-Pyrite is an ore of:

Choose an answer

Copper

Silver

Iron

Aluminium

Which one of the following is not a fraction of petroleum?

Choose an answer

Kerosene oil

Diesel oil

Alcohol

Petrol

Imperial chemical industries was established in.

Choose an answer

1942

1944

1950

1990

Blonde hair contains compound of.

Choose an answer

Iron

Copper

titanium

Molybdenum

More Classes

Other Links

Chemistry 10th Class English Medium Unit 16 Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer