Question # 1

Which one of the ore of copper?

Choose an answer

Copper glance

Chalcopyrite

Both a and b

None of these

Matte is a mixture of:

Choose an answer

FeS and CuS

Cu₂O and FeO

Cu₂S and FeS

CuS and FeO

Chalco-pyite is an ore of:

Choose an answer

iron

aluminium

silver

copper

Froth flotation process is used to concentrate the ore on:

Choose an answer

Density basis

Concentration basis

Wetting basis

Magnetic basis

Formula of soda ash is.

Choose an answer

Na₂CO₃

NaHCO₃

Na₂SO₄

Na₃PO₄

Which one of the not metal.

Choose an answer

Copper

Carbon

chromium

Iron

Blonde hair contains compound of.

Choose an answer

Iron

Copper

titanium

Molybdenum

Urea is nitrogenous fertilizer. It consist of nitrogen.

Choose an answer

26.6 %

36.6%

46.6%

56.6%

A saturated solution of sodium chloride is called.

Choose an answer

Brine

Suspension

Colloidal

None of these

When NaHCO₃is heated if forms:

Choose an answer

CO₂

Ca(OH)₂

CaCO₃

CaO

How many % age of nitrogen in urea fertilizers?

Choose an answer

40.6

45.6

46.6

50

Sodium carbonate is manufactured by.

Choose an answer

Haber's process

Ostwald's process

Solvay's process

All

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

Choose an answer

Paraffin wax

Asphalt

Fuel oil

Petroleum coke

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