Question # 1

the chemical formula of chalcopyrite is:

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Cu₂S

CuFe₂S

CuS

FeS

Blonde hair contains compounds of:

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molybdenum

iron

titanium

copper

Chemical formula of matte will:

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Cu2S.FeS

Cu2S

Cu2O

FeS

Formula of baking soda is.

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Na₂CO₃

NaHCO₃

Na₂SO₄

Na₂PO₄

The nitrogen present in urea is used by plants to synthesize.

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Sugar

Proteins

Fats

DNA

Concentration of the copper ore is carried out by:

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Calcinations

Roasting

Forth flotation

Distillation

Composition of carbon in kerosene oil is.

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C₁₀-C₁₂

C₁₂-C₁₂

C₁₆-C₁₈

C₃₀-C₃₀

Imperial chemical industries was established in.

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1942

1944

1950

1990

Concentration is a .

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Mixing technique

Separating technique

Boiling technique

cooling technique

On which bases froth floatation process take place?

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Density bases

Concentration basis

Watting basis

None of these

Blast furnace usually used for the metallurgy of.

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Iron

Copper

Aluminum

Both a and b

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

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Paraffin wax

Asphalt

Fuel oil

Petroleum coke

Chemical formula of copper glance is:

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Cu2O

Cu2S

CuFeS2

CuSO4

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

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