Question # 1

Froth flotation process is used to concentrate.

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Copper ore

Iron ore

Chromium ore

Aluminum ore

The process which convert vegetable oil into banaspati ghee called.

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Hydrogenation

Halogenation

a and b

None of these

The % age of drinkable water on earth is

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2.0%

0.02%

0.2%

5.0%

Salt makes the water permanently hard.

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CaSO₄

Ca(HCO₃)₂

NaHCO₃

NaCO₃

According to the Lewis concept acid is a substance which can.

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Donate a proton

Donate a pair of electron

Accept a proton

Accept a pair of electron.

The envelope of different gases around the earth is called.

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Atmosphere

Brosphere

Lithosphere

Hydrosphere

Which acid is found in Ant sting?

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Citric Acid

Formic Acid

Uric Acid

Sulphuric acid

Carbon Tetra chloride is used in .

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Fertilizer

Dry cleaning

Metallurgy

Anesthesia

Which is a hereditary material?

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DNA

RNA

Protein

All of them

Which one is homocyclic compound?

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Benzene

Cyclobutane

Cyclohexane

All

Phenolphthalein produces red colour in

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Acid

Base

Both a and b

None of these

When NaHCO₃is heated if forms:

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CO₂

Ca(OH)₂

CaCO₃

CaO

A disease is caused by excess of bile pigments in the blood is.

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Typhoid

Jaundice

Cholera

Dysentery

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