Question # 1

General formula of Alkane is.

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C₁₀H_2n-2

C₆H₂₆

C₁₁H_2n-2

C_nH_2n-2

Concentration of the copper ore is carried out by:

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Calcinations

Roasting

Forth flotation

Distillation

Dilute acids react with carbonates to produce the given products except.

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Salt

Water

Hydrogen

Carbon dioxide

The water which produces good lather with soap is called:

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soft water

hard water

heavy water

typical water

Such reationsin which reactants and products are sufficient in quantities the Kc value of equilibrium state will be

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Very small

Very large

Moderate

None of these

Acid occurring in sour milk

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Citric acid

Lactic acid

Bytyric acid

Malic acid

Which is the natural sugar found in starchy food.

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Pentose

Dextrose

Hexose

All of them

Which part of digestive system glucose absorb.

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Stomach

Liver

Small intestine

Large intestine.

Which one of the followoing is the Hardest coal.

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Peat

Lignite

Bituminous

Anthracite

Which one of the following is manufactured by Solvar's process:

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caustic soda

washing soda

urea

sulphuric acid

The formula of ozone is.

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O₂

O₃

O

CO

At equilibrium state, when reaction cases to proceed, it is called:

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equilibrium constant

dynamic equilibrium

static equilibrium

simple equilibrium

Which gas like a glass wall of g green house:

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CO

O2

CO2

N2

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