Question # 1

Causticisation process is used for the preparation of

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Caustic soda

Caustic potash

Baryata solution

Slaked lime

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

The formula of nitre is

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KNO₃

NaNO₃

NaCI

Na₂CO₃

Water (H2O) is liquid while hydrogen sulphide (H₂S) is a gas because

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Water has higher molecular weight

Hydrogen sulphide is a weak acid

Sulphur has high electronegativity than oxygen

Water molecules associate through hydrogen bonding.

Fluorine does not show positive oxidation states due to the absence of

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d-orbitals

s-orbitals

p-orbitals

None

Which inorganic precipitate acts as semipermeable membrane?

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Calcium sulphate

Barium oxalate

Nickel phosphate

Copper ferrocyanide

Which of the following units represents largest amount of energy?

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Calorie

Joule

Erg

Electron vol.

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

Which has the largest radius?

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CO³⁺

Mn³⁺

Fe³⁺

Cr³⁺

The unit of rate constant for a zero order reaction is

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Liter sec^-1

Liter mol^-1sec^-1

Mol liter^-1sec^-1

Mol sec^-1

In a crystal a ≠ b ≠ c, a = γ = 90° and β ≠ 90°, it is

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Monoclinic

Rhombic

Trigonal

Tetragonal

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