Question # 1

A solution of sodium sulphate was electrolysed using some inert electrodes.The products at the electrodes are

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O₂, H₂

O₂, Na

O₂, SO₂

O₂, S₂O²-₈

The formula of nitre is

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KNO₃

NaNO₃

NaCI

Na₂CO₃

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

Which inorganic precipitate acts as semipermeable membrane?

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Calcium sulphate

Barium oxalate

Nickel phosphate

Copper ferrocyanide

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.

Ozone is not

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An allotrope

A powerful oxidizing agent

Paramagnetic

A bent molecule

The number of atoms in 0.0004 g of magnesium is close to

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24

2 x 10²⁰

10²⁰

6.02 x 10²³

Which has largest first ionization energy?

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Li

Na

K

Rb

The structure of XeF₆

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Distorted octahedral

Pyramidal

Tetrahedral

None of the above

Evaporation of water is

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An exothermic change

An endothermic change

A process where no heat changes occur

A process accompanied by chemical

Which of the following nitrogen fertilizer contain more nitrogen

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NaNO₃

KNO₃

NH₄NO₃

Urea

An endothermic reaction is one in which the reacting substances

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Have more energy than the products

Have less energy than the products

Have the same energy as the products

Are at a higher temperature than the products.

The IUPAC name of the compound having the formula (CH₃)₃C - CH = CH₂is

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1, 1-Dimethyl-3-butene

1, 1, 1-Trimethyl-3-propene

3, 3,-Dimethyl-1-butene

3, 3, 3,-Trimethyl-1-propene

Which for the following has greatest reducing power?

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Hl

HBr

HCl

Hl

The isomers due to the unequal distribution of carbon atoms on either side of the functional group belonging to the same homologous series are called

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Functional isomers

Position isomers

Chain isomers

Metamers

Red P can be obtained from white P by

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Heating it with a catalyst in an inert atmosphere

Distilling it in an inert atmosphere

Dissolving it in CS₂and crystallzing

Melting it and pouring the liquid into water

When sulphur is boiled with Na₂SO₃solution, the compound formed is

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sodium sulphides

Sodiums sulphates

Sodium persulphate

Sodium thiosulphate

Which one of the following compounds does not exist?

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NCl₅

AsF₅

SbCl₅

PF₅

Isopropyl alcohol on oxidation forms

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Acetone

Ether

Ethylene

Acetaldehyde

Which of the following elements is most electronegative?

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Oxygen

Chlorine

Nitrogen

Fuorine

What quantity of limestone (CaCO₃) on heating will give 56 kg of CaO?

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1000 kg

56 kg

44 kg

100 kg

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