Question # 1

Detergents are:

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synthetic products

natural product

both a and b

none of the above

Which of the following has positive value of enthalpy

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Neutralisation

Atomization

combustion

All of the above

The pressure exerted by gas molecules is due to their

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collisions

densities

masses

kinetic energy

1 gram molecule refers to amount in grams

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Equivalent to 1 mole of an atom

Equivalent to 1 mole of a molecule

Equivalent to 1 mole of an ionic species

Of an ionic compound

Fungicides re the pesticides which:

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kill plants

kill herbs

kill insects

control the growth of fungus

The maximum hydrogen bonding is in:

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diethyl ether

ethanol

water

benzene

The pH range of acid rain is:

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6.5 -6

8-7.5

Less than 5

7- 6.5

Total heat content of a system is called

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Internal energy

Entropy

Enthalpy

All of these

The original volume of a gas at 0° is 273 cm³at constant pressure, its volume at 273°C becomes

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zero cm³

546 cm³

446 cm³

346 cm³

An example of neutral amino acid is

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Gylcine

Lysine

Aspartic acid

Glutamic acid

The order of reaction provides valuable information about of reaction

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Condition

Concentration

Mechanism

Parameters

In Lucas test primary alcohol make as oily layer

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Immediately

In 10 mins

On heating

Not

Which of the following is a strong electrolyte?

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Ca(NO₃)₂

HCN

CH₃COOH

NH₄OH

When electricity is passed through molten electrolyte consisting of alumina and cryolite, 13.5 g of Al are deposited. The number of faradays of electricity passed must be

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2.0

1.5

1.0

0.5

Which one is not a pollutant normally?

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Hydrocarbons

Carbon dioxide

Carbon monoxide

Sulphur dioxide

The apex angle of the folded filter paper is slightly greater than :

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60°

30°

45°

90°

The higher molecular weight materials which yield on hydrolysis the amino acids is called:

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Carbohydrates

Lipids

Fatty acids

Proteins

A compound X contains 50% sulphur and 50% oxygen by mass. What is the empirical formula of compound X?

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SO

SO₂

SO₃

SO₄

In zero order reaction, the rate is independent of :

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Temperature of reaction

Concentration ofreactants

Concentration of products

None of these.

In a primary alkyl halide, the halogen atom is attached to a carbon which is further attached to

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Only one carbon atom

Two carbon atoms

Three carbon atoms

one or no carbon atom

The reagents like KMnO_{4 and HCL cannot be filtered through Gooch crucible if its base is covered with :}

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Butterfly paper.

Ordinay paper.

Flying paper.

Filter paper.

Electronegativity values of the elements F, CI and Br vary

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F > CI > Br

Br > CI > F

Cl > Br > F

CI > F > Br

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