Question # 1

How should the conditions be changed to prevent the volume of a given gas from expanding when its mass in increased

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temperature is lowered and pressure is increased

temperature is increased and pressured is lowered

temperature and pressure both are lowered

temperature and pressure both are increased

At equilibrium rate of evaporation and rate of condensation

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Become very high

Become very low

Become equal

Can never be equal

Moles of protons in 20g of SO3

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10

20

40

80

Type of polymer formed by the polymerization of two monomers is:

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homopolymer

copolymer

ter polymer

All of these

In which of these processes are small organic molecules changed into macromolecules?

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the fractional distillation of crude oil

the cracking of petroleum fractions

the hydrolysis of proteins

the polymerization

In a cubic lattice a unit cell is shard equally by how many unit cells?

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4

2

6

8

Coal contains sulphur in it:

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1-3%

1-6%

1-9%

1-12%

(CH₂O)_nis general formula for

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Monosacchardies

Oligosaccharides

Polysaccharides

None of these

At 100 atm, CH₄ develops:

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Ideal attitude

Non-ideal attitude

Serious attitude

Laughing attitude

The substance used in the soil to provide element.Which are essential for plant growth are known as:

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manures

fertilizers

pesticides

additive

Which of the following is not the required condition for the formation of smog

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Sufficient NO

Sunlight

Less movement of air

Winds

Which of the following is a polar molecules

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Carbon dioxide

Carbon tetrachloride

Methanol

Ethane

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Three times

Six times

Nine times

Two times

Chromic acid used to oxidize

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Aldehyde

Ketone

Both a and b

None of these

The solubility of a gas in water depends upon

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Nature of the gas

Temperature

Pressure of the gas

All of the above

The covalent radius of Cl atom is:

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99.4 pm.

176.7 pm

38 pm

76 pm.

2-Bromopentane is heated with potassium ethoxide in ethanol . The major product obtained is

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2-Ethoxypentane

Pent-1-ene

cis-Pent-2-ene

trans-Pent-2-ene

Tripple bond is present in

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O₂

H₂

N₂

Cl₂

Monocarboxylic acids exist as dimer because of

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Dipole-dipole attraction

Hydrogen bonding

Van der Waals forces

Conhesive forces

Which of the following is not isoelectronic?

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Na⁺

Mg²⁺

O^2-

Cl^-

The substances that are added to the soil to provide nutrient or assential elements required for plant growth, are called

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Additives

Fertilizer

Manures

Posticides

Preparation of vegetable ghee involves

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Halogenations

Hydrogenation

Hydroxylation

Dehydrogenation

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