Question # 1

When HCI gas is passed through saturated solution of rock salt, the solubility of NaCl

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Increases

May increase or decrease

Decreases

None of these

The non polar gases of low polarizability have a very:

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Low critical temperature

Stable critical temperature

High critical temperature

The deviation of a gas from ideal behaviour is maximum at

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-10°C and 5.0 atm

100°C and 2.0 atm

-10°C and 2.0 atm

0°C and 2.0 atm

Protein may have

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Primary structure

Secondary structure

Tertiary structure

All of these

Which one of the following statements about glucose and sucrose is incorrect:

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both are soluble in water

both are naturally occurring

both are carbohydrates

both are disacharides

Heat balance of earth is maintained by sphere:

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Hydrosphere

atmosphers

lithosphere

biosphere

Which one of the following does not act as pollutant

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Carbon monoxide

Sulphur dioxide

Hydrocarbons

Carbon dioxide

what is the exact value of angle in BF3

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90

104.51

119.5

120°

Nylon, 6,6 is a condensation polymer of

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adipic acid and glycol

phthalic acid and glycol

adipic acid and hexaethylene diamine

phthalic acid and hexaethylene diamine

Which of these polymers is a synthetic polymer?

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Animal fat

Starch

Cellulose

Polyester

In proteins, the alpha-helix and Beta-pleated sheet are examples of

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^{Primary Structure}

Secondary Structure

Tertiary Structure

Quaternary Structure

Equal volumes of ethylene glycol (molar mass = 62) and water (molar mass = 18) are mixed. The depression in freezing point of water is (given K_rof water = 1.86 K mol^-1kg and specific gravity of ethylene glycol is 1.11)

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0.003

3.33

0.333

33.3

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Fe is reduced

Fe is oxidized

Cl₂is oxidized

None of these

How many moles of hydrogen atoms does 3.2 g of methane, CH₄, contain?

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0.02

0.2

0.4

0.8

For every reaction occurring in the body three is at least one type of

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Enzyme

Vitamin

Protein

Amino acid

The silver bromide in hypo (Na₂S₂O_{3) solution is}

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Soluble

Not soluble

Precipitated

Not effect

Condensation of aldeydes withα-hydrogen gives:

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Acetal

Ketal

Aldol

Cannizzaro product

During oxidation in k₂Cr₂O_{7, Cr VI changes to :}

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I

II

III

IV

The sum of mole fractions (X) of components of solution is equal to

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100

200

One

Zero

Alkyl halides ae considered to be very reactive compounds towards nucleophiles because

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They have an electrophilic carbon

They have an electrophilic carbon and a good leaving group

They have an electrophilic carbon and a bad leaving group

They have a nucleophilic carbon and a good leaving group

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Condensation

Dehydration

Dehydrogenation

Hydrogenation

Which of the following species is paramagnetic?

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CO₂

NO

O^2-

CN

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