Question # 1

The vapour density of a gas is 11.2 The volume occupied by 11.2 g of this gas at N.T.P is

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22.4 liters

11.2 liters

1 liter

2.24 liters

Which of the following has linear shape?

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SP

SP²

SP³

None of the above

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

Which of the following value of ΔHf° represent that the product is least stable?

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-94.0 kcal mol^-1

-231.6 kcal mol^-1

+21.4 kcal mol^-1

+64.8 kcal mol^-1

Which inorganic precipitate acts as semipermeable membrane?

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Calcium sulphate

Barium oxalate

Nickel phosphate

Copper ferrocyanide

Crystal can be classified in to basic crystal habits

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7

4

14

3

Which of the following has least mass?

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2 gram atom of nitrogen

3 x 10²³ atoms of C

1 mole of S

7.0 g of Ag.

Fertilizer are made by

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Nature only

Artificial methods only

Both artificial and natural methods

None of the above

The reaction/method that does not give an alkane is

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Catalytic hydrogenation of alkanes

Wurtz reaction

Hydrolysis of alkyl magnesium bromide

Dehydrohalogenation of an alkyl halid.

Reaction of ethylamine with chloroform in alcoholic KOH producers

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CH₃OH

CH₃NC

C₂H₅NC

C₂H₅CN

By using the fluted filter paper rate of filtration is

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Increased

Decreased

Filtration is constant

Having no effect

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

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Chlorination, nitration, reduction

Nitration, Chlorination, reduction

Nitration, reduction, chlorination

Nitration, reduction, acylation, chorination, hydrolysis

Ethyl alcohol is industrially prepare from ethylene by

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Permanganate oxidation

Catalytic reduction

Absorbing in H₂SO₄followed by hydrolysis

Fermentation

Ammonia gas used directly as a fertilizer is injected into the soil at a depth of about

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Two inches

Three inches

Five inches

Six inches

The relative rates of diffusion of a gas (molecular weight = 128) as compared to oxygen is

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2 times

1/4

1/8

1/2

Hybridization explain the ----------- of orbitals

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Type of Bonding

Shapes

Shape and Type of bonding

None of above

The valence orbital configuration of an element with atomic number 23 is

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3d⁵

3d³, 4s²

3d³, 4s¹, 4p¹

3d², 4s², 4p¹

Among alkali metal salts, the lithium salts are the poorest conductors of electricity in aqueous solution because of

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Easy diffusion of Li⁺ions

Lower ability of Li⁺ions to polarize water molecules

Lowest charge to radius ratio

Higher degree of hydration of Li⁺ions

Inert pair effect plays an important role in case of

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F

Al

Si

Tl

During the folding of filter paper the apex form angle of about

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80°

60°

180°

90°

With increasing principle quantum number, the energy difference between adjacent energy levels in H atom

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Decreases

Increases

Remain constant

Decreses for low value of Z and increases for higher value of Z.

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

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