Question # 1

On electrophoresis for plasma proteins using buffer of pH 8.6

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The proteins are neutral

The proteins carry negative charge

The proteins carry positive charge

The proteins are easily precipitated

The conversion of an halide of an alkene is an example:

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addition reaction

substitution reaction

elimination reaction

oxidation reaction

Methyl butyrate has an smell of:

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apple

pine apple

banana

winter green

Which property of liquid is measured by polarimeter

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Conductance

Optical activity

Refractiye Indéx

Change in volume

Which is not an air pollutant

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N₂

CO

NO

N₂O

What is the effect of polluted air on environment:

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ozone

acid rain

global warming

smog

Which of these polymers is an addition polymer?

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nylon 6,6

Polystyrene

terylene

epoxy resin

Wt. of 112 ml of oxygen at NTP on liquifaction would be

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0.32 g

0.64 g

0.16 g

0.96 g

Which one of the following doesn't exhibit allotropy?

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Bi

As

N

P

Rigid rocky crust earth upto a depth of 100 km is called:

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Atmosphere

Hydrosphere

Lithosphere

All of these

Which of the following is an example of diffusion?

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Spreading of smell of flowers in garden

Steam condensing on a cold window

Bubbles rising in a beaker of boiling water

All of above

For the carbylamine reaction we need hot alc.KOH and

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Any amin and chloroform

Chloroform and Ag powder

A primary amine and chloroform

A mono alkyl amine and trichlorom-ethane

How many cm³of 1 M H₂SO₄required to neutralize 10 cm³of 1 M NaOH

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2 cm³

2.5 cm³

5 cm³

10 cm³

Which of the following will not give iodoform test?

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Ethanol

Ethanal

Isopropyl alcohol

Benzyl alcohol

Hydrolysis of trichloromethane with aqueous KOH gives

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Potassium formate

Acetylene

Chloral

Methanol

Generally ionization energy of atoms decreases by

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Decreases in atomic size

Increase in atomic size

Increase in nuclear charge

None of these

Which of these polymers is an addition polymer

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Nylon 6,6

Polystyrene

Terylene

Epoxy resin

Cotton is an example of

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Animal fibre

Mineral fibre

Vegetable fibre

Synthetic fibre

Which of the following molecules has unpaired electrons in anti-bonding molecular orbitals?

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O₂

N₂

Br₂

F₂

Mass of simple electron is:

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9.1 x 10^-31 kg

9.1 x 10^-30 kg

1.66 x 10^-31 kg

9.1 x 10^-31 kg

Which step is unnecessary for purification of water for drinking purposes

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Aeration

Coagulation

Treatment with chlorine

Treatment with iodine

Acetic acid is obtained when

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Methyl alcohol is oxidized with potassium permanganate

Calcium acetate is distilled in the presence of calcium formate

Acetaldehyde is oxidized with potassium dichromate and sulphuric acid

Glycerol is heated with sulphuric acid

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