Question # 1

Which of the following is not a characteristics of solids.

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Definite shape

Definite mass

Definite volume

Fluidity

Water that easily forms a lather of films and frotha when agitated with a soap solution called.

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Hard water

Heavy water

Soft water

Washing water

The size of E coli bacteria is._____________ nm

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75000

2000

200

5

Which of the following colligative properties can be used to characterize colloidal particles.

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Lowering in vapour pressure

Elevation in boiling point

Depression in freezing point

Osmotic pressure

Petrol can be saved by

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Driving at a constant and moderate speed

Ensuring correct type pressure

Switching off the engine at traffic lights

All of these

The terpenoid responsible fo the smell

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Camphor

Genenial

Citral

Carvone

Rutherford proposed the nuclear model of the atom to account for the result of experiments in which the alpha particles are scattered from metal foils.Which of the following statements in not related to Rutherford observation.

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An atom consists of central core or nucleus around which the protons exist.

The nucleus has most of the mass of the atom

the nucleus consists of protons and neutrons.

Each distinct atom has a specific number of protons.

In the process of electrosmosis

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Colloidial particles move towards the electrodes

Both colloidal particles and dis persons medium move

Only dispersion medium moves to carry the current

Positively charged colloidal particles move, but negatively charged particles remain stationary

Which of the following is not a characteristic of dye.

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It must have suitable colour

It must be able to fix to fibre

It must be fast to wash and lights

It must be highly soluble in water

Eosin dye belongs to the group of dyes known as.

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Nitroso syes

Triphenylmethane dyes

Diphenylmethane dyes

Phthalein dyes

Which of the following energy is trapped by the autotrophic organisms.

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Mechanical energy

Electrical energy

Radiant energy

Electronic energy

Granulated sugar contains _____________% sucrose

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80

99.30

60

90

Group III A of the periodic table consist of elemetns.

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3

4

5

6

The different layers in graphite are held together by

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Ionic bonding

Metallic bonding

Covalent bonding

Van der Waals forces

Which of the following process is not related with cannot cycle.

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Iso thermal expansion

Adiabatic expansion

Isothermal compression

Isobaric compression

Group IV A consist of elements

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3

4

5

6

The number of degrees of freedom and number of components for a system of containing undissolved salt , in equilibrium with water vapor are.

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2,2

3 , 2

1 , 1

1 , 2

C is -2 butene on reaction with bromino give 2,3 -dibromobutane which is

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Recemic mixture

Meso isomer

Dextoroisomer

Levoisomer

Thermogravimetic analysis has application is which of the following fields

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Gravimetric analysis

Discovery of new methods ofseparation

Determination of purity and thermal stability

All above

The particle motion in solids is

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Only vibratory

Only translator

Vibratory and rotatory

Only translatory

Which of the following contains both covalent and ionic bond.

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CCl4

NH4Cl

CaCl2

H2O

The fraction of the total current carried to an ion is called itss.

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Ionic mobility

Transport number

Limiting ionic conductance

None of these

Yellow colour of the flame is observed with

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Calcium salt

Barium salt

Sodium salt

Potassium salt

Amorphous boron on burning in air form

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B(OH)3

Only B2O3

Only BN

Mixture of B2O3 and BN

The electrical resistance of stainless steels can be as much as______ time that of carbon steel.

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5

6

10-

15

The branch of chemistry which deals with the rate of reaction as well as mechanism is known as

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Wave mechanism

Classical thermodynamcis

Chemical kinetics

Phtochemistry

The green colour of glass is due to the presence of.

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Chromium (III)

Cobalt (II)

Mn (IV)

Iron(III)

Which of the following is not adsorptive separation process.

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Parex

Olex

Penex

None of these

Metallic magnesium is obtained by

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Reduction of MgO with Coke

Electrolysis of an aqueous solution of MgCl2

Electrolysis of molten MgCl2

Displacement of magnesium by iron form MgCl2 solution.

When CH3COOH is titrated against NaOH the pH as the equivalence point is.

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7

> 7

o

>7

6.8

The multiplicity of the electronic state is equal to.

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S + 1

2S + 1

2S - 2

2S + 2

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