Question # 1

Crystal to diamond is.

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Ionic

Molecular

Covalent

Metallic

In the ground state of an atom, the electron is present

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In the nucleus

In the second shell

Nearest to the nucleus

Farthest from the nucleus

Which one of the following substances is used as water absorber in combustion analysis.

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Mg(CIO4)2

50% KOH

Lime water

Dilute solution of NaOH

Noon has low critical temperature and pressure as compared to other gases. the most probable reason is that

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Its octet is complete

It is a monoatomic gas

It has very low polarizability

It has least forces of attraction

The atomis radius is of the order of

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10^-8cm

10⁸cm

10^-12cm

10^-10cm

A filtration process could be very time consuming if it were not aided by a gentle suction, which is developed.

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If the paper covers the funnel up to its circumference

If the paper has got small sized pores in it

If the stem of the funnel is large so that it dips into the filtrate

If the paper fits tightly

A solution will be unsaturated if

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Ionic product = Kap

Ionic product < Ksp

Ionic Product > Ksp

both 'a' and 'b' are correct

Which one of the following relationship is correct about energy and frequency.

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E = hv

E = h/v

E = v/h

h = v/E

the nature of the positive rays depend on

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The nature of the electrrode

The nature of the discharge tube

The nature of the residual gas

All of the above

Acetone and chloroform are soluble in each other due to

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Intermolecualr hydrogen bonding

Dipole-dipole interaction

Instantaneous dipoles

All of the above

Molal boiling point elevation depends upon

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Nature of solvent

Natrue of solute

Vapour pressure of solution

None of these

The mass of one mole of electrons is

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1.008 mg

0.55 mg

0.184 mg

1.673 mg

Which substance is nto a dehydrating agent.

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CaCl3

CdCl2

Silica gel

P2O5

Compound which undergo sublimation is

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KMnO4

CaCO3

NH4Cl

Na2CO3

Chromatographic technique is very useful for

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Isolation

Purification

separation

All of them

The nature of copper crystals is

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Metallic

Ionic

Covalent

Molecular

The volume occupied by 1.4 g of N2 at S.T.P is

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2.24 dm3

22.4 dm3

1.12 dm3

112 cm3

The reaction that involves gases, its rate does not depend upon

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Catalyst

Temperature

Moles dm^-3

Partial pressure

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