Question # 1

How many electrons can be accommodated in sub shell for which n = 3, l = 1

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6

8

18

32

Solubility of which substance decreases by increasing temperature.

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NaNO3

KNO2

NaCl

Ce2(SO4)3

Oxidation number of Cr in a C₂CrO₄ is

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+2

+4

+6

+8

Which of the following particles would on losing an electron has its outermost p-orbital as half filled

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Nitrogen atom

O⁺ion

P^-1ion

S⁺¹ion

Electromotive force of the cell is the

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Difference of two electrode potentials

May be sum or the difference of two electrode potentials

Sum of two electrode potential

Depends upon the nature of the cell

How many allotropic forms are present in carbon

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Two

Three

Four

Five

Under which conditions of temperature and pressure will a real gas behave most like an ideal gas.

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Low temperature and how pressure

High temperature and high pressure

Low temperature and high pressure

High temperature and low pressure

Which is not example of natural plasma.

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Lightening bolt

Aurora

Neon sign

Sum

An aqueous solution of ethanol in water has vapour pressure.

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Equal to that of water

Equal to that of ethanol

More than that of water

Less than that of water

The long chains of amino acids are coiled about one another onto a spiral by

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Ionic bond

Van der walls forces

Hydrogen bonding

Overlapping of orbitals

Weak intermolecular forces are present in.

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Only gases

Only liquid

Only solids

gases, liquids and solids

Electrolysis is used for

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Electroplating

Refining of copper

Manufacture of caustic soda

All of the above

Diamond is a bad conductor of electricity because

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It has a tight structure

It has a high density

There are no free electrons present in the crystal of diamond to conduct electronics

None of these

Dipole Moment of H2O is.

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1.61 D

1.85 D

0.95 D

1.49 D

Solubility curve of CaCl26H2O shows

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Decrease in solubility with increase of temperature

Increase in solubility with increase of temperature

Discontinuous increase in solubility with temperature

No effect of temperature on solubility

the number of moles of CO2 which contain 8.0 g of oxygen.

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0.25

0.50

1.0

1.50

Fuel cells are the means by which chemical energy may be converted into

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Heat energy

Magnetic energy

Sound energy

Electric energy

Chromatographic technique is very useful for

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Isolation

Purification

separation

All of them

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