Question # 1

Quantum number values for 2p orbitals are

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n = 2, l = 1

n =1, 1 = 2

n =1, l = 0

n = 2, l = 0

The number of bonds in nitrogen molecules is.

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One pi and one sigma

One pi and two sigma

Thre sigma only

Two pi and one sigma

The value of Rydberg constant is.

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1.6 x 10⁷ m-1

1.9768 x 10⁷ m-1

1.09678 x 10⁷ m-1

1.7904 x 10⁷ m-1

Solvent extraction is an equilibrium process and it is controlled by

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Law of mass action

The amount of solvent used

Distribution law

The amount of solute

Which of the following molecule obey octet rule.

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BF3

BCl3

NH2

SF6

To achieve a good separation, the two liquids are gently shaken to increase their area of.

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Miscibility

Separation

contact

Solubility

An orbital which is spherical and symmetrical is

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S-Orbital

P - Orbital

d- Orbital

f - Orbital

Gases deviate from ideal behaviour at high pressure. Which of the following is correct for non-ideal behaviour of gases

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At high pressure, the gas molecules move in one direction only

At high pressure, the collisions between the gas molecules are increased

At high pressure, the volume of the gas becomes insignificant

At high pressure, the intermolecular attraction becomes significant

A real gas can be liquefied if.

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Temperature is more than critical temperature.

Temperature is less than critical temperature

Pressure is more than critical pressure and temperature is less than critical temperature

Its pressure is less than critical pressure

Bohr's model of atom, is contradicted by.

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Planck quantum theory

Pauli's exclusion prinsciple

Heisenberg's uncertainty principle

All of the above

Suppose a new element 'J' has discovered and has seven electron in the valence shell. Which statement about this element would be correct.

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It is monatomic

It form covalent bond with hydrogen

It forms stable positive ion

It forms covalent bond with group IA element

If absolute temperature of gas is doubled and the pressure is reduced to one half, the volume of the gas will.

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Remain unchanged

Increase four times

Reduce to 1/4

Be doubled

The drying agents used in desiccator is.

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BeCl2

MgCl2

CaCl2

SrCl2

Chromatography in which the stationary phase is a solid is classified as.

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Partition chromatography

Gas chromatography

Adsorption Chromatography

Thin layer chromatography

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

The relationship between K_pand K_cis given by

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Large value of distribution coefficient K means.

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Component of solute dissolved large in mobile phase

Components of solute do not dissolve in mobile phase

Components of solute remains at original spot

All statements are correct

Which of the following statements is correct about galvanic cell

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Anode is negative charged

Reduction occurs at anode

Cathode is positively charged

Reduction occurs at cathode

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