Question # 1

Unit of rate constant is the same as that of the rate of reaction in

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2nd order reaction

3rd order reaction

Zero order reaction

1st order reaction

The number of moles of CO₂which contain 8.0 g of oxygen

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0.25

0.50

1.0

1.50

Chromatography involves the distribution of a solute between.

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Two stationary phases

Two mobile phases

A stationary phase and a mobile phase

Two stationary and two mobile phase.

Which of the following has linear structure.

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CO2

NH3

CH4

H2O

The iodine present in water can be separated by which one of the following techniques

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Sublimation

Chromatography

Filtration

Solvent extraction

How many moles of water results by burning 4 mole of H2 with excess of oxygen.

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1 mol

2 mol

3 mol

4 mol

If the volumes of reactants and products are same in a gaseous phase reaction, then the equilibrium state is not affected by

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Change of temperature

Change of pressure

Change of concentration

Catalyst

If absolute temperature of a 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

K_aand K_bof a conjugate acid and are related with k_was

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K_a+ K_b=K_w

K_a-K_b=K_w

K_a.K_b= K_w

K_a/ K_b= K_w

In which system all the three axes are of equal length and all angles are at right angle.

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Cubic

Tetragonal

Orthorhombic

Hexagonal

The deviation of a gas from ideal behavior is maximum at.

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-10 ^oC and 5.0 atm

-10^oC and 2 atm

0^oC and 2 atm

100^oC and 2 atm

The number of molecules in one dm³of water is close to

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Which properties of liquid is measured by polarimeter

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Conductance

Refractive index

Optical activity

Change in volume

Tin has Isotopes

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7

9

11

5

The solubility product of AgCI is 2.0 x 10^-10mol²dm^-6The maximum concentration of Ag⁺ions in the solution is

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2.0 x 10^-10mol dm^-3

1.41 x 10^-5mol dm^-3

1.0 x 10^-10mol dm^-3

4.0 x 10^-20mol dm^-3

When a reaction occurs in many steps than the slowest step is.

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Mechanism step

Rate determining step

enthalpy determining step

None of the above

The free expansion of the gas from high pressure towards the low pressure causes

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Increase of temperature

Decrease of temperature

Grater number of collisions among the molecules

Decrease of velocity of gas molecules

London dispersion forces are the only forces present among the

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Molecules of water in liquid state

Atoms of helium in gaseous state at high temperature

Molecules of solid iodine

Molecules of hydrogen chloride gas

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