Question # 1

Colligative properites are the properties of

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Dilute solutions which behave as nearly ideal solution

Concentrated solution which behave as nearly non-ideal solution

Both a and b

Neither a nor b

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The value of K_pfalls with a rise in temperature

The value of K_pfalls with increasing pressure

Adding V₂O₅catalyst increase the equilibrium yield of sulphur trioxide

The value of K_pis equal to K_c

A buffer solution can be prepared by mixing

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Weak acid and its salt with weak base

Weak base and its salt with strong acid

Strong acid and its salts with weak base

Strong base and its salt with weak acid

The quantitative relationship between rate and concentration is given by.

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Law of mass action

Rate law

Both of these

Le Chatelier's principle

When liquid water changes to ice its volume expands. The expansion in volume is.

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5%

9%

10%

18%

Which one is not example of a sublimate.

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NH4Cl

I

NaCl

Benzoic Acid

18 g of glucose is dissolved in 90 g of water. The relative lowering of vapour pressure is equal to

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1/5

5.1

1/51

6

Which particle has a mass 1/1836 time, that of hydrogen.

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Proton

Positron

Electron

Neutron

One mole of ethanol and one mole of ethane have an equal

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Masses

Number of atoms

Number of electrons

Number of molecules

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

At constant volume of a system remains constant and the heat is absorbed by the system, them amount of heat absorbed is called

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Enthaply change of the system

Internal energy change of the system

Total enthalphy of the system

Total internal energy of the system

De Broglie equation treats electron to be.

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A particle

Wave

Both particle and wave

None of these

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

An atomic orbital has l =1 , m =+1, 0, -1, n = 3 than which one of the following atomic orbital has such values.

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2s

2p

3p

3d

In which , case particles are separated from each other.

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Fusion

Condensation

Neutralizations

Vaporization

Colligative properties are the properties of.

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Dilute solution which behave as nearly ideal solutions

Concentrated solutions which behave as nearly non ideal solutions

Both a and b

Neither a nor b

The mass of two moles of electrons is

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1.10 mg

1.008 mg

0.184 mg

1.673 mg

The wave number of the light emitted by a certain source is 2 x 10⁶m. the wavelength of this light is

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500 nm

500 m

200 nm

5 x 10⁷m

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