Question # 1

In van der Waal's equation of state of the gas law,the constant 'b' is measure of

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Intermolecular repulsions

Intermolecular collisions per unit volume

Volume occupied by the molecules

Intermolecular attraction

Transportation causes to produce CO₂ in atmosphere:

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72%

73%

74%

75%

1 gram formula refers to

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Amount in grams equivalent to 1 mole of a atom

Amount in grams equivalent to 1 mole of a covalent compound

Amount in grams equivalent to 1 mole of a ionic compound

Amount in grams equivalent to 1 mole of an ion

What will be the shape of a molecule which containstwo sigma bond pairs and one lone pair?

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Linear

V shape

Tetragonal

Triangular

Real gases deviate from the ideal behaviour at very

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high pressure

low temperature

low pressure

both a and b

The fat soluble vitamins are:

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A and B

B and C

C and D

A and D

The simplest separating unit of a polymer is called:

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Monomer

Dimer

Trimer

Macromer

Which element of group V-A and VII-A does not use d-orbital?

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Nitrogen

Sulphur

Arsenic

Chlorine

Which of the following has no hydrogen-bonding

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Diethyl ether

Water

Ethyl alcohol

Phenol

Choose the chief air pollutant among the following which depletes ozone layer

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Carbon monoxide

Carbon dioxide

Chloroflurocarbons and nitrogen oxides

Sulphur dioxide

Helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is

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same as that of a hydrogen molecule

half that of a hydrogen molecule

two times that of a hydrogen molecule

four times that of hydrogen molecule

The atomic mass is measured in atomic mass unit (a.m.u.) which is equal to

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1.661 x 10^{-27- Kg}

1.661 x 10^-24Kg

1.661 x 10^{-27- g}

1.661 x 10^-24mg

Biodegradable pollutant is

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Plastic

Asbestos

Sewage

Mercury

Vitamin A is present in

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Liver

Milk

Green vegetables

All

Metallic conduction is also called as :

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Ionic conduction.

Protonic conduction.

Electronic conduction

Super conduction

A solution consisting of 92 grams ethyl alcohol (C₂H₅OH) 96 grams methyl alcohol (CH₃OH) 90 grams water the mole fraction and mole percent of methyl alcohol is

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0.3. 30%

0.2, 30%

0.5, 30%

0.2, 20%

Which of the following cannot conduct electricity :

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NaCl fused.

NaCl(aq)

NaCl(Solid)

Both (b) and (c)

Which is the formula of tetra-ammine chloronitro platinum (VI) sulphate?

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[Pt(NH₃)₄(NO₂)]SO₄

[PtNO₂Cl(NH₃)₄]SO₄

[PtCl(NO₂)(NH₃)₄]SO₄

[Pt(NH₃)₄(NO₂)Cl]SO₄

Which of the following is a noble gas:

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Ne.

Cl₂.

H₂.

N₂.

A catalyst is a substance which increase the rate of a chemical reaction, but remains unchanged at the end of reaction, nut remains unchanged at the end of reaction, because

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It increases the temperature

It increase the surface area

It increases the rate constant

It decrease the energy energy of activation

Purines include

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Adenine

Guanine

Both a and b

None

Quantum number values for 2p orbitals are

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n = 2, l = 1

n = 1, l = 2

n = 1, l = 0

n = 2, l = 0

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