Question # 1

A single chloride free radical can destroy the ozone molecules

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100

100000

10000

10

All amino acids are optically active except

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Amino acid

Series

Threonine

Tryltophan

Air at sea level is dense.This is a practical application of

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Boyle's law

Charle's law

Avogadro's law

Dalton's law

Simple sugars are:

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Monosaccharides

Disaccharides

Oligo saccharides

Trisaccharides

Which class of compound cannot show positional isomerism?

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Alkanes

Alkene

Alkynes

Alcohol

The highest oxidation state of manganese is

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+7

-7

+6

+4

The products of electrolysis of which of the followings are known

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Fused electrolyte

Aqueous solution of eleetrolyte

Solid electrolyte

Solid metal

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

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-10∘C and 5.0 atm

-10∘C and 2.0 atm

100∘C and 2.0 atm

0∘C and 2.0 atm

Which is the incorrect value of gas constant R?

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2.987 cal k^-1 mol ^-1

3.313 Nmk^-1 mol^-1

62400dm³ atm k^-1 mol^-1

1.10821atm dm3k^-1 mol^-1

For gas obeying Boyle's law if pressure is double, the volume becomes:

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Remains constant.

Double.

One half.

None of above.

The conversion of an halide of an alkene is an example:

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addition reaction

substitution reaction

elimination reaction

oxidation reaction

Acetylene is used in the manufacture of

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Rubber

Plastic

Ethyle alcohol

All of these

Which of the following is not fatty acid?

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Propanoic acid

Acetic acid

Phthalic acid

Butanoic acid

Which is the correct electronic configuration of Cr - 24

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1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁴, 4s²

1s², 2s², 2p⁶, 3s², 3p⁶, 3d³, 4s², 4p¹

1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁵, 4s¹

1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁵, 4p¹

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Pent -1-ene-3-yne

2-pentyne-4-ene

1-pentene-3-yne

Pent-2-yen-4-ene

The change in heat energy at constant temperature is called

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Enthalpy change

Heat of vaporisation

Bond energy

Internal energy change

Equal volumes of ethylene glycol (molar mass = 62) and water (molar mass = 18) are mixed. The depression in freezing point of water is (given K_rof water = 1.86 K mol^-1kg and specific gravity of ethylene glycol is 1.11)

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0.003

3.33

0.333

33.3

Which if the following has the highest freezing point at one atmosphere

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0.1 M NaCI

0.1 M sugar solution

0.1 M BaCI₂

0.1 M FeCI₂solution

1.1 mol of A is mixed with 2.2 mol of B and the mixture is kept in on litre flask till the equilibrium is reached. At equilibrium, 0.2 mol of C is formed. If the equilibrium reaction is A+2B 2C+D, the value of equilibrium constant is

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0.002

0.004

0.001

0.003

Which is not the poplar reaction

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CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

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10,000

20,000

100,000

50,000

In the ground state of an atom, the electron is present

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In the nucleus

In the second shell

Nearest to the nucleus

Farthest from the nucleus

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