Question # 1

Why a C - Cl bond breaks by uv light

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Cl is most electronegative

Cl is volatile

C - Cl bond energy is smaller than that of C - H bond energy

Uv light provides energy which is sufficient to break C - Cl bond and not C - H bond

If V₁= 5 litres, P₁= 2 atm, T₁= T₂= 273°C and V₂= in liter

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5

80

125

10

Zwitter ion are

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Basic

Acidic

Neutral

Carry both -ve and +ve charges

According to kinetic molecular theory, kinetic energy of molecules increases when they are:

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melted from solid to liquid state

frozen into a solid

condensed into liquid

mixed with other molecular at low temperature

Correct order for the reactivity ofalkyl halide in S, reactions

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R-I>R-F>R-CI

R-F>R-CI>R-I

R-I>R-CI>R-F

R-CI>R-I>R-F

The temperature in the incineration process has a range:

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900 to 1000°C

650 to 1100°C

950 to 1300°C

500 to 900°C

99.5% mass of lithosphere is made of

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03 elements

8 elements

11 elements

15 elements

Diffusion of different species is due to difference of

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potential energy

temperature

density

all the above

One of the following compound reacts with its own oxidation product (an oxidation involves no loss of carbon) to give sweet odour liquid

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Propanal

Propanone

1-propanol

Propanoic acid

Water is purified by the process:

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Aeration

Coagulation

Chlorination

All of these

Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:

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Eyes

Ears

Stomach

Nose

For the representative elements from left to right across a period in the periodic table, the electron effinity of the atom generally

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Increases

Remains constant

Decreases

Not clear

N₂ + O₂ ⇌2NO

The unit of K_c for tis reaction will be:

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No unit

mol^-2 dm^-3

mol^-1 dm^-3

mol^-2 dm⁺³

The oxidation number of free element is always taken to be

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0

1

2

-1

The human body can synthesize ______ amino acids

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1

10

20

19

Content is a combination of mainly:

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Calcarious

Argillaceous

Calcarious and argillaceous

Al₂O₃

Type of isomerism in BrCH=CHBr is:

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Structural isomerism

Conformational isomerism

Geometrical isomerism

Positional isomerism

In sp²hybridization bond angle is _____

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120°

180°

109.5°

None

When electricity is passed through molten electrolyte consisting of alumina and cryolite, 13.5 g of Al are deposited. The number of faradays of electricity passed must be

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2.0

1.5

1.0

0.5

Which of the following process is employed to convert alkyl halide into alcohol?

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Addition

Substitution

Dehydrohalogenation

Molecular rearrangement

Which of the following nitrogen fertilizer contains more nitrogen

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NaNO₃

KNO₃

NH₄NO₃

Urea

Pauli's principle is applicable to

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Degenerate orbits

Two electrons in the same orbital

One electron

None

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