Question # 1

Doubling the pressure in a liquid phase reaction

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Will double the rex

Will increase the rex

Will decrease the rex

Will not alter the concentration of reactant

If internal energy of the system is increased

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Change in state of the system may occur

Temperature of the system may rise

Chemical reaction may take place

All of these

solubility of carboxylic acids decreases in water with increase in molar mass because

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Bigger molecules are more polar

bigger molecules have bigger non-polar groups

bigger molecules make more hydrogen bonds

bigger molecules can form lesser hydrogen bonds/molecule

Geometry of simple molecule with sp2 hybridization

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Triangular planar

Trigonal

Square planner

Pyramidal

Image a man is sitting in a room. The room is closed from all sides, no entry no exit of any gas. If the room expands suddenly then:

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he will be frightened

he will feel cool

his blood pressure will decrease

he will feel warmth

The energy difference of d-orbitals varies from

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Atom to atom

lon to ion

Electron to electron

proton to proton

On the basis of intermolecular forces diamond is a

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ionic solid

covalent solid

metallic solid

molecular solid

SO₂and NO₂cause pollution due to increase in

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Buffer action

Basicity

Acidity

Neutrality

If there are weak intermolecular forces in a liquid, it will be

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more volatile

less volatile

more dense

less heavy

In elimination reaction i.e, in the formation of alkene, the reactivity of alkyl halide is in the order:

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CI>Br>I

I>Br>Cl

Br>CI>I

I>CI> Br

All of the following are non covalent except

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Hydrophobic interactions

Disulphide bond

Hydrogen bond

Electrostatic bond

The measurement of degree of disorder is

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Internal energy

Enthalpy

Entropy

None

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When quantity of electricity passed is one faraday then the mass deposited at the electrode is equal to

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One gm, atomic weight

One gm, Equivalent

Eletrochemical equivalent

None of the above

A compound containing carboxyl group in them are called:

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Ketone

Ether

Carboxylic acids

Polycarboxylic acid

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Introduction of an inert gas at constant volume

Introduction of PCl₃(g) at constant

Introduction of PCl₅(g) at constant volume

Introduction of Cl₂at constant volume

Which of the following has unchanged valency?

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H

Na

Fe

Oxygen

Which of the following decolorized Br₂-water

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Methane

Ethane

Ethene

Propane

For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to

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Hydrolysis

Oxidation

Hydrogenation

Electrolysis

Which one of the following substance is no used as drying agent in desiccators

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Silica gel

CaCl₂

Phosphorous

NaCL(50%)

Vegetable oils are

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Unsaturated fatty acids

Glycerides of unsaturated fatty acids

Glycerides of saturated fatty acids

Essential oils obtained from plants

5-d series is in the period :

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4th

5th

6th

7th

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