Question # 1

Isopropyl alcohol on oxidation forms

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Acetone

Ether

Ethylene

Acetaldehyde

Detergents are

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Synthetic products

Natural products

Both A and B

None of the above

The most reactive compound for electrophilic nitration will be

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Benzyl chloride

Benzoic acid

Nitrobenzene

Chlorobenzene

The credit of discovering neutron goes to

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Rutherford

Langmuir

Chadwick

Austen

The number of atoms contained in 11.2 L of SO₂ at S.T.P are

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3/2 x 6.02 x 10²³

2 x 6.02 x 10²³

6.02 x 10²³

4 x 6.02 x 10²³

The equilibrium

Cr₂O^2-₇ 2CrO²₄ is shifted to right in

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An acidic medium

A basic medium

A neutral medium

It does not exist

Which of the following elements is most electronegative?

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Oxygen

Chlorine

Nitrogen

Fluorine

Calcium cyanamide on treatment with steam under pressure gives NH₃ and

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Calcium carbonate

Calcium hydroxide

Calcium oxide

Calcium bicarbonate

Water (H2O) is liquid while hydrogen sulphide (H₂S) is a gas because

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Water has higher molecular weight

Hydrogen sulphide is a weak acid

Sulphur has high electronegativity than oxygen

Water molecules associate through hydrogen bonding.

Which of the following does not reflect the periodicity of elements?

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Bonding behaviour

Electronegativity

Ionisation potential

Neutron/proton ratio.

Which of the following with aqueous KOH will give acetaldehyde?

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1,2-Dichloroethane

1, 1-Dichloroethane

Chloroacetic acid

Ethyl chloride

Which of the following with aqueous KOH will give acetaldehyde?

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1, 2-Dichloroethane

1, 1-Dichloroethane

Chloroacetic acid

Ethyl chloride

All the naturally occurring processes proceed spontaneously in a direction which lead to

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Decrease of entropy

Increase of enthalpy

Increase of free energy

Decrease of free energy

Which of the following statements is correct with respect to the property of elements with increase in atomic number in the carbon family (group 14)?

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Their metallic character decreases

The stability of +2 oxidation state increases

Their ionization energy increases

Their atomic size decreases

Which of the following statement regarding catalyst is not true?

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A catalyst remains unchanged in composition and quantity at the end of the reaction

A catalyst can initiate a reaction

A catalyst dose not alter the equilibrium in a reversible reaction

Catalysts are sometimes very specific in respect of reaction.

Potassium is kept in

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Water

Ammonia

Alcohol

Kerosene.

The total pressure exerted by a number of non-reacting gases is equal to the sum of partial pressure of the gases under the same conditions is known as

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Boyle's law

Charle's law

Avogadro's law

Dalton's law

The movement of solvent molecules through a semipermeable membrane is called

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Electrolysis

Electrophoresis

Osmosis

Cataphoresis

Which is true for an element R present in group 13 of the periodic table?

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It is a gas at room temperature

It has oxidation state of +4

It forms R₂O₃

It forms RX₂

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

Hess's law deals with

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Changes in heat or reaction

Rate of reaction

Equilibrium constant

Influence of pressure on volume of a gas.

Sodium thisoulphate is used in photography because of its

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Oxidizing behaviour

Reducing behaviour

Complexing behaviour

Photochemical behavior

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