Question # 1

For a given process the heat change at constant pressure q_pis related to the heat change at constant volume (q_v) according to

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q_p= q_v

q_p< q_v

q_p> q_v

q_p= qv/2

For a given process, the heat changes at constant pressure (q_p) and at constant volume (q_v) are related to each other as

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q_p= q_v

q_p< q_v

q_p= qv/2

The major portion of natural gas is

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Ethane

Propane

Butane

Methane

The unit rate of constan K ismole^-1 dm³S^-1for a chemical reaction, the order of reaction is :

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3

2

1

0

When H₂and I₂are mixed and equilibrium is attained, then

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Amount of HI formed is equal to the amount of H₂dissociated

HI dissociation stops

The reaction stops completely

None of these

Metal used in the preparation of Grignard's reagent is:

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Ca

Na

Mg

Zn

The specific conductance of 0.1 M NaCl solution is 1.06 x 10^-2ohm^-1mol^-1. Its molar conductance in ohm^-1cm²mol^-1is

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1.06 x 10²

1.06 x 10³

1.06 x 10⁴

53

The electrophile in aromatic sulphonation is

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H₂SO₄

HSO₄

SO₃

SO₃⁺

Aldehydes give reactions :

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Oxidation and reduction

Base-catalysed nucleophilic

Acid catalysed nucleophilic

All of these

Hydrogenation of alkenes/alkynes inthe presence of Ni as catalyst at 3000°C result in the formation of corresponding alkanes. This reaction is known as

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Sabatier-senderens reaction

kolbes reaction

Cannizaro's reaction

Haloform reaction

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The heat released is enthalpy of neutralization

The heat released is enthalpy of atomization

The heat released is enthalpy of sublimation

The heat released is enthalpy of formation

Glycine at pH7 has the structure

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H₂N -- CH₂-- COOH

H₃N⁺-- CH₂-- COOH

H₂N -- CH₂COO^-

H₃N⁺-- CH₂-- COO^-

Tertiary alkyl halides are practically inert to substitution by S_N2 mechanism because of

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Onsolubility

Instability

Inductive effect

Steric hindrance

The number of moles of solute dissolved per dm³of the solution is called :

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Normality.

Molarity.

None of above.

As compared to molar solution, in the molal solution the quantity of solvent is :

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Comparatively lesser

More or less equal

Comparatively greater

Very large

Na reacts with phenol to produce

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H₂gas

Benzene

CO₂gas

CO gas

The osmotic pressure of 1 m solution at 27°C is

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2.46 atm

24.6 atm

1.21 atm

12.1 atm

In Millikan method the oil droplet falls under the force of gravity but it moves upward due to

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Electric field

Magnetic field

Incident light

X-rays

Linear shape is associated with which set of hybrid orbitals

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sp

sp²

sp³

dsp²

The development of industries was a direct result of which major factor

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Population

Living standards

Depletion of resources

All of these

Ammonium nitrate fertilizer is not used for which crop

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Cotton

Wheat

Sugar cane

Paddy rice

Which compound shows more hydrogen bonding?

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C₂H₆

C₂H₅Cl

CH₃----O----CH₃

C₂H₅OH

Activity of the enzyme is reduced by

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Temperature

Concentration

pH

Inhibitors

The main source of natural fibre is

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Animal fibres

Vegetables fibres

Mineral fibres

All of the above

Which of the following compound is obtained on passing ethanol vapours on heated Al₂O₃?

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Ethylether

Acetone

Ethane

Ethanol

Sulphuric acid generates nitronium ion by reacting with

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Nitric acid

Nitrogen gas

Nitrous acid

Potassium nitrate

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Acidic amino acid

Basic amino acid

Neutral amino acid

None of these

A white precipitate ofsilver chlorideimmediately formed on additionof :

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Silver nitrate solution to sodium chloride solution.

Silver chloride solution to sodium nitrate solution.

Silver nitrate solution to potassium chloride solution

Silver nitrate solution to hydrogen chloride solution.

Which is a mixture of low boiling hydrocarbon

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Natural gas

Petroleum

Wood

Graphite

The human body can synthesize ______ amino acids

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1

10

20

19

The silver bromide in hypo (Na₂S₂O_{3) solution is}

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Soluble

Not soluble

Precipitated

Not effect

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