Question # 1

Which volume of gas has minimum value

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Apparent volume

Actual volume

Excluded volume

All have equal value

A state function which describes together the internal energy and product of pressure and volume is called

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Enthalpy

internal energy

Work

Kinetic energy

The value of general gas constant R is derived from:

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Newton's Cooling law

Maxwell's law

Avogadro's law

Charle's law

Potassium fertilizers are especially useful for:

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Tobacco

Potato

Coffee

All of these

The polarizabilities of elements mostly increase down the group due to the reason that

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the atomic numbers increase

number of protons increase

number of shells increase along with increase of shielding effect

the behaviour of the elements remain the same

In beta elimination reaction

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carbon number changes

unsaturated compound is formed

hybridization. ofC remains same

pi bonds are decreased

Which of the following is most found in protein molecule

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Carbon

Hydrogen

Oxygen

Nitrogen

Naturally occuring lipids are called

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Fats

Protein

Steroids

None

At higher temperature what is true for gases

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pressure is decreased

volume is decreased

number of moles are decreased

KE is increased

In water the most important oxidizing agent is dissolved molecular oxygen which ranges form

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2 - 4 ppm

4 - 6 ppm

2 - 5 ppm

4 - 8 ppm

Structure of CrO4(-2) is'

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triclinic

cubic

octahedral

tetrahedral

Of the following four reactions, formic acid and acetic acid differ in which respect?

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Replacement of hydrogen by sodium

Formation of ester with alcohol

Reduction of Fehling solution

Blue litmus reaction

Cu²⁺with d⁹electronic configuration appears

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Yellow

Pink

Blue

Green

Aspirin is

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Acetyl salicylic acid

Phenyl salicylic acid

Salicylic acid

Benzoic acid

If two lone pairs are present then bond angle of tetrahedral compound reduces to ______ degrees

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109.5°

107.5°

104.5°

None

The unit of specific conductivity is

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Ohm cm^-1

Ohm cm^-2

Ohm^-1cm

Ohm^-1cm^-1

Given data

(i) heat of formation of CO₂is -393.7 KJ mole^-1

(ii) heat of formation of H₂O is -285.8 KH mole^-1

(iii) heat of combustion of CH_{4 is -890.00 KJ mole}^-1

Enthalpy of formation of methane from C and H₂is calculated by Hess's law by

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Adding i + ii + iii

Adding 2(i) and ii and subtracting iii

adding i + iii and subtracting ii

Adding i + 2(ii) and subtracting iii

Normal by product of cracking is

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Ethane

Butane

Benzene

All of them

Chromium (VI) is highly toxic and can cause

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Blindness

Cancer

Liver problems

Blood problems

Preparation of vegetable ghee involves

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Halogenations

Hydrogenations

Hydroxylation

Dehydrogenations

The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with

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Hund's rule

Markownikov's rule

Pauli's Exclusion principle

Auf ban principle

Molar mass of high molecular w.f. polymers ranges from:

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1000 to 10000

10000 to 100000

100000 to 1000000

1000 to 100000000

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