Question # 1

Which of the following species has the highest ionization potential?

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Ne

Al⁺

Mg⁺

Li⁺

For effective collisions the molecules slow down before collision and their kinetic energy decreases which results in increase in their

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Activation energy

Average energy

Potential energy

Collisions frequency

Which is not the poplar reaction

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Permonosulphuric acid is known as

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Marshall's acid

Carlo's acid

Sulphuric acid

None of these

Freezing point depression is measured by

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Beckmann's apparatus

Lands Berger's method

Antifreeze apparatus

All of the above

Alcohals can be distinguished using test:

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Lucas

Tollen's

Koib's

William's

Which of the following is an isomer of ethanol

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CH₃OCH₃

C₂H₅OC₂H₅

CH₃OH

C₂H₅OH

Electrons in degenerate orbitals are placed in separate orbitals with same spin according to

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Hund's rule

Pauli exclusion principle

Aufbau principle

Mosley's law

Which reagent could be used to distinguish between CH₃CH(OH)CH₂CHO and CH₃COCH₂CH₂OH

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Acidified potassium dichromate

Dilute sulphuric acid

2,4-dinitrophenylydrazine

Fehling's reagent

Which of the following posses linear geometry

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Alkane

Alkene

Alkyne

Benzene

The number of unpaired electrons in Fe³⁺(Z = 26) are

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5

6

3

4

Which of the following does give violet colour with neutral ferric chloride?

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Acetic acid

Salicaylic acid

Formine acid

Benzoic acid

An organic compound, on treatment with Br2 in CC14 gives bromoderivative of an alkene. The compound will be

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CH3 - CH = Ch2

CH3CH = CHCH3

HC = CH

H2C = CH2

The shape of the molecule SF₂Cl₂is

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Trigonal bipyradmidal

Cubic

Octahedral

Tetrahedral

The element caesium bears resemblance with

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Ca

Cr

Rubidium

None of the above

The temperature at which the vapour pressure of a liquid becomes equal to external pressure is

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Melting point

Sublimation point

Inversion point

Boiling point

Which of the following groups will increase the acidity of phenol?

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-NO₂

-CN

-X (halogens)

All

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Diastase

Lipase

Inverters

Zymase

In which of the following pairs, the numbers of electrons in the outermost shell are different?

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As,Sb

Ge,Sn

In,pt

Se,Te

Acid rains are produced by

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Excess NO₂and SO₂from burining fossil fuels

Excess production of NH₃by industry and coal gas

Excess release of carbon monoxide by incomplete combustion

Excess formation of CO₂by combustion and animal respiration

A balloon contains 0.02 gram of H₂gas, it contains H₂molecules

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6.02 x 10²³

3.01 x 10²²

6.02 x 10²¹

3.01 x 10²¹

The amount of energy required to remove an electron from an atom of an element in the gaseous state is called

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Electron affinity

Electronegatively

Ionization energy

None of these

Wolf-kishner reduction is used for the reduction of

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Nitro compounds

Carboxylic acids

Carbonyl compounds

Olefins

The M.P. of carboxylic acids containing even number of carbon atoms is ______ than the next

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Higher

Low

Equal

None

Formic Acid is obtained from Red out by:

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Distillation

Crystallization

Filtration

sublimation

Which of the following elements is most metallic?

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P

As

Sb

Bi

Wholer prepared urea from

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Ammonia

NH₄CNO

NH₃

Uric acid

The experimental relationship between a reaction rate and the concentration of reactants is called

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Order or reaction

Rate law

Activated complex

Molecularity

Macromolecules or polymers are large molecules built up from small molecules called monomers. This hypothesis put forward by

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Schrodixger

Standinger

Lewis

Newton

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-1.10 V

+1.10 V

-0.42 V

+0.42 V

Which of the following reagent cannot be used for preparing alkyl chloride from alcohol?

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HCl + anhyd. Zncl₂

NaCl

PCl₅

SOCl₂

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