Question # 1

Proton was discovered by:

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Chadwick

J.J. Rhomson

Millikan.

Goldstein.

On the basis of VSEPR theory SO₂is a

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Liner molecule

A bent molecule

A strong molecule

A gaseous molecule

The rate of E₁reaction depends upon:

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The concentration of substrate

The concentration of nucleophile

The concentration of substrate as well as nucleophile

None of these

Three sp²hybrid are co-planar at an angle of

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104.5°

109.5°

107°

120°

Potassium ferrocyanide is a

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Mixed salt

Double salt

Complex salt

Normal salt

The solutions of NaCl and KCl are prepared separately by dissolving same amount of solute in water, which of the following statements is true fro these solutions ?

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KCl solution will have higher boiling point than NaCl solution.

Both the solutions have same boiling points.

KCl and NaCl solutions possess same vapour pressure.

KCl solution possesses lower freezing point than NaCl solution.

Down's cell is used to prepare

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Sodium carbonate

Sodium bicarbonate

Sodium metal

Sodium hydroxide

The reference electrode is made by using

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ZnCl₂

CuSO₄

HgCl₂

Hg₂Cl₂

Which of the following is a noble gas:

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Ne.

Cl₂.

H₂.

N₂.

The number of elements in the 4th periods of periodic table is

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8

10

18

32

When the rate of reaction is entirely independent of the conc. of reaction molecules then order of reaction is

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Zero

First

Second

Third

Complex protein molecules which catalyses the organic reactions in the living cells are called

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Living organisms

Enzymes

Viruses

Bacteria

Photochemical smog is caused by

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CO

CO₂

O₃

NO₂

The energy required to break one mole of bonds to form neutral atoms is called

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Bond length

Bond strength

Bond energy

None of these

NaHCO₃is commonly called

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Soda ash

Baking soda

Washing soda

None of these

The process in which water molecules surround solute particles is called

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Hydration

Salvation

Hydrolysis

Dehydration

The heat contents of all the elements in their standard states are taken to be

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1

2

0

None

Reductive ozonolysis of benzene produces

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Acetone

Maleic anhydride

Phthalic acid

Glyoxal

Out of 110 known elements, transition elements are

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40

60

50

80

DDT is formed from

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Benzene and Chlorobenzene

Chloral and Chlorobenzene

Chloral and Benzene

Chlorobenzene and chlorine

The general formula of amino acids is

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Strong reducing agents gave

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Greater positive value of standard reduction potential

Greater negative value of standard reduction potential

Lesser positive value of standard reaction potential

None of these

When the electron jumps form third, fourth, fifth orbits to the second orbit, the transitions are known as

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Paschen

Pfund

Balmer

Brackett

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

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s

p

d

f

Aledehydes ketones can be prepared form alcohols by their:

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Reduction

Oxidation

Decomposition

Synthesis

Cl₂reacts with CS₂in presence of AlCl₃to form

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CHCl₃

CCl₄

C₂H₅Cl

C₂H₆

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High temperature and low pressure

Low temperature and high pressure

Low temperature and low pressure

High temperature and high pressure

Standard reduction of Zn = -0.76 V and that of Ni is -0.25 V. On coupling them by a salt bridge which of these will act as anode

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Salt bridge will act as anode

Zn will act as anode

Ni will act as anode

None of these

Which of the following geometry is associated with the compound in which the central atom assumes sp³d hybridization?

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Planar

Pyramidal

Angular

Trigonal bipyramidal

The atom of an element is

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The smallest particle

The fundamental particle

The independent particle

The charged particle

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