Question # 1

Which isotope of hydrogen is radioactive in nature.

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Protium and deuterium

Tritium only

Tritium and deuterium

Only deuterium

The hybridization of sulphur in sulphur dioxide is.

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sp

sp2

sp3

dsp2

carbon monoxide is harmful to human beings as it.

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Is carcinogenic

Is antagonistic to CO2

Has higher affinity for haemoglobin as compared to oxygen

Is destructive to O3

Which group contains elements that exist as monoatomic molecules.

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1

2

14

18

Which of the following carbides reacts with H2O to form propane.

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Al4C3

CaC2

SiC2

Sic

The digits which are necessary to express the result of a measurement to the precision with which the measurement is made are called.

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Non significant figures

Mathematical figures

Significant figures

Reagent errors

The number of vibrational degree of freedom for CO2 is

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2

3

4

5

Alums are generally used

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In Dying and water proofing of fabric

In arrest bleeding

IN water purification

All above

Select the correct IUPAC nae for [Co(NH3)6 ]2+

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Hexammoniacobaltate (II) ion

Hexaamminecobaltate (II) ion

Hexammoniacobalt (II) ion

Hexaamminecobalt (II) ion

Which of the following parameter is not involved in calculations based on Born Haber Cycle.

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Ionization enthalpy

Electron gain enthalpy

Electronegativity

Bond dissociation energy

Pesticide residues appear in which of the following foods.

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Milk

Fruit

Fish

Vegetables

All above

A catalyst increases the rate of a reaction because.

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It provides the necessary energy to the colliding molecules to cross energy barrier

It decreases the heat of the reaction

It decreases the order of the reaction

It provides a different path of lower activation energy.

Which of the following is an example of molecular solids.

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MgO

ZnO

Ice

Graphite

In the electronic structure of acetic acid,the total number of shared and unshaped pair of electrons are respectively.

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16 ,8

8 ,4

12 ,8

8 ,12

What is caustic potash

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NaOH

KOH

NaCl

KCl

Which element out of the following can ehibit a maximum con valency of seven.

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Chlorine

Sulphur

Fluorine

both Cl and F

Granulated sugar contains _____________% sucrose

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80

99.30

60

90

Ammonia when used directly as a fertilizer is to be injected about_____ under the surface to keep it from seeping out.

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2 inches

4 inches

6 inches

10 inches

The hardest material found in nature is

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Steel

Topaz

Diamond

Quartz

Putrefaction is

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Hydrolysis of proteins

Reduction of proteins

Bacterial oxidation of proteins

All of these

The maximum number of electrons in s,p,d and f sub shells are.

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2 in each

2, 6, 10, 18

2,6 ,10,14

5 in each

Each of the following compound is an aromatic except.

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Benzene

Naphthalene

Cyclopentadienyl cation

Cyclopentadienyl anion

Among alkali metals, the least metallic element is.

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Li

Na

Rb

Cs

The equation which relates the reaction rates and equilibrium constants of many reactions is known as.

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Taft equation

Hammett equation

Differential equation

Linear equation

Strength of H bond in inter mediate between

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Van der Waals forces and covalent bond

Ionic and covalent bond

Ionic and metallic bond

Metallic and covalent

Pick out the incorrect statement for Xe F6

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XeF6 is hydrolyzed practically to form XeOF4

It reacts with SiO2 to form Xe F4

On complete hydrolysis, it forms XeO3

It acts as F acceptor when treated with alkali metal fluoride, but cannot act as F donor to form complexes.

Bond angle is minimum in

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H2O

CO2

NH3

CH4

Nanoscience can be studied with the help of

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Quantum mechanics

Newtonain mechanics

Macro dynamics

Grophysics

Which of the following is not obtained when Br2 is added to ethylene in the presence of aqueous NaCl solution.

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Br CH2CH2Br

Br CH2CH2Cl

ClCH2 CH2Cl

ClCH2CH2Cl

In their ionic compounds halogens exhinit the oxidation states of.

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-1

-2

-3

-4

Monomer of Nylon -6 is

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Adipic acid

Hexamethylenediamine

Caprolactam

All of these

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