Question # 1

The words smog is a combination of smoke and:

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fog

foke

fork

fizzy

The general electronic configuration of group IV-A elements is

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ns2, np6

ns2, np4

ns2, np3

ns2, np2

Covalent bonds are least likely to be formed:

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between atoms of the same element

between atoms of different elements on the right of the periodic table

by head of the group elements with high ionization energies

between an element in Group I and an element in Group Vll

Which of the following alcohol is more soluble in H2O

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Propanol

Butanol

Pentanol

Hexanol

The boding which covalent molecules containing hydrogen and one of the small electronegative element such as O, For Mis called:

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ionic bonding

bridge bonding

H-bonding

metalic bonding

The ideal gas law holds best under the conditions of

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high pressure and high temperature

low pressure and high temperature

low pressure and low temperature

high pressure and low temperature

Ozone is produced in regions:

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tropical

Polor

antaric

equator

Heat balance of earth is maintained by sphere:

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Hydrosphere

atmosphers

lithosphere

biosphere

The kinetic theory of gases predicts that total kinetic energy of a gaseous assembly depends on

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Pressure of the gas

Temperature of the gas

Volume of the gas

Pressure,temperature,and volume of the gas.

Which is an intermediate in SN1 reaction

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Ethoxide ion

Carbocation

alkyl halide

alkene

Dehydrohalogenation of secondary butyI bromide will give

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Propene

1-Butene

Butene

2-Butene

Compounds having same molecular formula but different structures are said to be

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Monomers

Isomers

Metamers

Tautomers

Substances that render enzymes catalytically inactive are called

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Conenzymes

Substrates

Inhibitors

Apoezymes

The hydrocarbon which is used as an illuminating agent

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Methane

Methene

Methyne

B & C

Maximum variable oxidation state is of:

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Mn⁺²

Fe⁺³

Cr⁺¹

a and b

One mole of SO₂contains

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6.02 x 10²³atoms of oxygen

18.1 x 10²³, molecules of SO₂

6.02 x 10²³atoms of sulphur

4 gram atoms of SO₂

Which one of the following reactions is not spontaneous

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Linear shape is associated with set of hybrid orbitals?

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sp

sp2

sp3

dsp2

Hypo is used in photography for

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Developing picture

Picture printed

The colour of picture

The fixation of picture

Soil salinity can be measured by

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Calorimeter

Potometer

Porometer

Conducitvity meter

On hydrolysis of starch, we finally get

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Glucose

Fructose

Both

Sucrose

Acidic hydrolysis of acetamide gives

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Acetaldehyde

Acetic acid

Methyl amine

Formic acid

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