Question # 1

White marble buildings are effected by?

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O₂

SO₂

CI₂

CFC_s

As gases can adopt the shape of the container. Therefore gases have:

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different shapes

fixed shapes

no fixed shapes

definite shapes

Fungicides re the pesticides which:

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kill plants

kill herbs

kill insects

control the growth of fungus

Intermolecular forces are _________ than binding forces

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stronger

Equal

Weaker

None

Amino acids which contain two amino groups are called

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Acidic amino acids

Basic amino acids

Neutral amino acids

Amphoteric amino acids

Ozone is a gas having boiling point

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Unstable

High

Low

Moderate

A single chlorine free radical can destroy how many ozone molecules

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100

100000

10000

10

The words smog is a combination of smoke and:

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fog

foke

fork

fizzy

Solid waster of the city is disposed off by dumping in a landfill. Which of the following gas is produced in the landfill

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Oxygen

Chlorine

Hydrogen sulphide

Hydrogen chloride gas

1-chloropropane and 2.chlorpropane are isomers of each other, the type of isomerism in these two is called

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Cis-trans isomerisn

Position isomerism

Chain isomerism

Functional group isomerism

Air pollution causes

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Acid rain

O₃ depletion

Green House Effect

All

The cell in which a non-spontaneous redox reaction takes place as a result electricity is known as :

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Electrolytic cell.

Voltaic cell.

Daniel cell.

Dry cell.

The tendency of atoms to attain a maximum of eight electrons in the valence shell is known as:

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Duplet rule.

Triad rule.

Octet rule.

Tetrade rule.

Which is not property in ether:

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Very weak hydogen bonding

High b.p

Slightly soluble

Inflammable

Al³⁺is a symbol for aluminium

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Atom

Ion

Cation

Anion

Selection of filter paper depends upon sizes of particles to be:

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Tested

^Filtered

Checked

All of above

When sulphur is boiled with Na₂SO₃solution, the compound formed is

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Sodium sulphides

Sodiums sulphates

Sodium persulphate

Sodium thiosulphate

The oxides of electronegative elements are

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Basic

neutral

Acidic

Amphoteric

The elements in which d or f-orbitals are incomplete are called

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Transition elements

Typical elements

Actinides

lanthanides

Catenation is a process in which carbon shows the properties of making

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Multiple bonds

Hybridization

Long chains or rings of carbon atom

Showing isomerism

Which of the following compounds contains the highest percentage by mass of nitrogen?

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Ammonia, NH₃

Ammonium carbamate, NH₂CO₂NH₄

Ammonium carbonate, (NH₄)₂CO₃

Hydrazine, N₂H₄

Which gasses are produced from landfills

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NH₃

H₂S

N₂

All of these

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