Question # 1

Infrared radiations emitted by the Earth are absorbed by.

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CO₂ and H₂O

N₂ and O₂

CO₂and N₂

O₂and CO₂

The dynamic equilibrium in irreversible reaction.

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Never establishes

Establishes after completion of reaction

Establishes before completion of reaction

Establishes very soon

Cause of diarrhoea among following is:

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Diarrhea

Cholera

Cryptosporidium

Typhoid

Which gas is used to manufacture king of chemicals sulphuric acid?

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N₂

O₂

Cl₂

S

Acetic acid is a weak acid because it.

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Is used in cooking and flavouring food.

Has very low pH

Is not fully ionized

Does not contain any hydrogen ions.

Word "acid" derived from:

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Urdu

English

Latin

Greek

Water dissolves Non-ionic compounds by:

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Ion-Ion forces

Dipole forces

Dipole - Dipole forces

Hydrogen Bonding

Sodium carbonate is manufactured by.

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Haber's process

Ostwald's process

Solvay's process

All

Acids turn

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Blue litmus red

Red litmus blue

Blue litmus green

Blue litmus blue

Specific Heat capacity of water is about.

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4.0 Jg^-1 K^-1

4.1 Jg^-1K^-1

4.2 Jg^-1K^-1

4.3 Jg^-1K^-1

Chemical form of gypsum.

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MgSO₄. 5H₂O

CaSO₄. 2H₂O

FeSO₄. 5H₂O

CuSO₄. 5H₂O

Glucose is:

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Hexabydroxy aldehyde

Hexahydroxy ketone

Polyhydroxy aldehyde

Pentahydroxy ketone.

Benzene is formed by the polymerization of.

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Alkene

Alkane

Acetylene

Methane.

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