Question # 1

Which is Pentahydroxy aldehydes of the following?

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Starch

Glucose

Fructose

Sucrose

Lipids are macromolecules made up of.

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Fetty acids

Amino acids

Nucleotides

None of them

Concentration is a separating technique in which mineral is separated from.

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Gangue

Silicates

Aluminates

All

The envelope of different gases around the earth is called.

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Atmosphere

Brosphere

Lithosphere

Hydrosphere

Temporary hardness is because of.

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Ca(HCO₃)₂

CaCO₃

MgCO₃

MgSO₄

Glucose is:

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Hexabydroxy aldehyde

Hexahydroxy ketone

Polyhydroxy aldehyde

Pentahydroxy ketone.

conjugate base of HCl is:

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HCl^-

CH

Cl

NH₃

A reaction between an acid and base produce.

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Salt and water

Salt and gas

Salt and acid

Salt and bases

Temporary hardness of water is removed by adding.

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Ca(OH)₂

NaOH

KOH

CaSO₄

Amino acid are linked to each other through.

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Hydrogen link

Ionic link

Gelatin link

Peptide link

The smell of photocopies machine is due to the presence of.

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Chlorine gas

Neon gas

Helium gas

Ozone gas.

Temporary hardness in water can he removed by.

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Boiling Method

Using washing soda

Using sodium zeolite

All of them

Atmosphere has regions.

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One

Two

Three

Four

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