Question # 1

Monosaccharides are crystalline solids

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Grey

Crimson

Silver

White

On which base atmosphere is divided into four regions?

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Change in pressure

Change in rediation

Change in temperature

Change in volume

Which one of the following statements about glucose and sucrose is incorrect.

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Soluble in water

Naturally occuring.

Carbohydrates

Disaccharides

The region of ozone decomposition in stratosphere is.

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20 km

30 km

40 km

50 km

Which of the following gas is used to destroy harmful bacteria in water.

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Iodine

Chlorine

fluorine

Bromine

Normal rain water is:

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weakly acidic

strongly acidic

weakly basic

strongly basic

A salt is not composed of

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A metallic cation

Non -metallic anion

an anion of a base

An anion of an acid

The process by which atmospheric nitrogen is turned into nitrates in the soil is called.

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Nitration

Fixing

Oxidation

Reduction

Sindh alkalies limited was established near Karachi in.

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1965

1966

1970

2000

Boiling point of water is:

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0^oC

25^oC

80^oC

100^oC

The black residue of the coal tar is called:

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peat

lignite

pitch

matte

Which one is not an Arrhenius base?

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NaOH

KOH

Ca(OH)₂

NH₃

Which one of the following cannot by hydrolyzed?

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Polysacchrides

Monosacchrides

Oligosacchrides

All of these

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