Question # 1

Water molecule had a structure;

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non-polar

polar

ionic

tetrahedral

Which one of the mineral acid.

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HCl

H₂SO₄

HNO₃

All of these

Who was prepared acetic acid in laboratory?

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Berzelius

Wohler

Kolbe

Dalton

Some organic compound are soluble in water due to the presence of .

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-OH

H⁺

Botha a and b

Covalent bond

Which one of the followoing is the Hardest coal.

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Peat

Lignite

Bituminous

Anthracite

Global warming is because of.

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Absorption of infrared radiation emitted by earth surface.

Absorption of infrared radiation coming from sun.

Absorption of infrared Ultraviolet coming from the sun.

Emission of ultraviolet radiation from the earth's surface.

The strong heating of coal in the absence of air is called.

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Carbonization

Destructive distillation

Fractional distillation

All

Latin word 'Acidus' means:

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sweet

salty

sour

bitter

What is pOH of 0.01 M solution of KOH?

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3

11

2

4

Vibrious cholera bacteria causes the disease

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Cholera

Diarrhea

Jaundice

Hepatitis

The percentage by volume of nitrogen in dry gas is.

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78.09%

20.94%

0.93%

0.03%

The general formula of carbohydrate is:

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C2n(H2O)

CN(H2O)n

Cn(H2O)2n

C2n(H2O)n

Carbohydrates are synthesized by plants through photosynthesis process which requires the following except.

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CO₂ and water.

Sunlight

O₂

Chlorophyll

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