Question # 1

Which of the following contains oxalic acid

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Orange

Sour Milk

Tomato

Tamarind

Number of protons in the nucleus of an atom is called.

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Atomic number

Mass Number

Mass Unit

Electron Number

According to Rutherford's atomic theory, atom should produce.

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Line spectrum

Continuous spectrum

Both a and b

None of these

Attaining two electrons in the valence shell is called.

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Octet rule

Duplet rule

Triplet rule

All of these

Water has high boiling point as compared a alcohol due to

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Low density

High surface tension

Hydrogen bonding

High vapour pressure

A good example of homogeneious mixture is.

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Soil

Ice-Creem

Rock

Wood

Atomic number is represented by

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P

A

At

Z

The horizontal lines present in the priodic table are called.

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Groups

Periods

Both a and b

None of these

Nitrogen molecule contains.

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Polar covalent bond

Triple Covalent bond

Double covalent bond

Single covalent bond

How many electrons can nitrogen accept in its outermost shell.

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2

3

4

5

What mass of 95% CaCO3 will be requred to neutralize 50 cm 3 of 0.5 M HCl solution.

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9.5 g

1.45 g

1.32 g

1.25 g

Which branch of chemistry deals with elements and compounds is earth's crust.

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Polymer chemistry

Organic chemistry

Geochemistry

Physical chemistry

Caustic chemical drain cleaner are captable of dissolving.

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Hair

Food

Grease

All of these

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