Question # 1

Gain of electrons in a reaction is called ____________reaction.

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Oxidation

Reduction

Both

Nil

________________ are formed from chemical reactions.

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Elements

Mixture

Substance

Nil

Which one of the following is a galvanic cell?

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Daniel cell

Nelson's cell

Down's cell

Both B and C

The atomic number is represented by ____________

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A

Y

X

Z

Which is an acceptor molecule/ion?

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N₂

O₂

H⁺

CH₄

Transition temperature of sulphur is ____________

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95.6

95

95.5

96

Mist is an example of solution:

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liquid in gas

gas in liquid

solid gas

gas in solid

Smoke in air is the example of solution.

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Gas in Gas

Gas in liquid

liquid in Gas

Solid in Gas

The vapour pressure of a liquid increase with the:

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increase pressure

increase of temperature

increase of intermolecular forces

increase of polarity of molecules

Which has lowest density?

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liquids

Solids

Gases

Plasma

The p subshell has:

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one orbital

two orbitals

three orbitals

four orbitals

In ________________ Rutherford's was studying radiations.

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1911

1931

1921

1922

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