Question # 1

The earth is made up of ____________ % of aluminum.

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6

7

8

9

___________ is used in treatment of cancer.

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Cobalt-60

C-12

H-3

Nil

One mole of sodium = ______ .

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24 g

25 g

26 g

23 g

When U-235 breaks up, it produces?

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electrons

neutrons

protons

nothing

The most abundant element occurring in the oceans is:

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Oxygen

Hydrogen

Nitrogen

Silicon

Oxygen is ___________

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Metals

Non-metals

Gas

b & c

_________ which occupies space and have mass.

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Matter

Atom

Molecule

All of above

Air is an example of:

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Gas in gas

Solid in gas

Liquid in gas

Gas in ;iquid

Which one of the following is liquid in solid solution?

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sugar in water

butter

opal

fog

_________ can be separated by physical means.

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Mixture

Compound

Solution

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

Which one is least reactive non-metal?

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P

C

CI

F

All ionic compound are ________________ at room temperature.

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Liquid

Solids

Gas

Plasma

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