Question # 1

Tyndall effect is shown by:

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sugar solution

paints

jelly

chalk solution

Long form of periodic Table is constructed the basis of:

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Mendeleev postulate

atomic number

atomic mass

mass number

4th & 5th consist of ________________ elements.

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8

18

32

infinite

The most abundant element occurring in the oceans is:

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Oxygen

Hydrogen

Nitrogen

Silicon

In ________________ Bohr considered hydrogen atom for his model .

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1913

1916

1917

1918

Bronze (alloy) is a ____________

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Slolution

Mixture

a & b

Nil

_________ which occupies space and have mass.

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Matter

Atom

Molecule

All of above

Ionic compound are ________________ in water.

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insoluble

Soluble

Covalent

Solvent

Diamonds is ____________

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Soft

Hard

Bulky

Nil

The reaction of ionic compound is very ________________ in solution.

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Slow

Fast

Medium

Nil

Which one of the following is heterogeneous mixture?

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milk

ink

milk of magnesia

sugar solution

The atomic number of potassium is:

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11

15

18

19

Atoms as a whole is _________

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+

_

No

Neutral

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