Question # 1

Mass no is represented by :

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A

B

C

D

The branch of chemistry which deals with inter conversion of electrical & chemical energy is:

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Biochemistry

Electrochemistry

Organic chemistry

None of these

Following are elements of 2nd period.Which atom is bigger in size?

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Li

Be

B

C

Molarity is the number of moles of solute dissolved in:

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1 kg of solution

100 g of slovent

Idm³ of solvent

I dm³ of solution

Diamonds is ____________

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Soft

Hard

Bulky

Nil

Number of protons+ neutrons is :

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Atomic mass

Mass numbers

Both

Nil

In double covalent bond, every atom provides

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1 electrons

2 electrons

4 electrons

6 electrons

The number of electrons in K shell of O is ________________

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9

10

2

1

Metals are ________________

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Liquid

Solid

Gas

Malleable

An ________________ scientist arranged the elements in order in periodic table.

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English

Italian

African

Indian

Group runs from ________________

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Top to bottom

Left to right

Top to right

Bottom to left

The lowest energy level is

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K

L

M

N

Which shows Tyndall Effect?

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Slution

Colloid

Suspension

True solution

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