Question # 1

In 9th century scientist accepted by:

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Dalton

Bohars

Rutherford

Nil

The symbol of sodium is :

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Sa

Na

Pa

Ca

____________ cell is made of two half of cells.

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Zinc cell

Galvanic

Both

All

All metals are solid except

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AI

Mg

Na

Hg

How many numbers of moles are equivalent to 8 grams of CO₂?

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0.15

0.18

0.21

0.24

There are ____________ states of matter

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4

3

2

1

Considering the electronic configuration of atoms which atom with the given atomic number will be the most stable one?

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6

8

10

12

Transfer of electrons between atoms results in:

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metallic bonding

ionic bonding

covalent bonding

coordinate covalent bonding

________________ observed that formation of covalent bonds.

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Rutherford

G.N Lewis

Both a and b

Bohar's

A solution whose molarity is known is called:

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Dilute solution

Concentrated solution

Saturated solution

Molar solution

The lowest energy level is

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K

L

M

N

In diamonds, carbon are ____________ bonded.

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Tetrahedrally

Single

Double

None

Hydrogen has ________________ isotopes.

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1

2

3

4

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