Question # 1

D-block consists of:

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4th,5th & 6th periods

2nd, 3rd & 4th periods

1st, 2nd, & 3rd periods

The atomic radil of the elements in periodic table:

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increase form left to right in period

increase form top to bottom

do not change form left to right in period

decrease form top to bottom in a group

If the solute-solute forces are strong enough than those of solute- solvent force, The solute:

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dissolves readily

does not dissolve

dissolve slowly

dissolves and precipitates

PCL5 is ________________ shaped.

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Bipyromidal

Angular

Triangular

Linear

Electrolyte is ____________ solid form.

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in

Sometimes in

Never in

Always in

The no. of Ion pair/pairs in ammonia molecule is / are

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1

2

3

4

The core of the earth is mostly made from ____________

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Nickel

Iron

A % B

Copper

____________ used to remove nail polish.

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Acetyline

Acetone

H2O

Nil

The mathematical formula of Charle's law is:

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PV = k

V/T = k

P = VT

T/V = k

Mist is an example of solution:

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liquid in gas

gas in liquid

solid gas

gas in solid

In double covalent bond, every atom provides

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1 electrons

2 electrons

4 electrons

6 electrons

Pure alkali metals can be cut simply by knife but iron cannot because of alkali metals have:

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Strong metallic bonding.

Weak metallic bonding

Non- metallic bonding

Moderate metallic bonding

_________ which occupies space and have mass.

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Matter

Atom

Molecule

All of above

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