Question # 1

The other name of modern periodic table is ________________ of periodic table.

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Long form

Simplified

Simplest

Nil

Gases produced in Nelson's cell are:

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H₂ and O₂

H₂ and CI₂

H₂ and N₂

CI₂ and O₂

Alpha particles are double charged.

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Negative

Positive

Can be both

Nil

________________ solids are hard.

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Ionic

Covalent

Coordinate

Nil

________________ in linear in shape.

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CO+

CO2

H2O

NH3

The colour of calcium metal flame is

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Golden yellow

Brilliant white

Brick red

Light green

H8+ _ Cl8- , the charge on H is.

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_

+

Neutral

Nil

Which one an example of heterogeneous mixture?

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Ice cream

Concrete

Both a & b

NiL

Gold can only be dissolved by:

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Acids

Bases

Aqua Regia

Nil

The core of the earth is mostly made from ____________

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Nickel

Iron

A % B

Copper

Mist is an example of solution:

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liquid in gas

gas in liquid

solid gas

gas in solid

H° + H° are ________________ in energy.

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Lower

Higher

Medium

Nil

In the redox reaction between zn and HCI. the oxidizing agent is:

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zn

H⁺

C

H²

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