Question # 1

All of the following are tri-atomic molecules except:

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H²

O³

H²O

CO²

P1V1 = P2V2 is mathematical form of ____________ law.

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Bohr's

Charles

Boyle's

Nil

................. can be decomposed into simpler substanmce.

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Compound

Element

Solution

Mixture

Salt & water is a _________ mixture.

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Homogeneous

Heterogeneous

It is not mixture

Nil

At freezing point which one of the following coexists in dynamic equilibrium?

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gas and solid

liquid and gas

liquid and solid

all of these

Which of the following is less malleable?

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Sodium

Iron

Gold

Sliver

Industrial chemistry deals with the manufacturing of compounds:

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in the laboratory

on micro scale

on commercial scale

on economic scale

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

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Long form

Simplified

Simplest

Nil

The fundamental unit of elements is ___________

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Molecule

Atom

Matter

Mixture

The concept of orbit was used by:

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J.J Thomson

Rutherford

Bohr

Planck

The symbol of barium is:

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Ba

Bi

Br

B

Ionic compound are ________________ in water.

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insoluble

Soluble

Covalent

Solvent

________________ are formed from chemical reactions.

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Elements

Mixture

Substance

Nil

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