Question # 1

Which one of the following is the most penetrating?

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protons

electrons

neutrons

alpha paticles

The reaction of ionic compound is very ________________ in solution.

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Slow

Fast

Medium

Nil

1 torr = ?

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1 mm of Hg

1 atm

760 mm of Hg

1 pascal

The component of solution in larger amount is .

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Solute

Solvent

A & B

nIL

Free radical is a

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Extremely stable

Extremely reactive

Extremely inert

All of these

............. are sonorous.

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Metals

Solids

Metals

Force

Solid particles possess which one of the following motions?

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rotational motions

vibrational motions

translation motions

both translational and vibrational motions

All non-metals are non-conductor of heat and electricity except it

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Phosphorous

Sulphur

Graphite

Iodine

10 gram sugar is dissolved in 90 gram of water to make a 100 gram solution.This solution is

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10% m/m

10% m/v

10% v/m

10% v/v

The atomic number of sodium is ............... .

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9

10

11

12

The forces of attraction present between the molecules of a substance are called ____________ forces.

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Intermolecular forces

Covalent

Ionic

Nil

Modern periodic table can be classified into ________________.

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Elements

s, p, d, f blocks

Periods

ROWS

The most abundant element occurring in the oceans is:

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Oxygen

Hydrogen

Nitrogen

Silicon

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