Question # 1

Metals from a ____________ part of earth on which we live.

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Smaller

Larger

Medium

Nil

A _________ is a pure substance is made up of two or more elements.

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Mixture

Elements

Solution

Compound

The fundamental unit of elements is ___________

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Molecule

Atom

Matter

Mixture

Scientist used ___________ method.

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Scientific

Non-scientific

Bot

Non

Which one is moderate reactive metal?

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Pb

Na

Ca

Mg

In ionic bond complete ________________ of electrons occurs.

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Paring

Sharing

Transfer

None

Concentration is ratio of:

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solvent to solute

solute to solution

solvent to solution

both a and b

Oxidation means

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Gain of oxygen

Removal of oxygen

Gain of hydrogen

Gain of electrons

The earth is made up of ____________ % of aluminum.

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6

7

8

9

Air is an example of:

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Gas in gas

Solid in gas

Liquid in gas

Gas in ;iquid

Which of the following result in discovery of proton?

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cathode rays

canal rays

x-rays

alpha rays

Which one is not a property of electrolytic cell?

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It consists of one complete cell

Anode has +ve charge

It converts electrical energy into chemical one

Anode has -ve charge

Mark the incorrect statement about ionization energy:

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it is measured in Kjmol^-1

it is absorption of energy

it decreases in period

it decreases in a group

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