Question # 1

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

It is heterogeneous mixture

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Sand

Milk

Air

Brass

Brine is an aqueous solution of

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NaCI

NaOH

AgNO3

CaO

Atoms reacts with each other because:

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They are attracted to each other

they are short of electrons

they want to attain stability

they want to disperse

The mixture of two component is called .

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Homogeneous mixture

Binary solution

Both a & b

Nil

Considering the electronic configuration of atoms which atom with the given atomic number will be the most stable one?

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6

8

10

12

In isotopes numbers of ________________ is same.

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Protons

Electrons

Neutrons

Mass number

The cathode of Nelson's cell is made up of

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C

Zn

Cu

Fe

Which one is least reactive non-metal?

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P

C

CI

F

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

Elements are represented by chemical _________

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Abbreviation

Unit

Symbols

It can be represented

The empirical formula of glucose is

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CHO

CH2O

C2HO

CHO2

The core of the earth is mostly made from ____________

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Nickel

Iron

A % B

Copper

Neuron was discovered by

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Sir Willium Crooks

Goldstein

James Chadwik

Neil Bohr

Na__ Na++ e , what type of ionit is :

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Positive

Negative

Neutral

Charged

____________ Metals are electronegative in nature.

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Pure-

Noble-

Non-

Nil

Which is an acceptor molecule/ion?

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N₂

O₂

H⁺

CH₄

"Atoms" means _________

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Divisible

Indivisible

Break

Nil

____________ agents gains electrons in chemical reaction.

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Reduction

Oxidation

Both

None of these

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