Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 1

EASY

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IMPORTANT

Earn 100

Number of atoms present in a molecule is called:

66.67% studentsanswered this correctly

Important Questions on Concept of Atomic, Molecular and Equivalent Masses

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NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 2

1 u

is equal to:

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IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 3

The statement which is wrong about gram atomic mass is:

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IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 4

Chlorine occurs in nature in the form of two isotopes with atomic mass

35

and

37

in the ratio of

3 : 1

, respectively. The average atomic mass of chlorine is:

EASY

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IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 5

If

M

is the molecular mass of

{KMnO}_{4}

, then equivalent weight of

{KMnO}_{4}

in acidic medium is:

EASY

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IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 6

What is the equivalent mass of

{KMnO}_{4}

when it change into

{Mn}_{2} {({SO}_{4})}_{3} ?

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IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 7

74 g

of a metallic chloride contains

35.5 g

of chlorine. The equivalent weight of the metal is

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IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 8

Approximate atomic weight of a metal is

26.89 .

If its equivalent weight is

8.9

, its exact atomic weight will be:

EASY

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IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 9

Potassium permanganate gives the following reactions in neutral ${MnO}_{4}^{-} + 2 H_{2} O + 3 e^{-} ⟶ {MnO}_{2} + 4 {OH}^{-}$ .

The equivalent weight of ${KMnO}_{4}$ is (atomic mass of $Mn = 55 u$ ):