Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>EXERCISE>Q 21

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Earn 100

If $500 mL$ of $1 M$ solution of glucose is mixed with $500 mL$ of $1 M$ solution of glucose final molarity of solution will be:

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Important Questions on Mole Concept - 1

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KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>EXERCISE>Q 22

The volume of water that must be added to a mixture of

250 ml

of

0.6 M HCl

and

750 ml

of

0.2 M HCl

to obtain

0.25 M

solution of

HCl

is:

HARD

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>EXERCISE>Q 23

What volume of

0.10 M H_{2} {SO}_{4}

must be added to

50 mL

of a

0.10 M NaOH

solution to make a solution in which the molarity of the

H_{2} {SO}_{4},

is

0.050 M

?

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KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>EXERCISE>Q 24

What approximate volume of

0.40 M Ba (OH)_{2}

must be added to

50.0 mL

of

0.30 M NaOH

to get a solution in which the molarity of the

{OH}^{-}

ions is

0.50 M

?

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>EXERCISE>Q 25

Mole fraction of

A

in

H_{2} O

is

0.2

. The molarity of

A

in

H_{2} O

is:

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>EXERCISE>Q 26

What is the molarity of

H_{2} {SO}_{4}

solution that has a density of

1.84 g / cc

and contains

98 %

by mass of

H_{2} {SO}_{4}

?

(

Given atomic mass of

S = 32)

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>EXERCISE>Q 27

The molarity of the solution containing

2.8 %

(mass / volume) solution of

KOH

is : (Given atomic mass of

K = 39

) is :

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>EXERCISE>Q 28

Four

1 - 1

litre flasks are separately filled with the gases

H_{2}, He, O_{2}

and

O_{3}

at the same temperature and pressure. The ratio of total number of atoms of these gases present in different flask would be:

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>EXERCISE>Q 29

Which of the following expressions is correct

(n =

number of moles of the gas,

N_{A} =

Avogadro constant,

m =

mass of

1

molecule of the gas,

N =

number of molecules of the gas

)

?