One mole of nitrogen gas on reaction with 3 . 01 × 10 23 molecules of hydrogen gas produces -

2 . 0 × 10 23 molecules of ammonia

3 . 01 × 10 23 molecules of ammonia

MEDIUM

KVPY Aptitude Test - Stream SA

IMPORTANT

Earn 100

$4$ mole of ${MgCO}_{3}$ is reacted with $6$ moles of $HCl$ solution. Find the volume of ${CO}_{2}$ gas produced at $STP,$ the reaction is : ${MgCO}_{3} + 2 HCl \to {MgCl}_{2} + {CO}_{2} + H_{2} O$

Important Questions on Mole Concept - 1

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>EXERCISE>Q 50

117 gm NaCl

is dissolved in

500 mL

aqueous solution. Find the molarity of the solution.

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>KVPY PROBLEMS (PREVIOUS YEARS)>Q 1

Mass of a liquid is weighed correct to three decimal place and its volume is measured correct to one decimal place. The density of the liquid calculated from the above data will be correct to:

EASY

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IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>KVPY PROBLEMS (PREVIOUS YEARS)>Q 2

3.01 \times 10^{23}

molecules of elemental sulphur will react with

0.5

mole of oxygen gas completely to produce:

EASY

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IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>KVPY PROBLEMS (PREVIOUS YEARS)>Q 3

The density of a salt solution is

1.13 g {cm}^{- 3}

and it contains

18 %

NaCl

by weight. The volume of the solution containing

36 g

of salt will be:

MEDIUM

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>KVPY PROBLEMS (PREVIOUS YEARS)>Q 4

10 g

of a crystalline metal sulphate salt when heated generates approximately

6.4 g

of an anhydrous salt of the same metal. The molecular weight of the anhydrous salt is

160 g

. The number of water molecules present in the crystal is:

MEDIUM

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>KVPY PROBLEMS (PREVIOUS YEARS)>Q 5

One mole of nitrogen gas on reaction with

3.01 \times 10^{23}

molecules of hydrogen gas produces -

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>KVPY PROBLEMS (PREVIOUS YEARS)>Q 6

10 ml

of an aqueous solution containing

222 mg

of calcium chloride (molecular weight

= 111

) is diluted to

100 ml

. The concentration of chloride ion in the resulting solution is:

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>KVPY PROBLEMS (PREVIOUS YEARS)>Q 7

Aluminium reduces manganese dioxide to manganese at high temperature. The amount of aluminium required to reduce one gram mole of manganese dioxide is -

4 mole of MgCO3 is reacted with 6 moles of HCl solution. Find the volume of CO2 gas produced at STP, the reaction is : MgCO3+2HCl→MgCl2+CO2+H2O

Important Questions on Mole Concept - 1

Learn and Prepare for any exam you want !

$4$ mole of ${MgCO}_{3}$ is reacted with $6$ moles of $HCl$ solution. Find the volume of ${CO}_{2}$ gas produced at $STP,$ the reaction is : ${MgCO}_{3} + 2 HCl \to {MgCl}_{2} + {CO}_{2} + H_{2} O$