Practice Book for KVPY Aptitude Test - Stream SA Chemistry>Chapter 1 - Mole Concept - 1>KVPY PROBLEMS (PREVIOUS YEARS)>Q 23

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KVPY Aptitude Test - Stream SA

IMPORTANT

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When $22.4 L$ of $C_{4} H_{8}$ at $STP$ is burnt completely, $89.6 L$ of ${CO}_{2}$ gas at $STP$ and $72 g$ of water are produced. The volume of the oxygen gas at $STP$ consumed in the reaction is the closest to:

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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>KVPY PROBLEMS (PREVIOUS YEARS)>Q 24

One mole of the sodium salts listed below, having carbon content close to

14.3 %

, produces

1

mole of carbon dioxide upon heating

(

Atomic mass

Na = 23, H = 1, C = 12, O = 16)

. The salt is:

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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 25

LiOH

reacts with

{CO}_{2}

to form

{Li}_{2} {CO}_{3}

(

Atomic mass of

Li =7)

. The amount of

{CO}_{2}

(in

g

) consumed by

1 g

of

LiOH

is the closest to

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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 26

The oxidation number of sulphur is

+ 4

in

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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 27

A redox reaction among the following is:

(i) ${CdCl}_{2} + 2 KOH \to Cd (OH)_{2} + 2 KCl$

(ii) ${BaCl}_{2} + K_{2} {SO}_{4} \to {BaSO}_{4} + 2 KCI$

(iii) ${CaCO}_{3} \to CaO + {CO}_{2}$

(iv) $2 Ca + O_{2} \to 2 CaO$

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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 28

The amount (in

mol

) of bromoform

({CHBr}_{3})

produced when

1.0 mol

of acetone reacts completely with

1.0 mol

of bromine in the presence of aqueous

NaOH

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 29

The number of water molecules in

250 mL

of water is closest to [Given: Density of water is

1.0 g {mL}^{- 1};

Avogadro's number

= 6.023 \times 10^{23}

]