Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 48

EASY

Chemistry

IMPORTANT

Earn 100

$5.6 litres$ of oxygen at $NTP$ is equivalent to:

50% studentsanswered this correctly

Important Questions on Mole Concept

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Chemistry

IMPORTANT

Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 49

A gaseous mixture contains

{CO}_{2} (g)

and

N_{2} O (g)

in

2 : 5

ratio by mass. The ratio of the number of molecules of

{CO}_{2} (g)

and

N_{2} O (g)

is:

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Chemistry

IMPORTANT

Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 50

A sample of aluminium has a mass of

54.0 g

. What is the mass of the same number of magnesium atoms? (atomic weight of

Al = 27, Mg = 24)

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Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 51

Vapour density of a gas if its density is

0.178 g / L

at

NTP

is:

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IMPORTANT

Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 52

A nugget of gold and quartz was found to contain

' x' g

of gold and

' y' g

of quartz and has density

d

. If the densities of gold and quartz are

d_{1}

and

d_{2}

, respectively then the correct relation is:

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Chemistry

IMPORTANT

Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 53

The atomic weights of two elements

A

and

B

are

40

and

80

, respectively. If

' x' g

of

A

contains

y

atoms, how many atoms are present in

' 2 x' g

of

B

?

EASY

Chemistry

IMPORTANT

Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 54

The weight of

112 mL

of

{SO}_{2}

gas at

STP

on liquefaction would be:

EASY

Chemistry

IMPORTANT

Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 55

The equation $2 Al (s) + \frac{3}{2} O_{2} (g) ⟶ {Al}_{2} O_{3} (s)$ shows that:

EASY

Chemistry

IMPORTANT

Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 56

Methyl

- t -

butyl ether,

C_{5} H_{12} O

, is added to gasoline to promote cleaner burning. How many moles of oxygen gas (

O_{2}

) are required to burn

1.0 mol

of this compound completely to form carbon dioxide and water?