Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.3>Q 12

EASY

JEE Main

IMPORTANT

Earn 100

The vapour density of a gas $A$ is twice the vapour density of a gas $B$ . If the molecular weight of $B$ is $M$ , what will be the molecular weight of $A$ ?

50% studentsanswered this correctly

Important Questions on Some Basic Concepts, Mole Concept and Stoichiometry

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.3>Q 13

The atomic weight 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

?

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.3>Q 14

Which of the following statements are correct about

1.7 g

of

{NH}_{3}

?

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.3>Q 15

Which of the following has the same percentage of carbon as in ethene?

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.3>Q 16

2.0 g

of a tri-atomic gaseous element was found to occupy a volume of

448 mL

at

76 cm

of

Hg

and

273 K

. Then, what is the mass of its atom?

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.3>Q 17

You have given $4.25 g {NH}_{3} (g)$ .

Given: Atomic weight of $N - 14; H - 1$

Find out which of the following statements are correct regarding above ${NH}_{3}$ ?

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.3>Q 18

Which of the following contains same number of molecules?

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.3>Q 19

For

3 mole

of ammonia gas, which of the following is true?

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.4>Q 1

A compound which contains one atom of

X

and two atoms of

Y

for each three atoms of

Z

, is made by mixing

5.00 g

of

X

,

1.15 \times 10^{23}

atoms of

Y

and

0.03 mole

of

Z

atoms. Given that only

40 g

of compound results, calculate the atomic weight of

Y

, if the atomic weight of

X

and

Z

are

60

and

80 amu

, respectively.