Chemistry Crash Course JEE Main>Chapter 23 - Some Basic Concepts of Chemistry>Level 1>Q 37

MEDIUM

JEE Main

IMPORTANT

Earn 100

Which of the following samples will have the same volume under similar conditions of temperature and pressure?

$a .$ $64 g {SO}_{2}$

$b .$ $4 g He$

$c .$ $16 g O_{2}$

$d .$ $6.023 \times 10^{23}$ molecules of $N_{2}$ .

30% studentsanswered this correctly

Important Questions on Some Basic Concepts of Chemistry

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 23 - Some Basic Concepts of Chemistry>Level 1>Q 38

The number of atoms in $3.2 g$ of oxygen gas is

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 23 - Some Basic Concepts of Chemistry>Level 1>Q 39

The charge on

1

gram-ion of

{Al}^{3 +}

is

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 23 - Some Basic Concepts of Chemistry>Level 1>Q 40

How many moles of magnesium phosphate

{Mg}_{3} ({PO}_{4})_{2}

will contain

0.25

mole of oxygen atoms?

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 23 - Some Basic Concepts of Chemistry>Level 1>Q 41

What volume of hydrogen gas will be consumed at

273 K

and

1 atm

pressure to obtain

21.6 g

of elemental boron (atomic mass

= 10.8

) from the reduction of boron trichloride with hydrogen?

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 23 - Some Basic Concepts of Chemistry>Level 1>Q 42

Calculate the amount of $H_{2}$ which is left unreacted in the given reaction:

$2 H_{2} + O_{2} \to 2 H_{2} O$

if $8 g$ of $H_{2}$ is mixed with $16 g O_{2}$ ?

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 23 - Some Basic Concepts of Chemistry>Level 1>Q 43

Mole fraction of

A

in

H_{2} O

is

0.2

. The molality of

A

in

H_{2} O

is?

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 23 - Some Basic Concepts of Chemistry>Level 1>Q 44

If the compound contains

7 %

sodium,

12.8 %

nitrogen and

9.8 %

sulphur by weight, how many nitrogen and sulphur atoms are present per atom of sodium?

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 23 - Some Basic Concepts of Chemistry>Level 1>Q 45

The density of

2.05 M

solution of acetic acid in water is

1.02 \frac{g}{mL}

. What is the molality of the solution?