LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>EXERCISES>Q 6

EASY

9th CBSE

IMPORTANT

Earn 100

Give the atomicity of ${SO}_{3}$ .

Important Questions on Atoms and Molecules

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>EXERCISES>Q 6

Give the atomicity of

{PH}_{3}

.

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>EXERCISES>Q 7

A compound's chemical formula is ${Ni}_{2} O_{3}$ . Name the elements present in the compound. Name the compound represented by the formula. What is the valency of $Ni$ in this compound?

HARD

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>EXERCISES>Q 8

The formula of nickel(

II

) nitrate is

Ni ({NO}_{3})_{x}

. The value of

x

is? (Give the answer in numeral)

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>EXERCISES>Q 8

Give the correct formula of zinc carbonate.

A. $ZnCO$

B. ${ZnCO}_{3}$

C. $Zn {({CO}_{3})}_{2}$

"Enter your correct answer as A, B or C."

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>EXERCISES>Q 8

The formula of aluminium sulphate is

{Al}_{2} ({SO}_{4})_{k}

. Here, the value of

k

is

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>EXERCISES>Q 9

Calculate the molecular mass of

H_{2} {SO}_{4}

and

H_{3} {PO}_{4}

.

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>EXERCISES>Q 10

How will you calculate mass percentage of an element?

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>EXERCISES>Q 11

Give the values of molecular mass of

{CO}_{2}

and gram-molecular mass of

{CO}_{2}

.