Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>Let us answer these:>Q 1

MEDIUM

9th Manipur Board

IMPORTANT

Earn 100

Write down the formula of Calcium hydroxide.

Important Questions on Symbols, Formulas and Equations

HARD

9th Manipur Board

IMPORTANT

Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>Let us answer these:>Q 1

Write down the formula for Aluminium sulphate.

HARD

9th Manipur Board

IMPORTANT

Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>Let us answer these:>Q 1

Write down the formula for iron(II) carbonate.

MEDIUM

9th Manipur Board

IMPORTANT

Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>Let us answer these:>Q 2

Name the following compounds.

$Cu {(OH)}_{2}, FeS, {Mg}_{3} {({PO}_{4})}_{2}, {AgNO}_{3}, {PbCO}_{3}, {HgBr}_{2}$

MEDIUM

9th Manipur Board

IMPORTANT

Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>Let us answer these>Q 3

How many atoms are present in

{Al}_{2} {({SO}_{4})}_{3}

molecule?

MEDIUM

9th Manipur Board

IMPORTANT

Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>Let us answer these>Q 3

How many atoms are present in a

{({CO}_{3})}^{2 -}

ion?

MEDIUM

9th Manipur Board

IMPORTANT

Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>Let us answer these:>Q 1

Calculate the molecular masses of

C l_{2}, C O_{2}, C H_{4}, N H_{3}, C_{2} H_{6}

.

HARD

9th Manipur Board

IMPORTANT

Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>Let us answer these:>Q 2

Calculate the formula unit masses of

CaO, K_{2} {CO}_{3}, {NaHCO}_{3}, H_{2} {SO}_{4}

.

HARD

9th Manipur Board

IMPORTANT

Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>Let us answer these:>Q 3

Calculate the gram molecular mass of

{Al}_{2} {({SO}_{4})}_{3}

. (Atomic mass of

Al = 27, S = 32

)