MEDIUM
9th Manipur Board
IMPORTANT
Earn 100

Name the following compounds. Also, write the symbols/formulas of the ions present in them.

Na2SO4

Important Questions on Symbols, Formulas and Equations

MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>EXERCISES>Q 11

Name the following compounds. Also, write the symbols/formulas of the ions present in them.

NH4NO3
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>EXERCISES>Q 11

Name the following compounds. Also, write the symbols/formulas of the ions present in them.

Na2CO3

MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>EXERCISES>Q 11

Name the following compounds. Also, write the symbols/formulas of the ions present in them.

CaCl2

HARD
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>EXERCISES>Q 12
Calculate the formula unit masses of calcium chloride.
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>EXERCISES>Q 12
Calculate the formula unit masses of sodium hydrogen carbonate.
HARD
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>EXERCISES>Q 13

If the valency of carbon is 4 and that of sulphur is 2, work out the formula of the compound of carbon and sulphur. Name the compound.

MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>EXERCISES>Q 14
An element B shows valencies 2 and 3. Write the formula of its two oxides.
HARD
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 4 - Symbols, Formulas and Equations>EXERCISES>Q 15
If the aluminium salt of an anion X is Al2X3, what is the valency of X? What will be the formula of the magnesium salt of X?