Advertisements
Advertisements
प्रश्न
Identify the following substance:
Gas C that is colourless and can be used as a bleaching agent.
उत्तर
Sulphur dioxide
APPEARS IN
संबंधित प्रश्न
An element Z has a valency of 3. What is the formula of oxide of Z ?
An element Z has a valency of 3. What is the formula of oxide of Z ?
An element X of valency 3 combines with another element Y of valency 2. What will be the formula of the compound formed ?
Give the formulae of the compounds formed from the following sets of elements :
- calcium and fluorine
- hydrogen and sulphur
- nitrogen and hydrogen
- carbon and chlorine
- sodium and oxygen
- carbon and oxygen
Give the formula and valency of:
chromate ………….…….. .
Complete the following statement by selecting the correct option :
The correct formula of aluminium oxide is
Give the empirical formula of Acitic Acid CH3COOH.
Identify the following substance:
An alkaline gas A which gives dense white fumes with hydrogen chloride.
Write the formula of the following compound:
Sodium sulphate
Write the formula of the following compound:
Calcium nitrate
Write the formula of the following compound:
Calcium bisulphite
Write the formula of the following compound:
Zinc oxide
Write the formula of the following compound:
Copper [I] oxide
Write the formula of the following compound:
Iron [II] hydroxide
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaO
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaClO
What do you understand by chemical formula of a compound? What is its significance?
Write the steps that are followed to write down the chemical formula of a substance.
Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.
