EASY
7th ICSE
IMPORTANT
Earn 100

Explain what happens when potassium iodide is added to lead nitrate.

Important Questions on The Language of Chemistry

EASY
7th ICSE
IMPORTANT
Explain what happens when ammonium chloride is heated.
EASY
7th ICSE
IMPORTANT
Explain what happens when iron sulphide is heated with dilute hydrochloric acid.
HARD
7th ICSE
IMPORTANT
Explain the steps for writing a chemical eqaution.
HARD
7th ICSE
IMPORTANT
Give an example of a reaction in which the change in colour is observed. Also, write the word and chemical equation for it.
HARD
7th ICSE
IMPORTANT

Give an example of a reaction in which formation of a precipitate is observed. Also, write the word and chemical equation for it.

HARD
7th ICSE
IMPORTANT

Give an example of a reaction in which evolution of gas is observed. Also, write the word and chemical equation for it.

HARD
7th ICSE
IMPORTANT
Explain the difference between endothermic and exothermic reactions. Give examples.
MEDIUM
7th ICSE
IMPORTANT
What are the conditions for a chemical reaction to take place?