HARD
9th ICSE
IMPORTANT
Earn 100

Based on the reactions of water on metals, arrange the following metals in increasing order of reactivity:
Iron, sodium magnesium, zinc, calcium.

Important Questions on Study of the First Elements-Hydrogen
HARD
9th ICSE
IMPORTANT

HARD
9th ICSE
IMPORTANT

HARD
9th ICSE
IMPORTANT

HARD
9th ICSE
IMPORTANT

HARD
9th ICSE
IMPORTANT
Give a reason for the following:
Though lead is above hydrogen in the activity series, it does not react with dilute hydrochloric acid or dilute sulphuric acid.

HARD
9th ICSE
IMPORTANT
Give a reason for the following:
Potassium and sodium are not used for reaction with dilute hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.

HARD
9th ICSE
IMPORTANT

HARD
9th ICSE
IMPORTANT
