EASY
Stage 1 & 2
IMPORTANT
Earn 100

The colour of copper oxide is
(a)green
(b)black
(c)blue
(d)white

50% studentsanswered this correctly

Important Questions on Chemical Reactions and Equations
MEDIUM
Stage 1 & 2
IMPORTANT
In exothermic reaction, heat is

MEDIUM
Stage 1 & 2
IMPORTANT
The precipitate formed when copper sulphate reacts with hydrogen sulphide

EASY
Stage 1 & 2
IMPORTANT
Carbon burns with oxygen to form

MEDIUM
Stage 1 & 2
IMPORTANT
Calcium oxide and carbon dioxide are formed due to the decomposition of

MEDIUM
Stage 1 & 2
IMPORTANT
The above reaction is an example of a

MEDIUM
Stage 1 & 2
IMPORTANT
Which of the statements about the reaction below are incorrect?
1. Lead is getting reduced
2. Carbon dioxide is getting oxidised
3. Carbon is getting oxidised
4. Lead oxide is getting reduced

EASY
Stage 1 & 2
IMPORTANT
On burning magnesium in the air, we get

EASY
Stage 1 & 2
IMPORTANT
The metal that can displace Fe from its salt is
