Action of Heat on Substances MCQ
The colour of nitrogen dioxide is
1. Reddish brown
2. Dull greenish
3. Bluish green
4. Pale yellow
Answers in
Last Page >>>
The colour of zinc oxide when cooled is
1. Reddish brown
2. Brown
3. Yellow
4. Dull greenish
Answers in
Last Page >>>
The colour of lead oxide when cooled
1. Yellow
2. Greenish
3. Brown
4. Pink
Answers in
Last Page >>>
The colour of copper oxide
1. Dull greenish
2. Reddish brown
3. Black
4. Grey
Answers in
Last Page >>>
Which of the following belongs to physical change?
1. New substances are formed
2. Energy is not released
3. Energy is absorbed
4. Temporary change
Answers in
Last Page >>>
This change can be reversed easily
1. Physical change
2. Chemical change
3. Both (1) and (2)
4. None
Answers in
Last Page >>>
…… change cannot be easily reversed.
1. Chemical change
2. Physical change
3. Both (1) and (2)
4. None
Answers in
Last Page >>>
Lighting a match stick is an example of :
1. Physical
2. Chemical
3. Both (1) and (2)
4. None
Answers in
Last Page >>>
The colour of lead oxide on heating
1. Yellow
2. White
3. Brown
4. Green
Answers in
Last Page >>>
'Ice' melting into water is an example of
1. Chemical change
2. Physical change
3. Both (1) and (2)
4. None of the above
Click here to check your answers