Skip to content
MCQtimes.com
GK
Pakistan Studies
Current Affairs
Islamic Studies
English
MCQtimes.com
Toggle Menu
Physical and Chemical Changes
Home
/
General Science
/
General Science for Class 7
/
Physical and Chemical Changes
- Page 16
Show/Hide Answers
Physical and Chemical Changes
A substance which is burned to produce heat and light is known as
fuel
alcohol
acid
alkane
Author:
rikazzz
Comment
Physical and Chemical Changes
The particles of iron sulfide are
physically bonded
chemically bonded
biologically bonded
permanently bonded
Author:
rikazzz
Comment
Physical and Chemical Changes
If magnesium is gently heated, it forms
magnesium oxide
magnesium sulfide
magnesium nitrite
magnesium carbonate
Author:
rikazzz
Comment
Physical and Chemical Changes
As compare to gases, liquids are
incompressible
compressible
more compressible than liquids
less compressible than liquids
Author:
rikazzz
Comment
Physical and Chemical Changes
The strongest force of attraction is found in
fluids
liquids
gases
solids
Author:
rikazzz
Comment
Physical and Chemical Changes
A change of state from one form to other is a
physical change
chemical change
biological change
state variation
Author:
rikazzz
Comment
Physical and Chemical Changes
At first slightly different form of ‘polythene’ was discovered in
1733
1833
1933
1953
Author:
rikazzz
Comment
Physical and Chemical Changes
In chemical reactions, energy is absorbed or released in the form of
sound
light
electricity
heat
Author:
rikazzz
Comment
Physical and Chemical Changes
The reactions of ‘exothermic’ are
condensation reactions
endothermic reactions
reversible reactions
substitution reactions
Author:
rikazzz
Comment
Physical and Chemical Changes
The color of solid iron is
green
brown
grey
black
Author:
rikazzz
Comment
Page navigation
Previous Page
Previous
1
…
14
15
16
17
Next Page
Next
Go to Page
Light
Dark
GK
Pakistan Studies
Current Affairs
Islamic Studies
English