Why a person painted his iron gate?
a) to save from rusting
b) to save from sunlight
c) to make it beautiful
d) to save from water
Out of these which answer is more suitable?
a) 1 and 2
b) 1 and 3
c) 2 and 3
d) 1 and 4
Which factor will NOT affected the dissolving of sugar in water?
a) to add salt in water
b) to make sugar powder by grinding
c) to heat water and sugar
d) to stir water and sugar
Which one is NOT a chemical change?
a) seed germination
b) making paper boat
c) burning of wood
d) cooking food
What type of change is it when metal expands on heating?
a) permanent
b) chemical
c) physical
d) irreversible
