Converting milk into paneer is a reversible change.
True
False
Burning of coal is an irreversible change.
Burning of crackers is a slow change.
Letting air escape from the balloon is a fast change.
Solubility of salt increases with increase in temperature.
Which of the following is a reversible change?
Cooking of food
Melting of ice cream
Curdling of milk
Rusting of iron
Choose the fast change from the following.
Dissolving salt in cold water
Burning of paper
Ripening of mango
Changing day and night
What does solubility depends on?
Temperature
Pressure
None
Both
In which of the following examples, property of expansion and contraction of metals is utilized?
Fix wooden handle in iron blade
Fix metal rim on wooden wheel
Separate two tightly fixed glass tumbler
All of these
What type of change is folding of paper?
Physical and irreversible change
Physical and reversible change
Chemical and irreversible change
Chemical and reversible change
reversible
irreversible
fast
slow
Solute
Solvent
decreases
increase
