Advertisements
Advertisements
प्रश्न
What do you observe when :
a piece of paper is burnt
उत्तर
On burning piece of paper produces carbon dioxide and ash is left behind. Is a chemical change.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Burning of fuel is a _______ change.
Tick (√) the correct alternative from the choice given for the following statement
Burning is a
Tick (√) the correct alternative from the choice given for the following statement
When sugar is heated, its colour changes into
True or false?
In a chemical change, rearrangement of molecules and atoms involves some energy changes.
Chemical changes are accompanied by changes in energy.
Under which different types can the following changes be classified?
Stretching of a spring.
Fill in the blanks with the appropriate words of the statement given below:
Chemical changes may involve exchange of energy in the form of __________ and _________.
Fill in the blank with the correct word of the statement given below:
Ammonium chloride, a sublimable solid undergoes _________ on heating.
Paper, LPG, CNG petrol, etc, are ______ substances.
Cut vegetables turn brown when exposed to air, this is due to ______.
