Advertisements
Advertisements
प्रश्न
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 _________.
Advertisements
उत्तर
Chemical changes may involve exchange of energy in the form of light and heat.
APPEARS IN
संबंधित प्रश्न
What do you observe when :
a piece of paper is burnt
State whether the following is physical or chemical changes.
passing electric current through a heater rod —
State whether the following is physical or chemical changes.
Melting of wax —
Tick (√) the correct alternative from the choice given for the following statement
Burning is a
True or false?
In a chemical change, rearrangement of molecules and atoms involves some energy changes.
Under which different types can the following changes be classified?
Stretching of a spring.
Fill in the blank with the correct word of the statement given below:
Ammonium chloride, a sublimable solid undergoes _________ on heating.
How can a change occur in a substance?
Picture based question
Observe the picture and list down the changes that are accompanied in the picture.
- ______.
- ______.
- ______.
Cut vegetables turn brown when exposed to air, this is due to ______.
