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प्रश्न
What do you observe when :
lighted match stick is brought near the mouth of the test tube containing hydrogen gas.
उत्तर
We observe that hydrogen bums at the mouth of test tube with blue flame and pop sound is heard. It is chemical change.
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संबंधित प्रश्न
Fill in the blank.
Growing of a seedling into a plant is _______ change.
Write true or false
Melting of ice is a physical change.
Tick (√) the correct alternative from the choice given for the following statement
Which one of the following is volatile in nature ?
State the Differences Between a Physical Change and a Chemical Change.
Fill in the blank.
The process of a liquid changing into a solid is called ________
Give three reasons why melting of wax, is considered a physical change while burning of a candle, a chemical change.
State whether the following statement is true or false. If false write the correct statement.
Melting of ice is an exothermic, irreversible chemical change.
Select the chemical changes from the following list of changes
Glowing of an electric bulb.
What type of change is colouring of a paper?
Natural changes which take place in nature on their own, are beyond the control of human being.
