Advertisements
Advertisements
प्रश्न
What do you observe when :
lighted match stick is brought near the mouth of the test tube containing hydrogen gas.
Advertisements
उत्तर
We observe that hydrogen bums at the mouth of test tube with blue flame and pop sound is heard. It is chemical change.
APPEARS IN
संबंधित प्रश्न
Classify the following as chemical or physical change:
Boiling of water to form steam.
State whether the following is physical or chemical changes.
respiration in living beings —
State whether the following is physical or chemical changes.
heating a mixture of iron filings and sulphur—
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
Write true or false
A natural change can also be a desirable change.
The rusting of an iron object is called :
Define a chemical change. Give two examples of the above changes.
Fill in the blank.
There is no change in the _____________of the substance during a physical change.
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Periodic and non-periodic change
State whether the following statement is true or false:
Stretching of rubber bands is not a physical change.
