Advertisements
Advertisements
प्रश्न
The gas we use in the kitchen is called liquefied petroleum gas (LPG). In the cylinder, it exists as a liquid. When it comes out from the cylinder it becomes a gas (Change − A), then it burns (Change − B). The following statements pertain to these changes. Choose the correct one.
विकल्प
Process − A is a chemical change
Process − B is a chemical change.
Both processes A and B are chemical changes.
None of these processes is a chemical change
Advertisements
उत्तर
Process − B is a chemical change.
APPEARS IN
संबंधित प्रश्न
How do the following help in bringing about a chemical change?
heat.
Complete and balance the following chemical equations:
Fe `"SO"_4` + NaOH `→`
(aq.) (aq.)
Is kerosene an electrolyte or a non-electrolyte ?
What do you observe when :
an iron nail is kept in tap water for few days
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
The spoiling of food is a chemical change which is recognized from the generation of certain ______ due to it.
Give an example of a reaction where the following are involved:
Solution
What do you understand by 'chemical reaction'?
Complete the table given below.
| Heat on Zinc nitrate | Colour of residue |
_____ is the basic material to manufacture urea.
What is the role of a catalyst in a chemical reaction?
