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.
पर्याय
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
उत्तर
Process − B is a chemical change.
APPEARS IN
संबंधित प्रश्न
Complete and balance the following chemical equations:
\[\ce{Pb(NO3)2->[heat]}\] _________
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)
Oxygen is a ______ in respiration.
Explain the term reactant and product giving examples.
Complete the table given below.
| Addition of dil. H2SO4 to FeS | Odour of gas evolved |
State the following reaction represent oxidation or reduction.
\[\ce{H->H+}\]
Explain the term chemical reaction with special reference to reactants and products.
The chemical change is ______.
Iron benches kept in lawns and gardens get____________. It is a _________ change because a new _________ is formed.
Rusting of iron is ______.
Write five changes in the characteristics of a substance that can take place during a chemical change.
