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प्रश्न
________ is a chemical substance which alters the speed of a chemical reaction.
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उत्तर
Catalyst is a chemical substance which alters the speed of a chemical reaction.
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संबंधित प्रश्न
How do the following help in bringing about a chemical change?
light.
How do the following help in bringing about a chemical change?
heat.
TRUE \ FALSE
Weak electrolytes dissociate partially in their aqueous or fused state.
Give an example of the following chemical change.
A reaction where colour change is noticed
Complete and balance the following reaction:
\[\ce{Pb(NO3)2 ->[\Delta]}\]
Write your observation and a balanced equation in the case of the following substances being heated.
Copper carbonate.
State the following reaction represent oxidation or reduction.
\[\ce{H->H+}\]
Rusting of Iron: undesirable change:: Dead plants turn into manure: ______.
Give an example of a chemical reaction for the following situation:
A change in colour is observed
Rusting of iron is ______.
