Advertisements
Advertisements
प्रश्न
Give an example of a reaction where the following are involved
Heat
उत्तर
\[\ce{CuCO3_(_s_) ->[\Delta] CuO + CO2_(_g_)}\]
APPEARS IN
संबंधित प्रश्न
Fill in the blank
A new substance is formed in a _______ change.
Write true or false :
When iron and sulphur are heated together a grey mass is formed which is attracted by a magnet .
State the conditions necessary for a chemical change or reaction.
Define the following terms
Precipitate
Give an example of a reaction where the following are involved
Electricity
Give an example of a reaction where the following are involved
Catalyst
Write the chemical reaction where the following changes are observed.
Precipitate is formed
Name: A brown gas
Name: A greenish-yellow gas.
State the following reaction represent oxidation or reduction.
\[\ce{Ag->Ag+}\]
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.
Higher order Thinking question
Peeled and unpeeled banana does not look the same. Does that mean peeling banana is a chemical change?
Discuss how acid rain occurs due to emission of smoke from vehicles and industries?
Which of the following statement is incorrect for a chemical reaction?
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
What changes do you expect?
Vanaspati is obtained from vegetable oils by the addition of ______ to the oils.
______ are substances that speed up the process of a chemical change and it will not undergo any change during the course of the reaction.
We are advised to not to play with fireworks. Give reason.
Write a note on the following:
Curdling of milk
What is the difference between reactants and products?
