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प्रश्न
Name the following:
A catalyst which increases the rate of a chemical reaction.
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उत्तर
Manganese dioxide (MnO2).
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संबंधित प्रश्न
Explain the following reaction with one suitable example .
Decomposition reaction
Balance the following equation. Also name the products formed.
`"Mg" + "O"_2 → "MgO"`
The step(s) necessary for determining the percentage of water absorbed by raisins is/are:
Write the chemical equation for the following word equation and balance them.
Magnesium + Sulphuric acid → Magnesium sulphate + Hydrogen
Write the balanced chemical equation of the following reaction.
aluminium sulphate + sodium hydroxide → sodium sulphate + sodium meta aluminate + water.
When a potassium iodide solution is added to a solution of lead (II) nitrate in a test tube, a precipitate is formed.
What is the colour of this precipitate? Name the compound precipitated.
Representation of the results of a chemical change – is a chemical equation.
For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓
Answer the following:
Write the word equation for the above molecular equation.
Name the following:
The silvery residue obtained on heating mercury [II] oxide.
Balance the following simple equation:
H2 + Cl2 → HCl
What are reactants? Explain with the help of example.
