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प्रश्न
Give an example of a reaction where the following are involved
Catalyst
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उत्तर
\[\ce{2KCIO3_ ->[MnO2] 2KCI + 3O2}\]
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संबंधित प्रश्न
Complete and balance the following chemical equations:
`"H"_2"S"` + `"CI"_2` `→`
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Compounds, which in their molten state allow an electric current to pass through them are called
- electrolytes
- non-electrolytes
- non-conductors
- none of these
Name three reducing agents ?
Write a short note on the information derived from a balanced chemical equation.
Fill in the blank:
The basic conditions necessary for a chemical reaction is _______
What is observed in performing the following :
| Hydrogen | Oxygen | Carbon dioxide | Chlorine | |
| Litmus test | ||||
| Apply a burning splint to the gas | ||||
| Colour of gas | colourless | colourless | colourless | greenish-yellow |
| Odour of gas |
State the original colour of the following substance and colour of residue obtained after heating.
Zinc carbonate
What do you observe when H2S is passed through a lead nitrate solution.
Chemical change is a temporary change.
Melting of wax is a change where a solid changes to liquid state. Give one more such change which you observe in your surroundings
