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प्रश्न
Name: A greenish-yellow gas.
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उत्तर
Chlorine
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संबंधित प्रश्न
How do the following help in bringing about a chemical change?
catalyst .
TRUE \ FALSE
Evaporation of water is a physical change. True or false ?
State four conditions necessary for chemical reactions to take place.
Fill in the blank:
During a chemical reaction transfer of ________ takes place.
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Hydrogen chloride
Give an example of a reaction where the following are involved
Electricity
Write your observation and a balanced equation in the case of the following substances being heated.
Zinc carbonate.
Select the correct answer for the following options:
The black residue obtained on heating copper carbonate.
Write word equations for two chemical reactions with the help of materials given in the box.
| Air, copper sulphate, iron, vinegar, iron oxide, carbon dioxide, iron sulphate, copper, lime water, water |
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.
Write a word equation for the chemical change, if any.
