Advertisements
Advertisements
प्रश्न
Complete the statement by filling the gap using an appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
An ______ is drawn in between the reactants and products while writing the equation for a chemical reaction.
Advertisements
उत्तर
An arrow is drawn in between the reactants and products while writing the equation for a chemical reaction.
संबंधित प्रश्न
How do the following help in bringing about a chemical change?
heat.
Write the missing reactants and products and balance the equations.
\[\ce{KClO3 ->[heat]}\] ___________+ ____________
FILL IN THE BLANK
A .............. change is a temporary change.
Write true or false :
When iron and sulphur are heated together a grey mass is formed which is attracted by a magnet .
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 |
Give balanced equation for the following conversion affected by heat alone on the substance:
Hydrated copper sulphate to sulphur dioxide
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.
Select the correct answer from the options given below:
State the gaseous product formed, when
An active metal reacts with dilute sulphuric acid.
NPK are the primary nutrients for plants.
On heating calcium carbonate gets converted into calcium oxide and carbon dioxide.
(a) Is this a physical or a chemical change?
(b) Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.
