13 Questions Available
Showing 13 questions on this page
Write the chemical formula of blue vitriol.
Explain the changes occurring in burning of candle.
Setting of curd is regarded as a chemical change, explain why?
Apart from new products, many other things accompany a chemical change, what are those things?
Explain why burning of wood and cutting it into small pieces are considered as two different types of changes.
Explain physical reaction along with examples.
Which one is better technique to obtain sugar from sugar solution- crystallization or evaporation to dryness?
Explain chemical reaction along with examples.
How can we prevent rusting?
Why new products are formed in a chemical reaction?
Explain the process of rusting.
State the condition necessary for the occurrence of any reactant.
What is a chemical change?