_____ is the basic material to manufacture urea.

Fill in the Blanks

Ammonia is the basic material to manufacture urea.

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Chapter 10: Changes around us - Exercises [Page 111]

Chapter 10 Changes around us
Exercises | Q II. 3. | Page 111

Name three reducing agents ?

State four conditions necessary for a chemical reaction to take place.

Give an example of a reaction where the following are involved

Electricity

Name: A greenish-yellow gas.

Give a chemical test to distinguish between the following gases.

NH₃ and HCl

Explain the term ‘chemical reaction’ with special reference to – ‘reactants’ and ‘products’.

Can a nickel spatula be used to stir copper sulphate solution? Justify your answer.

Iron benches kept in lawns and gardens get____________. It is a _________ change because a new _________ is formed.

Photosynthesis is a chemical charge. Justify your answer.

Why is spoiling food a chemical change?