_____ is the basic material to manufacture urea.

रिकाम्या जागा भरा

Ammonia is the basic material to manufacture urea.

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पाठ 10: Changes around us - Exercises [पृष्ठ १११]

पाठ 10 Changes around us
Exercises | Q II. 3. | पृष्ठ १११

Explain by writing a word equation.

Limestone powder disappears on adding to dilute hydrochloric acids.

When electric current is passed through acidulated water ______ of water takes place.

Explain the term reactant and product giving examples.

Give an example of a reaction where the following are involved:

Solution

Multiple choice:

Which of the following is not a characteristic of a chemical change?

Name the gases which turn moist red litmus blue.

Give a chemical test to distinguish between the following gases.

H₂ and O₂

Rusting of Iron: undesirable change:: Dead plants turn into manure: ______.

A chemical change may involve –

What is the difference between reactants and products?