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Control And Coordination

Question

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Compounds such as alcohols and glucose also contain hydrogen but are not categorised as acids. Describe an activity to prove it.

Solution

Take solutions of alcohols, glucose in a beaker. Take a cork and fix two nails on the cork upto the end. Keep this cork in the beaker. Connect the nails to two terminals of a 6 volt battery through a bulb and a switch. Switch on the current. You will see that bulb does not glow or the current does not pass through the circuit. This means no ions or H⁺ ions are present in the solution. This shows that alochols and glucose are not acids.

Some More Questions From Control and Coordination Chapter

What are non-metallic oxides? Substantiate your answer.

Take 5 ml hydrochloric acid in a boiling tube or a conical flask. Add a few pieces of zinc granules to it.

(a) What do you observe on the surface of zinc granules?
(b) Name the gas evolved.
(c) What happens when the above gas is passed through soap solution?
(d) What happens when a burning candle is brought near the gas filled tube?

Name four acids and bases. Write their formulae.

Name the various kind of oxides and mention their properties.

What are acids? How are they produced?

Mention important characteristics of acids.

Why the vessels of copper and brass need ‘Kalai’?

How can you test the presence of an acid in any substance?

Why are acids not stored in metal containers? Containers/vessels made from which material are safe to store acids.

A solution turns red litmus paper blue. What does this indicate about the chemical nature of the solution?

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