How will you close the circuit using sulphur, carbon or iodine ? They may be in powder form. Try to tightly pack the powder in a straw and use it . Think of other ways!

How will you prepare the following compounds from benzene? You may use any inorganic reagent and any organic reagent having not more than one carbon atom {:("(i) Methyl benzoate"," (ii) m-Nitrobenzoic acid"),("(iii) p-Nitrobenzoic acid"," (iv) Phenylacetic acid"),("(v) p-Nitrobenzaldehyde.",):}

Now in the same way, let us study a plant or a tree as habitat. Birds, monkeys, squirrels, snakes, ants, spiders, caterpillars, moths, bees, wasps, small plants (mosses), mosquitoes are some organisms that you may find on a-tree. Try to classify them in table 5 based on where you find them. Add some more examples that you know.

A certain compound (x ) shows the following reactions. (i) When KI is added to an aqueous suspension of X containing aceticacid, iodine is liberated. (ii) When CO_(2) is passed through an aqueous suspension of 'X', the turbidity transforms to a ppt. (iii) When a paste of (X ) in water is heated with ethylalcohol, a product of anaesthetic use is obtained. The anaesthetic obtained in the above, treated with silver powder to form the following.