No new industries are allowed in thickly populated cities by Government order. Why such an order is issued?

As per the court order, a large number of small scale industries around Taj Mahal were closed. Find the reason for passing such order by the court.

Aluminium is prepared industrially by Hall- Heroult process. Various steps in the concentration of ore are given below. Write them in the correct order. i)The precipitate formed is separated, washed and strongly heated to get alumina. ii) Crushed bauxite is leached with hot sodium hydroxide solution. iii) Impurities are removed from the sodium aluminate solution by filtration. iv) Solution is diluted after adding a little aluminium hydroxide, to precipitate aluminium hydroxide .

As per the court order, a large number of small scale industries around Taj Mahal were closed. List another environmental problem, related to the above reason, from your daily life.

The following steps are involved during synaptic transmission. Rearrange them in correct order. a) Release of neurotransmitter at synaptic cleft. b) Generation of a new potential at post synaptic neuron c) Arrival of impulse at the axon terminal d) Binding of neurotransmitter with specific receptor e) Movement of synaptic vesicle towards the membrane.