Question

(i) To grow a specific variety of crop the optimum pH range of the soil should be 5.5 to 7.0.
A farmer decides to add lime to soil. Why does he take such a step?
(ii) What is the chemical name of washing soda? Name the three main raw materials
required for making it? Write the reaction involved in the preparation of washing soda.​

Answer 1

$\huge \tt \: answer :$

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The direction of magnetic field at the centre

of the circular loop depends on whether the

current in the loop flows in clockwise or

anticlockwise direction.When the current is in

clockwise direction, the magnetic field goes

into the side of wall.

when current is in clockwise direction the

direction of magnetic field (B) is towards

the circuit on the other hand when current

is in anticlockwise direction the direction of

magnetic field (B) is outwards the circuit.

Answer 2

Answer:

Rainwater harvesting can reduce stormwater runoff from a property. The elimination of runoff can reduce contamination of surface water with pesticides, sediment, metals, and fertilizers.

By reducing stormwater runoff, rainwater harvesting can reduce a storm’s peak flow volume and velocity in local creeks, streams, and rivers, thereby reducing the potential for streambank erosion.