Why is open dumping of solid waste not advisable ? What is done while segregating solid waste ?

(a) Thevarious methods used by the plants to get rid of their waste products are  (i) the plants get rid of gaseous waste products through stomata in leaves and lenticels in...

(a) The chemical coordination in animals takes place through the actions of chemicals called hormones which are release directly into the blood and are carried by the blood circulatory system...

Bioderghradable Wastes  1. Those waste materials which can be broken down to non-poisonous substances in nature by the action of microorganisms (like bacteria) are called biodegradable wastes.  2. They get recycled and...

(a) Aluminium does not corrode right through because aluminium is more reactive than iron and it forms a layer of aluminium oxide as soon as it comes in contact with...

As we know that alkalis react with oil to form soap. As our skin contains oil so when we touch strong alkalis, a reaction takes place and soapy solution is...

A tree usually takes more than 15 years to grow fully; therefore renewal of wood as energy source takes a long time. Further, the cutting of trees on a large...

In primary treatment the run-off should be drained through screens, grit chambers and sedimentation tanks to remove toxic chemicals from the water. In secondary treatment the waste water the primary...

(a) Solid + Solid mixture:  Sand and stone, sand and sugar. (b) Solid + Liquid mixture : Sand and water, Charcoal and water. (c) Liquid + Liquid mixture :  Oil in water,  Alcohol and water

Two examples of :  (a) solid – solid –  1. sand and sugar  2. sand and iron filling.  (b) solid – liquid –  1. salt and water  2. charcoal and water.  (c) liquid – gas –  1. coca...

(a) Iron and sulphur.  (b) Sand and water, rice and water.  (c) Sugar from its solution in water.