(a) Synthetic fibres are also called artificial or man-made fibres.
(b) Synthetic fibres are synthesized from raw materials called petrochemicals.
(c) Like synthetic fibres, plastic is also a polymer.
(a) Burning of wood and coal causes pollution of air.
(b) A liquid fuel used in homes is LPG.
(c) Fuel must be heated to its ignition temperature before it starts burning.
(d)...
(a) The British conquest of Bengal began with the Battle of ___________.
Ans. Plassey
(b) Haidar Ali and Tipu Sultan were the rulers of ___________.
Ans. Mysore
(c) Dalhousie implemented the Doctrine of ____________.
Ans. Lapse
(d) Maratha kingdoms...
(a) The presence of specific features, which enable a plant or an animal to live in a particular habitat, is called adaptation.
(b) The habitats of the plants and animals that...
(i) Artificial magnets are made in different shapes such as bar-magnet, cylindrical magnet and horse-shoe magnet.
(ii) The Materials which are attracted towards a magnet are called magnetic material.
(iii) Paper is...
(a) The main steps of nutrition in humans are ingestion, digestion, absorption, assimilation and egestion.
(b) The largest gland in the human body is liver.
(c) The stomach releases hydrochloric acid and...
