Conservation of Plants and Animals Exercise: 1). Fill in the blanks. (a) A place where animals are protected in their natural habitat is called wild life sanctuary. (b) Species found only in a particular area is known as Endemic species. (c) Migratory birds fly to far away places because of climate changes. 2). Differentiate …
NCERT Solutions Std 8 Science Conservation of Plants and Animals Read More »
Combustion and Flame Exercise: 1). List conditions under which combustion can take place. Ans: The conditions under which combustion can take place are as follows. i). presence of a combustible substance ii). Presence of oxygen in the air. iii). Attaining ignition temperature. 2). Fill in the blanks. (a) Burning of wood and coal causes pollution …
NCERT Solutions Std 8 Science Combustion and Flame Read More »
Coal And petroleum Exercise: 1). What are the advantages of using CNG and LPG as fuels? Ans: The advantages of using CNG and LPG as fuels are as follows i). They are less polluting. ii). They are cleaner fuels. iii). they can be used directly for burning. iv). Their cost is low. 2). Name the …
NCERT Solutions Std 8 Science Coal and Petroleum Read More »
Microorganisms: Friend and Foe Exercise: 1). Fill in the blanks. (a) Microorganisms can be seen with the help of a microscope. (b) Blue-green algae fix nitrogen directly from air and enhance fertility of soil. (c) Alcohol is produced with the help of yeast. (d) Cholera is caused by bacteria. 2). Tick the correct answer. …
NCERT Solutions Std 8 Science Microorganisms Friend and Foe Read More »
Crop Production and Management Exercise: 1). Select the correct word from the following list and fill in the blanks. (float, water, crop, nutrients, preparation) (a) The same kind of plants grown and cultivated on a large scale at a place is called crop. (b) The first step before growing crops is preparation of the soil. …
NCERT Solutions Std 8 Science Crop Production and Management Read More »
