Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins which are not generally destroyed by normal cooking process. Aflatoxins are produced by 1) Bacteria ...

Photochemical smog is a resultant of the reaction among 1) NO2, O3 and Peroxyacetyl nitrate in the presence of sunlight 2) CO2, O2 and Peroxyacetyl nitrate in the presence of sunlight 3) ...

Acid rain is caused by the pollution of environment by 1) Carbon dioxide and nitrogen 2) Carbon monoxide and carbon dioxide 3) Ozone and carbon dioxide 4) Nitrous oxide and Sulphur dioxide ...

Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms? 1) Ecotone 2) Ecological niche 3) ...

The known forces of nature can be divided into four classes, viz, Gravity electromagnetism, weak nuclear force and strong nuclear force. With reference to them, which one of the following statements is not correct? 1) ...

Fruit stored in a cold storage exhibit longer storage life because 1) Exposure to sunlight is prevented 2) Concentration of carbon dioxide in environment is increased 3) Rate of respiration is decreased ...

Ball bearings are used in bicycles, cars, etc., because 1) The actual area of contact between the wheel and axle is increased 2) The effective area of contact between the wheel and axle ...