Which one of the following approaches comes under the category of biotechnology?
Use of living organisms or substances obtained from them in industrial processes
Modernizing the commercial industries to produce products for use in biological research
Use of modern technology to investigate biological disorders
Use of industrial technology to increase the biosphere
Though a few (gas based)industries have already been established good reserves of natural gas in India remain unutilised .This vast resource of natural gas can be used in the production of
Man cannot digest cellulose whereas cows can do so because
Their gut contains certain bacteria capable of digesting cellulose
They have a many chambered stomach
They have efficient grinding molars
They produce an enzyme cellulose which can digest cellulose
German silver is an alloy of
copper, zinc and nickel
copper, iron and tin
iron, chromium and nickel
copper, aluminium and nickel
The bats are able to fly in dark since their wings produce
Three important micro nutrients essential for humans are
Copper, zinc and iodine
Zinc, copper and potassium
Nitrogen, molybdenum and iodine
Sulphur, copper and iron
Which one of the following chemicals is responsible for the depletion of ozone layer in the atmosphere?
Which one of the following plants can fix nitrogen from air?
The gas used for artificial ripening of green fruits is
Superconductors are so called because they
Efficiently conduct heat from one hot body to another
Offer no resistance to conduction of heat at high temperatures
Offer no resistance to conduction of electricity at low temperatures
Produce high temperatures while conducting electricity
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