Environmental I...

A higher biochemical oxygen demand in a particular segment of a river indicates that

If a water body have high amount of DDT it's 'Biochemical Oxygen Demand' (B.O.D.) will

Catalytic converters, which are fitted into automobiles for reducing the emission of poisonous gases possess which of the following metals as catalyst ?

Motor vehicles equipped with catalytic converter are advised to use unleaded petrol because 

BOD is ___________ in polluted water and ________in potable water.

A lake with an inflow of domestic sewage rich in organic waste may result in

Study the following ststements regarding organic farming and select the correct ones.
(i) It utilities genetically modified crops like Bt cotton.
(ii) It uses only naturally produced inputs like compost and biofertilisers.
(iii) It does not use pesticides and urea.
(iv) It produces vegetables rich in vitamins and minerals.

BOD of wastewater is amount of

The amount of biodegradable organic matter in sewage water can be estimated by measuring

Given pie-diagram represents the relative contribution of various $$ { GHG }_{ s } $$ to total global warming. Select the correct statements(s) regarding A, B and C.