What is called for the removal of sand, gravel in the primary treatment of sewage treatment plant?

What is the first step in primary sewage treatment plants?

Oil tankers are now built with double hulls instead of one to avoid?

Which of the following way is used to reduce the pollution load on marine water?

When does the rate of aerobic oxidation reduced in the sewage that is reduced to the water?

Which of the following is the greatest volume of waste discharge to water?

Why ship accidents cause marine pollution?

Which is the most input of waste causing marine pollution?

In India, acid rains are not common due to?

Most hazardous metal pollutant of automobile exhaust is?

How carbon monoxide, emitted by automobiles, prevents transport of oxygen in the body tissues?

Air pollution is not caused by?

Oxides of sulphur and nitrogen are important pollutants of?

In 1984, Bhopal gas tragedy was caused due to leakage of?

The pollutants emitted by jet aeroplanes in outer atmosphere flourocarbons are known as

CFC are not recommended to be used in refrigerators because they?

The major factor in causing global warming is?

Spraying of D.D.T. on crops produces pollution of?

Air pollution causing photochemical oxidants production include?

Pollution is a necessary evil now a days because of?

Most harmful pollutant is?

Which one of the following gases can deplete ozone layer in the upper atmosphere?

Generally speaking, the atmosphere in big cities is polluted most by?

Which of the following gases are called Greenhouse gases?

What is the total percentage of nitrogen gas in the air?

The Taj Mahal, Lotus Temple, Golden Temple, India Gate and other famous heritage monuments are being affected by _______.

Increased levels of air pollution primarily causes?

Which of the following gas is more in percentage in the air?

Which of the following industries plays a major role in polluting air and increasing air pollution?

Smoke, fumes, ash, dust, nitric oxide and sulphur dioxide are the main sources of ________.

Which of the following agents is mainly responsible for the secondary pollutants?

How many different types of primary pollutants together contribute to about 90 per cent of the global air pollution?

DDT and Aluminium cans are examples of ________.

Which of the following diseases are caused by smog?

The major photochemical smog is________.

Which of the following statements is true about SMOG?

Which of the following agents is responsible for turning the Taj Mahal yellow?

Which of the following particles is called the particulate pollutants?

Which of the following pollutants are responsible for the cause of SMOG?

Who was the first scientist to coin the term SMOG and to describe the layers of SMOG?

Which of the following is called the secondary air pollutant?

ഇക്കോളജി എന്ന പദം ഉത്ഭവിച്ചത് ഏത് ഭാഷയിൽ നിന്നാണ് ?

ലോക പ്രകൃതി സംരക്ഷണ ദിനം ?

മനുഷ്യശരീരത്തിൽ ഡിഡിടി പോലുള്ള വസ്‌തുക്കൾ അടിഞ്ഞുകൂടുന്ന അവസ്ഥ?

ഓസോൺ പാളിക്ക് ഏറ്റവും കൂടുതൽ നാശം വരുത്തുന്ന ക്ലോറോ ഫ്ലൂറോ കാർബണിലെ ഘടകം ഏത് ?

ഇന്ത്യയിലെ ഏറ്റവും വലിയ സസ്യ ഉദ്യാനം സ്ഥിതി ചെയ്യുന്നത് എവിടെ ?

ജന്തുക്കൾക്കും സസ്യങ്ങൾക്കും ഇടയിലുള്ള മ്യൂച്ചലിസത്തിന് ഉദാഹരണം ഏത്?

രണ്ട് ജീവികൾക്കും ഗുണകരമാകുന്ന ജീവിത ബന്ധം ഏത്?

ഒന്നിന് ഗുണകരവും മറ്റേതിന് ദോഷകരമാകുന്ന പരാദജീവിതത്തിന് ഉദാഹരണം ഏത്?

മാംസാഹാരികളെ ഇരയാകുന്ന ഇരപിടിയന്മാർ ഏത് പോഷണ തലത്തിൽ വരുന്നവയാണ് ?