19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The basic components of the smog are (AMU 2005)
…A… of pollution are those where a source of pollution cannot be identified. Here, A refers to :
Phosphate pollution is brought about by (AIPMT 1997)
Atmospheric gases trap the sun’s heat near the earth’s surface and keep it warm. This is called …A… Here A refers to
Which of the following is/are the greenhouse gases?
Which of the following greenhouse gas is released in paddy field? I. CFCs II. CH4 III. SO2
Which of the following green gas is damaging the ozone layer?
Excess use of chemical fertilizers increases the quantity of…A… (air pollutant) in the atmosphere. Here, A refers to..
pH of normal rain water is :
Rain water is slightly acidic because I. Water reacts with CO2 and forms H2CO3 II. Rain water reacts with CO and forms H2CO3 Identify the correct option:
When the pH of the rain water drops below 5., it is called …A…A, Here, A refers to :
Acid rain is due to : I. Oxides of nitrogen II. Oxides of sulphur III. Methane present in the air
How can we reduce the rate of global warming?
Aerosol particles of oxides are ammonium salts in rain drops results in …A… here A refer to.
Greenhouse effect is caused by: (AIPMT 2002, AFMC 2002)
When rain is accompanied by a thunderstorm, the collected rain water will have a pH value (AIEEE 2003)
Biological Oxygen Demand (BOD) is a measure of (AIIMS 2003)
Which one of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere? (AIPMT 2004)
Nitrogen oxides produced from the presence of (KET 2004)
Which of the following air pollutants is deposited as dry-deposition ?
Acid rain is harmful for: I. Agriculture II. Aquatic ecosystem III. Buildings and other structures made of stone or metal. Select the correct option;
Which of the following interrelation with our surroundings are included in environmental studies?
The Taj Mahal in India is affected by pollutant:
Environmental chemistry deals with the study of the
A substance which cause pollution is known as