19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Acid rain is due to : I. Oxides of nitrogen II. Oxides of sulphur III. Methane present in the air
When the pH of the rain water drops below 5., it is called …A…A, Here, A refers to :
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:
pH of normal rain water is :
Excess use of chemical fertilizers increases the quantity of…A… (air pollutant) in the atmosphere. Here, A refers to..
Which of the following green gas is damaging the ozone layer?
Which of the following greenhouse gas is released in paddy field? I. CFCs II. CH4 III. SO2
Which of the following is/are the greenhouse gases?
Atmospheric gases trap the sun’s heat near the earth’s surface and keep it warm. This is called …A… Here A refers to
In cold places flowers, vegetables and fruits are grown in glass covered areas called …A…here A refers to :
Which of the following gases cause global warming ? I. CO2 II. O3 III. CO IV. Chlorofluorocarbons (a)I, II and III
Green plants require CO2 for
Content of CO2 present in atmosphere is :
In pregnant women who have the habit of smoking the increased CO level in blood may induce harmful effects like :
In blood, when concentration of carboxyhaemoglobin reaches about 3-4%, the oxygen carrying capacity of blood …A… Here, A refers to
What is true about CO gas?
Carbon monoxide is mainly released into air by :
Which of the following statement(s) is//are true about carbon monoxide?
Which of the following are the harmful effect of nitrogen dioxide? I. It retards the rate of photosynthesis II. It causes respiratory disease in children III. It is toxic to living tissues.
The irritant red haze in the traffic and congested place is due to…A..
In an automobile engine, (at high temperature) when fossil fuel is burnt, N2 and O2 combine to yield :
Which of the following pollutant(s)catalyse(s) the oxidation of sulphur dioxide to sulphur trioxide?
Which of the following diseases is caused due to SO2?. I. Digestive diseases II. Asthma III. Bronchitis IV. Emphysema
SO2 gas is poisonous to:
Which of the following are major gaseous pollutants present in the troposphere? I. H2S II. Oxides of sulphur, nitrogen and carbon III. O3