Which of the following is not a condition for the formation of smog ?
(A) sufficient NO
(B) sunlight
(C) less movement of air
(D) winds
Hypochlorous acid is used for disinfecting the water it reacts with the dissolved ammonia producing___________________?
(A) NH2Cl
(B) NHCI2
(C) NCI2
(D) all of the above
Residence time of methane in the atmosphere is___________________?
(A) 3 – 7 days
(B) 2 -3 days
(C) 3 – 7 years
(D) 2 – 3 years
Three elements needed for the healthy growth of plants are_________________?
(A) N P K
(B) N K C
(C) N S P
(D) N Ca P
Which of the following is not a secondary pollutant_________________?
(A) ozone
(B) carbonic acid
(C) sulphuric acid
(D) carbon dioxide
Requirement of macronutrient per acre of the land is_________________?
(A) 5 to 200 kg
(B) 20-200 kg
(C) 200-400 kg
(D) 30-400 kg
Pollutants have adverse effect over_________________?
(A) Biosphere
(B) Ecosystem
(C) Both a & b
(D) Hydrosphere