A. Ammonium salts produce haze in atmosphere.
B. Ozone gets produced when atmospheric oxygen reacts with chlorine radicals.
C. Polychlorinated biphenyls act as cleansing solvents.
D. 'Blue baby' syndrome occurs due to the presence of excess of sulphate ions in water.
Choose the correct answer from the options given below:
B. Ozone gets produced when atmospheric oxygen reacts with chlorine radicals.
C. Polychlorinated biphenyls act as cleansing solvents.
D. 'Blue baby' syndrome occurs due to the presence of excess of sulphate ions in water.
Choose the correct answer from the options given below:
- A.A and D only
- B.B and C only
- C.A, B and C only
- D.A and C only
Show answer and solution
Correct option: D
Solution
Statement A is correct: ammonium salts (like ammonium sulfate, ammonium nitrate) from fertilizers and industrial emissions react in the atmosphere to form fine particulate matter, contributing to haze.
Statement C is correct: Polychlorinated biphenyls (PCBs) are industrial chemicals that were widely used as cleansing/degreasing solvents and in electrical equipment, and are persistent organic pollutants.
Statement B is wrong because chlorine radicals actually destroy ozone (Cl• + O₃ → ClO• + O₂), not produce it. Statement D is wrong because 'blue baby' syndrome (methaemoglobinaemia) is caused by excess nitrate ions in water, not sulphate ions.
Statement C is correct: Polychlorinated biphenyls (PCBs) are industrial chemicals that were widely used as cleansing/degreasing solvents and in electrical equipment, and are persistent organic pollutants.
Statement B is wrong because chlorine radicals actually destroy ozone (Cl• + O₃ → ClO• + O₂), not produce it. Statement D is wrong because 'blue baby' syndrome (methaemoglobinaemia) is caused by excess nitrate ions in water, not sulphate ions.
[JEE Main 2023 · 25 Jan · Shift 2]