Question Detail Which of the following is produced during the formation of photochemical smog ? Nitrogen OxidesHydrocarbonsMethaneOzone Answer: Option D Similar Questions : 1. The substance that contains the maximum amount of nitrogen is ? Ammonium SulphateUreaAmmonium NitrateAmmonium Chloride Answer: Option B 2. Permanent hardness of water is due to the presence of ? Magnesium bicarbonateCalcium bicarbonateSodium bicarbonateCalcium sulphate Answer: Option D 3. The metal that is used as a catalyst in the hydrogenation of oils is ? PbNi Cu Pt Answer: Option B 4. The aqueous solution of which acids is called Vinegar ? Acetic acidHydrochloric acidCitric acidOxalic acid Answer: Option A 5. Air contains maximum amount of oxygennitrogenhydrogencarbon dioxide Answer: Option B Read more from - Chemistry Questions Answers