1. _______ is used in the manufacture of fertilizers.   Lead nitrate   Copper nitrate   Sodium nitrate   Ammonium nitrate   Hint Half-n-half Clue   2. Which of the following salts is soluble in water?   Copper carbonate   Lead chloride   Sodium sulfide   Barium sulfate   Half-n-half Clue   3. Sodium sulfate is a normal salt whereas Sodium bisulfate is an acid salt.   True   False   4. Vinegar is very dilute _______ acid.   carbonic   acetic   phosphoric   citric   Half-n-half Clue   5. Acids are bitter in taste.   True   False   6. _______ acid is used in the manufacture of many car batteries.   Nitric   Sulfuric   Phosphoric   Hydrochloric   Half-n-half Clue   7. _______ is a basic gas which is used in the manufacture of fertilizers such as Urea.   Oxygen   Nitrogen   Chlorine   Ammonia   Half-n-half Clue