chemistry: exp. Test 2023

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#1. 11)When a piece of Zinc is added to diluted sulphuric acid then the evolved gas is passed in four solutions at the suitable conditions. Which of one of the following processes occurs?

#2. 13) 0.125 mol from hot conc. Sulphuric acid reacts with excess sodium nitrate. The produced nitric acid is neutralized with 200 ml of sodium hydroxide , So the concentration of sodium hydroxide equals ………. If [Molar mass of HNO3 = 63 g/ mol , H2SO4= 98 g/mol ]

#3. 14)Which one of the following represents a complete reaction …………

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