Chemistry 10th Class English Medium Unit 10 Online Test With Answers

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Chemistry 10th Class English Medium Unit 10 Online Test

Sr. # Questions Answers Choice
1 Citric acid is present in Citrus fruits Sour milk Rancid butter Apple
2 Which acid used for food preservation? H<sub>2</sub>SO<sub>4</sub> HNO<sub>3</sub> HCl CH<sub>3</sub>COOH
3 Which acid is used for etching designs on copper plates? H<sub>2</sub>SO<sub>4</sub> HNO<sub>3</sub> HCl CH<sub>3</sub>COOH
4 Which acid is used an electrolyte in lead storage battery? H<sub>2</sub>SO<sub>4</sub> HNO<sub>3</sub> HCl CH<sub>3</sub>COOH
5 Which one of the mineral acid. HCl H<sub>2</sub>SO<sub>4</sub> HNO<sub>3</sub> All of these
6 When acid reacts with sulphites and Bi sulphates which gas is evolved? H2 CO<sub>2</sub> SO<sub>2</sub> NH<sub>3</sub>
7 When acid react with carbonates and bicarbonates which gas is evolved? H2 CO<sub>2</sub> Cl<sub>2</sub> N<sub>2</sub>
8 When acids react with metals which gas is evolved? H<sub>2</sub> O<sub>2</sub> Cl<sub>2</sub> N<sub>2</sub>
9 Which one is Lewis Acid? BF<sub>3</sub> AICI<sub>3</sub> FeCl<sub>3</sub> All of these
10 A product of any Lewis acid base reaction is a single specie called. Salt Water Adduct None of these
11 According to Lewis concept a base is a substance which can donate. Proton Electron pair Neutron Electron
12 A substance which can behave as an acid as well as a base is called. Acid Base Amphoteric Neutral
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