| 1. | Dilute acid does not produce carbon dioxide on being treated with ? | |
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Limestone
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Marble
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Baking soda
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Lime
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Report Question| 2. | A strong acid ? | |
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Do not get ionized in water
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Partially gets ionized in water
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Completely gets ionized in water
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All the these
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| 3. | Rain is called acid rain when its ? | |
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pH falls below 6
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pH falls below 5.6
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pH falls below 7
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pH is above 7
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| 4. | Sodium hydroxide is used ? | |
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in alkaline batteries
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as a cleansing agent
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as an antacid
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in manufacture of soap
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| 5. | During the preparations of hydrogen chloride gas on a humid day, the gas is usually passed through the guard tube containing calcium chloride. the role of the calcium chloride taken in the guard tube is to ? | |
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Absorb Cl- ions from the evolved gas.
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Moisten the gas.
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Absorb the evolved gas.
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Absorb moisture from the gas.
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| 6. | Which of the following acid is also known as vinegar ? | |
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Dilute acetic acid
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Dilute tartaric acid
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Dilute sulphuric acid
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Dilute hydrochloric acid
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| 7. | A solution reacts with crushed egg-shells to give a gas that turns lime-water milkey. The solution contains ? | |
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KCl
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LiCl
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HCl
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NaCl
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| 8. | Some fruits like mango, lemon, raw grapes, orange, et(c) , have a sour taste due to the presence of ? | |
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Oxalic acid
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Lactic acid
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Citric acid
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Acetic acid
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| 9. | Phenolphthalein’s colour in basic medium is ____ but in acid it is ______ ? | |
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Blue, Red
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Pink, Orange
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Pink, Colorless
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Yellow, Pink
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| 10. | The odour of acetic acid resembles that of ? | |
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Vinegar
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Kerosene
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Burning Plastic
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Rose
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