Question : Which of the following bases is found in lime water?
Option 1: Calcium hydroxide
Option 2: Potassium hydroxide
Option 3: Magnesium hydroxide
Option 4: Ammonium hydroxide
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Correct Answer: Calcium hydroxide
Solution : The correct answer is Calcium hydroxide.
Lime water contains calcium hydroxide, which is a strong base. The chemical formula for calcium hydroxide is Ca(OH)2. When calcium oxide (quicklime) reacts with water, it forms calcium hydroxide, resulting in lime water. The hydroxide ions (OH⁻) from calcium hydroxide make it a base.
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Question : The metallic contituents of hard water are:
Option 1: Magnesium calcium and tin
Option 2: Iron ,tin and calcium
Option 3: Calcium ,magnesium and iron
Option 4: Magnesium ,tin and iron
Question : Silicon dioxide is found mostly in which of the following?
Option 1: Sand
Option 2: Sugar
Option 3: Salt
Option 4: Slaked lime
Question : Which of the following is not soluble in water?
Option 1: Lead sulphate
Option 2: Zinc sulphate
Option 3: Potassium sulphate
Option 4: Sodium sulphate
Question : Which mineral salt is dissolved in a major amount in ocean water?
Option 1: Calcium chloride
Option 2: Calcium carbonate
Option 3: Sodium chloride
Option 4: Calcium sulphate
Question : Which potassium acid salt is obtained as a by-product of alcohol manufacture during fermentation?
Option 1: Potassium Citrate
Option 2: Potassium bitartrate
Option 3: Potassium nitrate
Option 4: Potassium hydrogen adipate
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