Acids, Bases and Salts — Important Questions
Telangana Board · Class 10 · Physical Sciences
43 important questions from Acids, Bases and Salts for Telangana Board Class 10 Physical Sciences, with answers. Written for the board exams 2027.
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Important Questions from Acids, Bases and Salts
Which of the following are properties of acids? (Select all correct answers)
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Sour taste, Turn blue litmus red, Conduct electricity in solution
Acids have a sour taste, turn blue litmus red, and conduct electricity due to ion formation. Soapy touch and turning red litmus blue are properties of bases.
Which of the following can be used as natural acid-base indicators? (Select all correct answers)
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Red cabbage, Turmeric, Onion
Red cabbage, turmeric, and onion contain natural dyes that change color in acidic or basic solutions, making them natural indicators. Sugar and salt don't change color.
What happens when an acid reacts with a base?
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Salt and water are formed
When an acid reacts with a base, neutralization occurs producing salt and water. This is called a neutralization reaction: Acid + Base → Salt + Water.
Baking soda is chemically known as:
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Sodium hydrogen carbonate
Baking soda is sodium hydrogen carbonate (NaHCO₃). It is used in baking and as an antacid to neutralize excess stomach acid.
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