Class 7 Science: Acids, Bases, and Salts Worksheet
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Q1 · MCQ · 1 mark
Which of the following is an example of a natural indicator?
Q2 · MCQ · 1 mark
A substance that tastes sour and turns blue litmus red is generally a/an:
Q3 · MCQ · 1 mark
When an ant bites, it injects which acid into the skin?
Q4 · FILL · 1 mark
Bases are generally ____ in taste and feel ____ to touch.
Q5 · MCQ · 1 mark
Which of the following is used to treat indigestion caused by excess acid in the stomach?
Q6 · FILL · 1 mark
The reaction between an acid and a base is called ____.
Q7 · SHORT · 2 marks
What is the role of an indicator in determining whether a substance is acidic or basic?
Q8 · MCQ · 1 mark
What colour does phenolphthalein indicator turn in a basic solution?
Q9 · FILL · 1 mark
Salt and ____ are produced during a neutralization reaction.
Q10 · SHORT · 2 marks
Why is it important to neutralize acidic soil for plant growth?