Strength of Acids and BasesPractice Questions & MCQs
Practice Strength of Acids and Bases questions from Acids, Bases and Salts (Class 10 Science) - important MCQs with answers and step-by-step solutions. Solve the sample questions below, then practice the full set free on the RankByte app.
Strength of Acids and BasesQuiz - Solve & Score
Q1. Which of the following is a strong acid (NCERT)?
- A.citric acid
- B.carbonic acid
- C.acetic acid
- D.sulphuric acid
Answer: D. sulphuric acid
We are told that the numerical data stated in the question (chemistry, chapter 'Acids, Bases and Salts'). Our target: the unknown asked. From the chapter we use the relation: hence answer = sulphuric acid. Acids release H+ and have pH < 7. Matching this against the options, D) sulphuric acid is the answer. As for the others, option A) 'citric acid' doesn't hold - Citric acid is weak; option B) 'carbonic acid' fails since Carbonic acid is weak.
Q2. Which of the following is a weak base (NCERT)?
- A.barium hydroxide
- B.potassium hydroxide
- C.sodium hydroxide
- D.ammonium hydroxide
Answer: D. ammonium hydroxide
Q3. Which solution has the lowest pH at equal concentration (NCERT)?
- A.carbonic acid
- B.hydrochloric acid
- C.acetic acid
- D.water
Answer: B. hydrochloric acid
What's the underlying rule? PH = -log[H+] is the defining relation; substituting the given hydrogen-ion concentration into this expression => pH reduces to the listed numerical value; therefore the required answer = hydrochloric acid. Does that line up with one of the options? Yes - Correct. And the rest? option A) 'carbonic acid' is incorrect: Weak acid; higher pH; option C) 'acetic acid' is incorrect: Weak acid; higher pH than HCl. Pick: B) hydrochloric acid.
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