alleryStart learning →A solution with a pH less than 7 is:
- acidic
- neutral
- basic
- always pure water
Show answer and solution
Correct answer: A. acidic
pH below 7 means the solution is acidic.
Indian Navy 10+2 B.Tech Cadet Acids Bases Salts — practice questions
Explore 3 free Acids Bases Salts questions in Indian Navy 10+2 B.Tech Cadet Science. Open each question or exercise to read its content, reference answers and available explanation.
Practise Acids Bases Salts with Quill →Acids Bases Salts questions and exercises with answers
Showing questions 1–3 of 3.
Worked practice questions
Phenolphthalein in a sodium hydroxide solution is:
- colourless
- red
- pink
- yellow
Show answer and solution
Correct answer: C. pink
NaOH is a strong base.
Phenolphthalein is colourless in acid and pink in base — so it turns pink.
Hydrochloric acid and acetic acid of the same concentration are compared. Which is the stronger acid?
- stronger HCl
- cannot say
- stronger acetic
- both equal
Show answer and solution
Correct answer: A. stronger HCl
HCl fully dissociates in water; acetic acid only partly.
**So HCl gives more H⁺ per mole and is the stronger acid.**
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