Worksheets › Class 10 › Acids, Bases and Salts
Class 10 Acids, Bases and Salts worksheet
CBSE Science. Indicators, pH, neutralisation, salts and water of crystallisation. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
What colour is phenolphthalein in dilute sulphuric acid?
- colourless
- red
- green
- reddish-brown
Answer
(a) colourless
dilute sulphuric acid is acidic
- 2.
Solutions P, Q, R and S have pH values of 13, 10, 9, 8 respectively. Which has the highest concentration of hydrogen ions?
- P
- Q
- S
- R
Answer
(c) S
the lowest pH is the most acidic (most H⁺ ions)
- 3.
Acids turn blue litmus:
- green
- blue
- colourless
- red
Answer
(d) red
Section B · short answer
- 4.
Write the balanced equation for the reaction of nitric acid with potassium hydroxide. Name the salt formed.
Answer
HNO₃ + KOH → KNO₃ + H₂O; potassium nitrate
acid + base → salt + water
- 5.
Write the balanced equation for the reaction of calcium oxide (CaO) with dilute sulphuric acid. Name the products.
Answer
CaO + H₂SO₄ → CaSO₄ + H₂O; calcium sulphate and water
metal oxide + acid → salt + water
Section C · long answer
- 6.
What is the chlor-alkali process? Write the equation and give one use of each product.
Answer
The electrolysis of brine (sodium chloride solution): 2NaCl + 2H₂O → 2NaOH + Cl₂ + H₂. Sodium hydroxide: soaps, detergents, paper. Chlorine: disinfecting water, PVC, bleaching powder. Hydrogen: fuels, margarine, ammonia.
Fresh sheets for your child
In the app, every Acids, Bases and Salts sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
Coming soon for Android and iPhone.