The chapter "Acid, Bases and Salts" is a cornerstone of Class 10 Chemistry, forming the foundation for understanding chemical reactivity and the nature of substances we encounter daily. It introduces students to the concept of and ions, the pH scale, and the fascinating world of neutralization reactions. Mastering this chapter is essential for scoring well in the CBSE Board Exams, as it frequently features in both objective and descriptive sections, including case-study based questions.
Beyond academic success, this chapter provides scientific explanations for everyday phenomena, such as why curd is not stored in copper vessels, how antacids relieve indigestion, and the chemistry behind the "fizz" in soda. This quiz is meticulously designed to align with the latest NCERT curriculum and CBSE 2024-25 pattern, covering everything from indicator changes to the industrial preparation of salts like Bleaching Powder and Plaster of Paris.
30
Minutes
30
Questions
1 / -0
Marking
Q1. Which of the following indicators turns red in an acidic solution?
Phenolphthalein
Methyl orange
Turmeric
China rose petals
Q2. When a zinc metal piece is added to solution and heated, which gas is evolved?
Q3. What is the chemical name of the salt produced when calcium hydroxide reacts with carbon dioxide?
Calcium bicarbonate
Calcium carbonate
Calcium oxide
Calcium chloride
Q4. Which of the following is a "Mineral Acid"?
Citric acid
Acetic acid
Hydrochloric acid
Tartaric acid
Q5. An aqueous solution turns red litmus solution blue. Excess addition of which of the following solutions would reverse the change?
Baking powder
Lime
Ammonium hydroxide solution
Hydrochloric acid
Q6. Which of the following gives the correct order of increasing acid strength?
Water < Acetic acid < Hydrochloric acid
Water < Hydrochloric acid < Acetic acid
Acetic acid < Water < Hydrochloric acid
Hydrochloric acid < Water < Acetic acid
Q7. What is the pH range of the human body for its normal functioning?
5.0 to 5.8
7.0 to 7.8
6.0 to 6.8
8.2 to 9.2
Q8. Sodium hydrogen carbonate () is commonly known as:
Washing soda
Baking soda
Bleaching powder
Plaster of Paris
Q9. Which substance is used for disinfecting drinking water to make it free of germs?
Q10. What happens when a solution of an acid is mixed with a solution of a base in a test tube?
(i) The temperature of the solution increases.
(ii) The temperature of the solution decreases.
(iii) The temperature of the solution remains the same.
(iv) Salt formation takes place.
(i) only
(i) and (iii)
(ii) and (iii)
(i) and (iv)
Q11. The pH of a sample of pure water is 7. If some is added to it, the pH will:
Decrease
Increase
Remain 7
Become 0
Q12. Which of the following is an olfactory indicator?
Litmus
Turmeric
Vanilla essence
Phenolphthalein
Q13. Copper sulphate crystals () on heating turn from:
Blue to White
White to Blue
Blue to Green
Green to White
Q14. Chemical formula of Plaster of Paris is:
Q15. Which of the following salts does not contain water of crystallization?
Blue vitriol
Baking soda
Washing soda
Gypsum
...and 15 more challenging questions available in the interactive simulator.