MCQ of Acid Base and Salts Class 10. We covered all the MCQ of Acid Base and Salts Class 10 in this post for free so that you can practice well for the exam.
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MCQ on Acid Base and Salts for Class 10 Students
How is carbon black obtained?
(a) By heating wood at a high temperature in absence of air
(b) By heating coal at a high temperature in absence of air
(c) By burning hydrocarbons in a limited supply of air
(d) By heating coal at a high temperature in presence of air
Option c – By burning hydrocarbons in a limited supply of air
The principal use of hydrofluoric acid is
(a) in etching glass
(b) as a bleaching agent
(c) as an extremely strong oxidizing agent
(d) in the preparation of strong organic fluorine compounds
Option a – in etching glass
Acids, acidic oxide and acidic salts (A) will turn red litmus blue (B) will turn blue litmus red (C) will turn pH paper orangish red (D) will turn pH paper green
(a) (A) and (B)
(b) (B) and (C)
(c) (C) and (D)
(d) (A) and (D)
Option b – (B) and (C)
Consider the following statements. A. Baking soda is an acidic salt whereas washing soda is a basic salt. B. The aqueous solution of common salt does not change the colour of either red litmus solution or blue litmus solution. C. Amla tastes sour whereas soap solution is bitter in taste. D. The water extract of spinach does not change the colour of the blue litmus solution. Which alternative has the correct statements? (a) A, B and C (b) A and C (c) B and C (d) B and D A. soap solution is alkaline. B. soap solution is acidic. C. turmeric contains a natural indicator. D. turmeric contains litmus.
(a) A and C
(b) B and D
(c) C and B
(d) A and D
Option c – C and B
Which of the following properties is true for toothpaste?
(a) It is acidic
(b) It is neutral
(c) It is basic
(d) It is made up of Calcium phosphate, the material of tooth enamel
Option c – It is basic
What is formed when zinc reacts with sodium hydroxide?
(a) Zinc hydroxide and sodium
(b) Sodium zincate and hydrogen gas
(c) Sodium zinc-oxide and hydrogen gas
(d) Sodium zincate and water
Option b – Sodium zincate and hydrogen gas
Tomato is a natural source of which acid?
(a) Acetic acid
(b) Citric acid
(c) Tartaric acid
(d) Oxalic acid
Option d – Oxalic acid
Brine is an
(a) an aqueous solution of sodium hydroxide
(b) an aqueous solution of sodium carbonate
(c) an aqueous solution of sodium chloride
(d) an aqueous solution of sodium bicarbonate
Option c – an aqueous solution of sodium chloride
What happens when a solution of an acid is mixed with a solution of a base in a test tube? (i) Temperature of the solution decreases (ii) Temperature of the solution increases (iii) Temperature of the solution remains the same (iv Salt formation takes place
(a) (i) and (iv)
(b) (i) and (iii)
(c) (ii) only
(d) (ii) and (iv)
Option d – (ii) and (iv)
When hydrogen chloride gas is prepared on a humid day, the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to
(a) absorb the evolved gas
(b) moisten the gas
(c) absorb moisture from the gas
(d) absorb Cl- ions from the evolved gas
Option c – absorb moisture from the gas
Which one of the following salts do not contain water of crystallisation?
(a) Blue vitriol
(b) Baking soda
(c) Washing soda
(d) Gypsum
Option b – Baking soda
In terms of acidic strength, which one of the following is in the correct increasing order?
(a) Water < Acetic acid < Hydrochloric acid
(b) Water < Hydrochloric acid < Acetic acid
(c) Acetic acid < Water < Hydrochloric acid
(d) Hydrochloric acid < Water < Acetic acid
Option a – Water
Antacids are
(a) Base
(b) Acid
(c) Salt
(d) Buffer
(e) None of the above
Option a – Base
Consider the following statements 1. Nitric acid is used in the production of fertilizers. 2. Sulphuric acid is used in the production of explosives. Which of the statements given above is/are correct?
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
Option c – Both 1 and 2
Statement I: The addition of water to an aqueous solution of HCI decreases the pH. Statement II: The addition of water suppresses the ionisation of HCI.
(a) Both the statements are individually true and Statement II is the correct explanation of Statement I
(b) Both statements are individually true but Statement II is not the correct explanation of Statement I
(c) Statement I is true, but Statement II is false
(d) Statement I is false, but Statement II is true
Option c – Statement I is true, but Statement II is false
The pH of fresh groundwater slightly decreases upon exposure to air because
(a) carbon dioxide from the air is dissolved in the water
(b) oxygen from the air is dissolved in the water
(c) the dissolved carbon dioxide of the groundwater escapes into the air
(d) the dissolved oxygen of the groundwater escapes into the air
Option a – carbon dioxide from the air is dissolved in the water
Why hard water does not give lather with soap?
(a) Hard water contains calcium and magnesium ions which form a precipitate with soap
(b) Hard water contains sulphate and chloride ions which form a precipitate
(c) the pH of hard water is high
(d) the pH of hard water is less
Option a – Hard water contains calcium and magnesium ions which form a precipitate with soap
When hard water is evaporated completely, the white solid remains in the container. It may be due to the presence of 1. Carbonates of Ca and Mg 2. Sulphates of Ca and Mg 3. Chlorides of Ca and Mg Select the correct answer using the code given below :
(a) 1 and 2 only
(b) 1, 2 and 3
(c) 3 only
(d) 1 and 3 only
Option b – 1, 2 and 3
Suppose you have four test tubes labelled as ‘A’, ‘B’, ‘C’, and ‘D’. ‘A’ contains plain water, ‘B’ contains the solution of an alkali, ‘C’ contains the solution of an acid, and ‘D’ contains the solution of sodium chloride. Which one of these solutions will turn the phenolphthalein solution pink?
(a) Solution ‘A’
(b) Solution ‘B’
(c) Solution ‘C’
(d) Solution ‘D’
Option b – Solution ‘B’
Calamine is used to reduce the irritating effect of ant bite/ sting because it reacts with (X) released due to the bite/ sting of ants with (Y) present in calamine. Then (X) and (Y) respectively are :
(a) Sodium hydrogen carbonate and formic acid
(b) Formic acid and zinc carbonate
(c) Acetic acid and common salt
(d) Hydrochloric acid and zinc oxide
Option b – Formic acid and zinc carbonate
(a) One
(b) Two
(c) Five
(d) Ten
Option a – One
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