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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
What is the process used to produce carbon black?
a) Heating wood at high temperature without air
b) Heating coal in the absence of air
c) Burning Hydrocarbons with limited air supply
d) Heating coal in the presence of air
Option c – Burning Hydrocarbons with limited air supply
What is the main application of hydrofluoric Acid?
a) For etching glass surfaces
b) As a bleaching substance
c) As a powerful oxidizer
d) For producing fluorinated Organic compounds
Option a – For etching glass surfaces
Which options correctly describe the behavior of Acids, acidic oxides, and acidic Salts?
a) (A) and (B)
b) (B) and (C)
c) (C) and (D)
d) (A) and (D)
Option b – (B) and (C)
Which statements are accurate? A. Baking soda is an acidic Salt, while washing soda is basic. B. Common Salt in water does not alter red or blue litmus. C. Amla has a sour taste; soap solution tastes bitter. D. Spinach extract does not change blue litmus color.
a) A, B and C
b) A and C
c) B and C
d) B and D
Option c – B and C
Evaluate the following: A. Soap solution is basic. B. Soap solution is acidic. C. Turmeric has a natural indicator. D. Turmeric has litmus.
a) A and C
b) B and D
c) C and B
d) A and D
Option c – C and B
Which characteristic describes toothpaste?
a) Acidic in nature
b) Chemically neutral
c) Basic in nature
d) Composed of calcium phosphate
Option c – Basic in nature
What are the products 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
Which Acid is found naturally in tomatoes?
a) Acetic Acid
b) Citric Acid
c) Tartaric Acid
d) Oxalic Acid
Option d – Oxalic Acid
What is brine?
a) Aqueous solution of sodium hydroxide
b) Aqueous solution of sodium carbonate
c) Aqueous solution of sodium chloride
d) Aqueous solution of sodium bicarbonate
Option c – Aqueous solution of sodium chloride
What occurs when an acid solution and a Base solution are mixed?
a) (i) and (iv)
b) (i) and (iii)
c) (ii) only
d) (ii) and (iv)
Option d – (ii) and (iv)
Why is hydrogen chloride gas passed through a guard tube containing calcium chloride during preparation on humid days?
a) To trap the gas produced
b) To humidify the gas
c) To remove moisture from the gas
d) To absorb chloride ions from the gas
Option c – To remove moisture from the gas
Which of these Salts lacks water of crystallisation?
a) Blue vitriol
b) Baking soda
c) Washing soda
d) Gypsum
Option b – Baking soda
Which sequence shows correct increasing acidic strength?
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 < Acetic acid < Hydrochloric acid
What are antacids?
a) Base
b) Acid
c) Salt
d) Buffer
Option a – Base
Review the following: 1. Nitric acid is used in fertilizers. 2. Sulphuric acid is used in explosives.
a) Only 1
b) Only 2
c) Both 1 and 2
d) Neither 1 nor 2
Option c – Both 1 and 2
Analyze the statements: I: Adding water to HCl solution lowers its pH. II: Water reduces ionization of HCl.
a) Both are true, and II explains I
b) Both are true, but II does not explain I
c) I is true, II is false
d) I is false, II is true
Option c – I is true, II is false
Why does fresh groundwater show a lower pH when exposed to air?
a) Carbon dioxide from air dissolves in it
b) Oxygen from air dissolves in it
c) Dissolved CO₂ escapes from it
d) Dissolved O₂ escapes from it
Option a – Carbon dioxide from air dissolves in it
Why doesn’t hard water lather with soap?
a) It contains Ca²⁺ and Mg²⁺ that form scum with soap
b) It has sulfate and chloride ions forming precipitates
c) The water’s pH is too high
d) The water’s pH is too low
Option a – It contains Ca²⁺ and Mg²⁺ that form scum with soap
After evaporating hard water, what causes the white residue left behind?
a) 1 and 2 only
b) 1, 2 and 3
c) 3 only
d) 1 and 3 only
Option b – 1, 2 and 3
Four test tubes A, B, C, and D contain water, alkali, acid, and Salt solution respectively. Which turns phenolphthalein pink?
a) test tube A
b) test tube B
c) test tube C
d) test tube D
Option b – test tube B
Why is calamine effective against ant bites? Identify substance X (released from bite) and Y (in calamine):
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
How many water molecules are associated with two units of CaSO₄ in plaster of Paris?
a) One
b) Two
c) Five
d) Ten
Option a – One
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