ICSE Class 10th Chemistry 3 – Study of Acids, Bases and Salts MCQs

Which of the following is different from others?

Correct! Wrong!

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SO2 is different from others. SO2 is acidic in nature while the remaining are basic.

Which gas is liberated when acids react with metals?

Correct! Wrong!

When acids react with metals, hydrogen in acids is liberated as hydrogen gas. Acid + Metal →Metal salt + Hydrogen

The purple colour of cabbage ____ when it is dipped in an acid.

Correct! Wrong!

The purple colour of cabbage turns red when it is dipped in an acid.

Which of the following is a property of acids?

Correct! Wrong!

Acids liberate H+ ions when dissolved in water.

When HCl spills on skin, it leaves ____ stain on skin.

Correct! Wrong!

When HCl spills on skin, it leaves an amber stain on skin.

When acids react with metals, the hydrogen gas liberated is tested by ____.

Correct! Wrong!

When acids react with metals, the hydrogen gas liberated is tested with a burning splinter. The gas burns with a pop sound.

The substance that reacts with CO2 and produces limestone is ____.

Correct! Wrong!

CaO reacts with carbon dioxide and produces limestone. CaO + CO2 →CaCO3

H2SO4, HCl and HNO3 are generally known as ____ acids.

Correct! Wrong!

H2SO4, HCl, and HNO3 are prepared from minerals and are called mineral acids.

Bases turn red litmus ____.

Correct! Wrong!

Bases turn red litmus blue.

Vinegar is a dilute solution of ____ acid.

Correct! Wrong!

Vinegar is a dilute solution of acetic acid.

The nature of an antacid is ____.

Correct! Wrong!

The nature of an antacid is basic. An antacid neutralizes the effect of an acid.

Which of the following indicator shows no change in acids?

Correct! Wrong!

When phenolphthalein is added to an acid there is no change in its colour.

Acids are ____ to taste.

Correct! Wrong!

Acids are sour to taste.

____ indicators are substances which have different odours in acids and bases.

Correct! Wrong!

Olfactory indicators are substances which have different odours in acid and base solutions. For example, vanilla essence has characteristics of a pleasant smell in acid solution and no smell in alkali solution.

Which of the following indicators is not an acid-base indicator?

Correct! Wrong!

Vanilla is not an acid-base indicator.

The common element present in all acids is ____.

Correct! Wrong!

The common element present in all acids is hydrogen.

Zn, Al and Sn when boiled with alkali liberate ____.

Correct! Wrong!

Zn, Al and Sn when boiled with alkali liberate hydrogen gas.

Which of the following will turn blue litmus red?

Correct! Wrong!

Acids turn blue litmus red. HCl being an acid turns blue litmus red.

NaOH turns ____.

Correct! Wrong!

NaOH is a base; therefore, it turns red litmus blue.

A base is a compound that releases ____ ions when dissolved in water.

Correct! Wrong!

A base is a compound that releases OH ions in solution.

____ acid is present in curd.

Correct! Wrong!

Lactic acid is present in curd. Milk has lactic acid and since, curd is a milk product, it has lactic acid.

Alkali metal oxides are ____ in nature.

Correct! Wrong!

Alkali metal oxides are basic in nature. When they are dissolved in water they form basic solutions.

The compound formed when sodium hydroxide reacts with zinc is ____.

Correct! Wrong!

The compound formed when sodium hydroxide reacts with zinc is sodium zincate. In this reaction hydrogen gas is also liberated. 2NaOH + Zn → Na2ZnO2 + H2

____ is formed along with carbon dioxide and water, when nitric acid reacts with sodium carbonate.

Correct! Wrong!

Sodium nitrate is formed when nitric acid reacts with sodium carbonate. Na2CO3 + 2HNO3 → 2NaNO3 + H2O + CO2

Acids change the orange colour of methyl orange to ____.

Correct! Wrong!

Acids change the orange colour of methyl orange to red.

ICSE Class 10th Chemistry 3 - Study of Acids, Bases and Salts MCQs
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