Na2CO3 reacts with HCl to give ____ along with water.

Correct! Wrong!

Youtube shikshahouse

Na2CO3 reacts with HCl to give NaCl and CO2 along with water. Na2CO3 + 2HCl →2NaCl + CO2 + H2O

HCl reacts with NH4OH to give ____ and H2O.

Correct! Wrong!

HCl reacts with NH4OH to give NH4Cl and H2O.

The colour of hydrangea flowers, when the soil pH is 8.8, is ____.

Correct! Wrong!

When the soil pH is 8.8, the colour of hydrangea flowers is pink. Hydrangea flowers are blue in acidic soil and pink in basic soil.

The pH scale is actually measuring the number of H+ ions in a solution. If there are a lot of H+ions, the pH is ____.

Correct! Wrong!

The pH scale is actually measuring the number of H+ ions in a solution. If there are a lot of H+ ions, the pH is very low. A large number of H+ ions signifies a higher acidic strength.

H2CO3 is a ____.

Correct! Wrong!

H2CO3 dissociates partially. Therefore, it is a weak acid.

Which of the following can be formed when sulphuric acid reacts with sodium hydroxide?

Correct! Wrong!

NaHSO4 and Na2SO4 are formed when sulphuric acid reacts with sodium hydroxide. Sulphuric acid has two hydrogen atoms, which can be wholly or partially be replaced by NaOH to give Na2SO4 or NaHSO4. H2SO4 + NaOH → NaHSO4 + H2O (partial neutralisation) H2SO4 + 2NaOH → Na2SO4 + 2H2O (complete neutralisation)

Which of the following can have a pH value less than seven?

Correct! Wrong!

Rain water has a pH value slightly less than 7. Rain water is slightly acidic because it combines with carbon dioxide or sulphur dioxide in the air. Both carbon dioxide and sulphur dioxide are acidic oxides.

When the effect of a base is nullified by an acid it is known as ____.

Correct! Wrong!

When the effect of a base is nullified by an acid, it is known as a neutralization reaction.

Which of the following pH values corresponds to an acidic solution?

Correct! Wrong!

A solution with pH 3 is acidic in nature. The pH range of acidic solutions is 0 - 7.

The pH scale was proposed by ____.

Correct! Wrong!

The pH scale was proposed by Sorenson.

The action of dilute H2SO4 on ZnO gives ____.

Correct! Wrong!

The action of dilute H2SO4 on ZnO gives ZnSO4. ZnO + H2SO4 → ZnSO4 + H2O

pH of aqueous solution of NaCl is ____.

Correct! Wrong!

pH of aqueous solution of NaCl is 7. Aqueous solution of NaCl is neutral. This because the salt NaCl is formed from a strong acid HCl and strong base NaOH. The aqueous solution of the salt formed by strong acid and strong base is neutral.

The pH of ____ is less than seven.

Correct! Wrong!

The pH of gastric juice is less than seven. Gastric juice has hydrochloric acid. Therefore, its pH is less than 7.

Which of the following pH values corresponds to acidic solution?

Correct! Wrong!

A solution with pH 3 is acidic in nature. The pH range of acidic solutions is 0 - 7.

When a solution of pH 11 is diluted, then its pH ____.

Correct! Wrong!

When a solution of pH 11 is diluted, then its pH decreases. This is because the concentration of OH- ions decreases.

CH3COOH reacts with NaOH to give ____.

Correct! Wrong!

CH3COOH reacts with NaOH to give sodium acetate (CH3COONa). CH3COOH + NaOH →CH3COONa+H2O

NH4OH is a ____.

Correct! Wrong!

NH4OH is a weak base, since, it dissociates to a small extent producing a fewer number of OH−ions in solution.

The ratio of Na2SO3 and HCl in the formation of NaCl and SO2 is ____.

Correct! Wrong!

One molecule of Na2SO3 combines with 2 molecules of HCl in the formation of NaCl and SO2. Hence, the ratio is 1:2. Na2SO3 + 2HCl → 2NaCl + SO2 ↑ + H2O

NH4OH + HCl →NH4Cl + H2O2Q Milk contains a ____.

Correct! Wrong!

Milk contains a weak acid called lactic acid.

ICSE Class 10th Chemistry 11 - Internal Assesment of Practical MCQs
Poor

Average

Good

Excellent

Share your Results:

Date
Reviewed Item
ICSE Class 10th Chemistry 11 - Internal Assesment of Practical MCQs
Author Rating
51star1star1star1star1star