(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

The one which is composed of all the three kinds of bond.[ionic, covalent and coordinate bond]

Elements A, B and C have atomic number 17, 19 and 10 respectively.

State which one is a metal.

Elements A, B and C have atomic number 17, 19 and 10 respectively.

State which one is chemically inert.

Elements A, B and C have atomic number 17, 19 and 10 respectively.

Write down the formula of the compound formed by two of the above elements.

Select the correct answer from A, B, C, D and E.

A compound which in the aqueous solution state, is neutral in nature.

Complete the following blank in the equation as indicated.

\[\ce{CaH2_{(s)} + 2H2O_{( aq)}-> Ca(OH)2_{(s)} + 2H2_{(g)}}\]

Grams: 42 g + ______ `→` ______ + ______

Complete the following blank in the equation as indicated.

\[\ce{CaH2_{(s)} + 2H2O_{( aq)}-> Ca(OH)2_{(s)} + 2H2_{(g)}}\]

Molecules: 6.02 × 10²³ + ______ `→` ______ + ______

Potassium sulfite on reacting with hydrochloric acid releases _______ gas. (Cl₂, SO₂, H₂S)

Identify the substance underlined, in the following case:

Cation that does not form a precipitate with ammonium hydroxide but forms one with sodium hydroxide.

Identify the substance underlined, in the following case

An organic compound containing – COOH functional group

Write a balanced chemical equation for the following:

Action of cold and dilute Nitric acid on Copper

State one relevant observation for given reactions:

Action of dilute Hydrochloric acid on iron (II) sulfide.

State one relevant observation for given reactions:

Action of Sodium hydroxide solution on ferrous sulfate solution.

Draw the structural formula for Diethyl ether

A compound of X and Y has the empirical formula XY₂. Its vapor density is equal to its empirical formula weight. Determine its molecular formula.

Write balanced chemical equations to show The behavior of H₂SO₄ as an acid when it reacts with Magnesium

Propane burns in air according to the following equation: 

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

What volume of propane is consumed on using 1000 cm³ of air, considering only 20% of air contains oxygen?

Give a balanced chemical equation for Laboratory preparation of Nitric acid.

Identify the term or substance based on the descriptions given below

Ice like crystals formed on cooling an organic acid sufficiently.

Identify the term or substance based on the descriptions given below:

The property by virtue of which the compound has the same molecular formula but different structural formulae.