Question
Give balanced equations for the following
Give balanced equations for the following: (a) Action of dilute hydrochloric acid on ammonium carbonate. (b) Oxidation of sulphur with hot concentrated…
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Question
Ammonia gas is passed over heated copper (II) oxide in a combustion tube
Ammonia gas is passed over heated copper (II) oxide in a combustion tube: (a) Name the gas evolved. (b) What will be…
Question
Name the element with the highest ionisation potential
Given below are two sets of elements from two different periods. Name the element with the highest ionisation potential in each of…
Question
Study the table given below and answer the questions
Study the table given below. Use only the letters given in the table to answer the questions. Do not identify the elements.…
Question
Name the gas produced during each of the following reactions
Name the gas produced during each of the following reactions: (a) When copper is treated with hot, concentrated nitric acid. (b) When…
Question
Complete and balance the following equations
Complete and balance the following equations: (a) (b)
Question
A gas cylinder can hold 150 g of hydrogen under certain conditions
A gas cylinder can hold 150 g of hydrogen under certain conditions of temperature and pressure. If an identical cylinder with the…
Question
Give one significant observation when
Give one significant observation when: (a) Barium chloride solution is added to zinc sulphate solution. (b) Lead nitrate is heated strongly. (c)…
Question
Reaction between concentrated sulphuric acid and magnesium
The reaction between concentrated sulphuric acid and magnesium can be represented by the equation given below: Mg + 2H2SO4 ⟶ MgSO4 +…
Question
Justify the following statements
Justify the following statements: (a) Anode is known as the oxidizing electrode. (b) Graphite electrodes are preferred in the electrolysis of molten…