Question
Assertion (A): The tendency of losing electrons increases down the Group
Assertion (A): The tendency of losing electrons increases down the Group. Reason (R): The most reactive metal is placed at the top…
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Question
In the reaction given below sulphuric acid acts as a/an
In the reaction given below sulphuric acid acts as a/an: S + 2H2SO4 ⟶ 3SO2 + 2H2O (a) Non-volatile acid (b) Dibasic…
Question
An organic compound has a vapour density of 22
An organic compound has a vapour density of 22. The molecular formula of the organic compound is: [Atomic weight: C = 12,…
Question
The metal whose oxide can be reduced by common reducing agents
The metal whose oxide can be reduced by common reducing agents: (a) Copper (b) Sodium (c) Aluminium (d) Potassium
Question
Which formula represents a saturated hydrocarbon?
Which formula represents a saturated hydrocarbon? (a) C4H8 (b) C5H12 (c) C4H6 (d) C5H10
Question
Which gas decolourises potassium permanganate (KMnO4) solution?
Which gas decolourises potassium permanganate (KMnO4) solution? (a) Sulphur dioxide (b) Ammonia (c) Hydrogen chloride (d) Carbon dioxide
Question
Laboratory preparation of hydrogen chloride gas
Hydrogen chloride gas is prepared in the laboratory by the action of concentrated sulphuric acid on sodium chloride. (a) Write the balanced…
Question
Match the following
Match the following: Column A Column B (a) ZnCl2 from Zn 1. Precipitation (b) KNO3 from KOH 2. Direct combination (c) CaCO3…
Question
Give balanced equations for the following
Give balanced equations for the following: (a) Copper reacts with concentrated Nitric acid. (b) Aluminium nitride is treated with warm water.
Question
Choose the correct answer from the list
Choose the correct answer from the list given below: zinc blende, C2H2, calamine, CH, haematite (a) The ore which is concentrated by…