Question
Identify the following
Identify the following: (a) An element in period 1 which can be placed in both group 1 and group 17 of the…
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Question
Arrange the following as per the instructions given in the brackets
Arrange the following as per the instructions given in the brackets: (a) Carbon, Fluorine, Beryllium (decreasing order of atomic size) (b) Sulphuric…
Question
Give reasons for the following: (a) Inert gases do not form ions. (b) Covalent compounds have a low melting and boiling point.
Give reasons for the following: (a) Inert gases do not form ions. (b) Covalent compounds have a low melting and boiling point.
Question
From the above reactions X or Y, identify the reaction which exhibits electrolytic dissociation and ionization
X – HCl ⇋ H1+ + Cl– (in solution state) Y – PbBr2 ⇋ Pb2+ + 2Br1- (in molten state) From the…
Question
Identify the gas evolved in each of the following reactions
Identify the gas evolved in each of the following reactions: (a) Methane undergoes complete combustion. (b) Copper carbonate is heated. (c) MnO2…
Question
Calcium carbonate reacts with dilute hydrochloric acid as given below
Calcium carbonate reacts with dilute hydrochloric acid as given below: (a) What is the mass of 5 moles of calcium carbonate? (Relative…
Question
Differentiate between the following pairs based on the criteria given
Differentiate between the following pairs based on the criteria given: (a) Sulphuric acid and Nitric acid (using barium chloride solution) (b) Unsaturated…
Question
Name the main metal used in making of the alloys given below
Name the main metal used in making of the alloys given below: (a) Duralumin (b) Stainless steel
Question
Choose the organic compound from the list given below to answer the following questions
Choose the organic compound from the list given below to answer the following questions: Ethene, Ethanoic acid, Ethanol, Methanal (a) The compound…
Question
Complete and balance the following equations
Complete and balance the following equations: (a) Al2O3 + 2NaOH ⟶ (b) C2H5COONa + NaOH ⟶ (c) C2H4Br2 + alcoholic KOH ⟶