23 solutions available
Question 1(iv)Which of the following electrolyte is used in the process of nickle plating?Silver nitratePotassium argentocyanideNickle ammonium...
Question 1(v)The empirical formula of hexane isC3H7C6H14C3H8C4H12
Question 1(x)The table shown below gives information about four substances A, B, C and DSubstancepH ValueA8.7B5.5C1.7D12.3Identify the basic...
Question 1(xii)A compound which liberates reddish brown gas around the anode during electrolysis in its molten state islead (II) nitratelead (II)...
Question 2(i)Identify the following.(a) Anode used in the electro refining of copper.(b) A strong but non-volatile mineral acid.(c) Name the process...
Question 2(iii)The following diagram shows an experimental set up for the laboratory preparation of pungent choking gas. The gas is acidic in...
Question 2(iv)Complete the following by choosing the correct answers from the bracket.(a) The tendency of an atom in a molecule to attract the shared...
Question 2(v)(a) Draw the structural formula for the following.(1) 1,1-dichloroethane(2) Butyne(3) Ethan-1-al(b) Name the following organic compounds...
Question 3(i)Draw the electron dot structure for the following.(a) H2SO4(b) CO2
Question 3(ii)Distinguish between the following as directed.(a) Calcium nitrate and lead nitrate using NaOH.(b) Ferrous chloride and ferric chloride...
Question 3(iii)Name the ions present in(a) hydrogen chloride(b) lead sulphate(c) ammonium hydroxide
Question 4(ii)Write the products and balance the equation.(a) Na2CO3 + H2SO4 ⟶(b) Fe + H2SO4 ⟶
Question 4(iii)Calcium, cobalt, nitrogen, magnesium, and silicon are some elements. Using this information complete the following.(a) ..................
Question 4(iv)Give reasons:(a) Covalent compounds have low melting point.(b) For covalent bond formation both atoms should have high ionisation.(c)...
Question 5(i)Glucose or blood sugar has the molecular formula C6H12O6. Determine % of each element.
Question 5(iii)(a) State whether the following statements are true or false. Justify your answer.(1) Electrolysis of molten lead bromide is...
Question 6(i)For each of the substance given below, write the constituents and one use of the following alloys.(a) Duralumin(b) Solder
Question 6(ii)Calculate:(a) A compound contains 69.5% oxygen, 30.5% nitrogen and its molecular weight is 92. Then what will be the molecular formula...
Question 6(iii)Rahul performed an experiment for the preparation of sulphuric acid. Answer the following questions pertaining to it.(a) Name the...
Question 7(i)(a) State why ethyne burns in oxygen with a sooty flame?(b) Write the balanced chemical equation when water is added to calcium carbide.
Question 8(i)(a) Propane burns in air according to the following equation.C3H8 + 5O2 ⟶ 3CO2 + 4H2OWhat volume of propane is consumed on using 1000...
Question 8(ii)(a) State the condition required for the following reactions.(1) Conversion of methyl chloride to dichloromethane.(2) Conversion of...
Question 8(iii)Write the steps required to convert hydrogen chloride to anhydrous iron (III) chloride. Also, write the equations for the reactions.