23 solutions available
Question 1(ii)The bond between carbon and hydrogen in a molecule of methane issingle covalent bonddouble covalent bondtriple covalent bondionic bond
Question 1(iii)During the Ostwald's process, the gaseous reactants used arenitrogen and oxygenoxygen and carbon dioxidechlorine and nitrogenammonia...
Question 1(viii)The base that neutralizes the acidity in stomach and acts as an antacidAmmonium hydroxideAluminium hydroxideMagnesium...
Question 1(ix)Reaction of zinc metal with sodium hydroxide will lead to the formation ofsodium zincatesodium chloridezinc hydroxidezinc aluminate
Question 1(x)The 'n' of CH3 is 3. Then, the molecular formula isC3H6C3H9CHCH9
Question 1(xi)During the electrolysis of aqueous copper sulphate using copper electrodes, copper ions are generated at the anode that go into the...
Question 1(xiii)During electrolytic reduction of molten alumina, aluminium metal is obtained atcarbon cathodecarbon anodealuminium anodealuminium...
Question 1(xv)The atomic masses of nitrogen (N), oxygen (O) and neon (Ne) are approximately 14, 16 and 20.18 respectively.Which of the following...
Question 2(i)The diagram shows an experimental set up for the laboratory preparation of a gas known as marsh gas. It is also present in the air...
Question 2(ii)Complete the following by choosing the correct answer from the bracket.(a) On moving down the group electron affinity ..................
Question 2(v)(a) Draw the structural formula for the following.(1) But-1-ene(2) Butanoic acid(3) Propanol(b) Name the following organic compounds in...
Question 3(i)Identify the reactant and write the balanced equation for the following.Sodium ethanoate reacts with compound Q to give a strong base...
Question 3(iv)(a) State whether the following statements are True or False. Justify your answer.(1) According to Mendeleev, periodic properties of...
Question 4(i)Define:(a) Covalent bond(b) Co-ordinate bond
Question 4(ii)SolveA compound has the following percentage composition by mass, carbon 14.4%. hydrogen 1.2% and chlorine 84.5%. Determine the...
Question 4(iii)State the conditions required for the following reactions(a) Conversion of potassium nitrate to potassium bisulphate.(b) Conversion of...
Question 5(iv)X [Oxygen, Sulphur, Selenium] and Y [Neon, Argon, Xenon] are two sets of elements. Using these elements complete the following.(a) Set...
Question 6(ii)Calculate:(a) The mass of 12.044 x 1023 oxygen atoms.(b) What is the vapour density of ethylene?
Question 7(ii)Consider the elements 8B, 20A. What type of bond will be formed when element B and A react with each other. Also find out in which...
Question 7(iii)(a) List any two uses of ammonia.(b) Give the balanced equations for the following conversionsAmmonia solution to an amphoteric...
Question 8(ii)The empirical formula and molecular mass of a compound are CH2O and 180 g respectively. What will be the molecular formula of the...
Question 8(iii)Choose the most appropriate option from the following list of elements which fit in the description. Each option may be used only...
Question 8(iv)Give balanced equations for the following:(a) Preparation of ethane from iodomethane.(b) Preparation of ethyne from calcium carbide.(c)...