Answers

(a) A hydrocarbon having the formula C(_{10})H(_{22}) was cracked to produce C(_6)H(_{14}) and another hydrocarbon P. (i) Give…

(a) In the Solvay process, explain briefly with equations the functions of the following substances: limestone; ammonia.  …

(a) (i) Write an equation for the reaction by which sulphur dioxide in solution could be converted to tetraoxosulphate (VI)…

(a)  State the conditions necessary for the cracking of long-chain hydrocarbons to produce more gasoline.    (b)  State two…

(a)  (i)  What is meant by hardness of water?       (ii) Describe briefly how you would determine what proportion of hardness…

(a) (i) State the important points put forward in Dalton’s atomic theory.      (ii) How does the theory explain the law of…

(a) Explain briefly why (_2^4He) has a stable electron configuration compared to (_4^9Be)  (b) Consider the following elements: 1H…

(a) (i)  Name three different methods for preparing salts.      (ii) Give one example of a balanced equation for each of the…

(a)   Outline the procedures for the treatment of water for town supply.      (b) (i)  State two main…

(a)        (i)  List two gaseous pollutants that can be generated by burning coal.             (ii)   Explain briefly why…