All your burette readings (initials and final) as well as the size of your pipette must be recorded but no account of experimental procedure is required. All calculations must be done in your answer booklet A solution of…
See more
2016
All your burette readings (initials and final) as well as the size of your pipette must be recorded but no account of experimental procedure is required. All calculations must be done in your answer booklet C is a mıxtur…
See more
2016
All your burette readings (initials and final) as well as the size of your pipette must be recorded but no account of experimental procedure is required. All calculations must be done in your answer booklet(a) What diffe…
See more
2016
(a)(i) Determine the oxidation number of sulphur in Na\(_2\)S\(_2\)O\(_3\)(ii) Name the allotropes of sulphur.(iii) State two ways in which the structure of graphite and diamond are similar.(b)(i) Name two green-house ga…
See more
2016
(a)(i) Name a suitable drying agent for the preparation of carbon (IV) oxide in the laboratory.(ii) Using one chemical test, distinguish between carbon (II) oxide and carbon (IV) oxide.(b)(i) Describe briefly how oxygen…
See more
2016
(a) (i) Draw the structures of the isomers of the alkene with molecular formurat C\(_4\)H\(_8\)(ii) State the class of alkanols to which each of the following compounds belongs:I. CH\(_3\)C(CH\(_3\))\(_2\)OH;II. CH\(_3\)…
See more
2016
(a) Consider the following atoms: \(^R_T\)X; \(^S_T\)X.(i) State the phenomenon exhibited by the two atoms.(ii) What is the difference between the atoms?(iii) Give two examples of elements that exhibit the phenomenon sta…
See more
2016
(a) What are nucleons?(b) State Graham's law of diffusion.(c) Explain briefly why aluminium does not corrode easily.(d) State three examples of periodic properties.(e) State two reasons why real gases deviate from ideal…
See more
2016
The following atoms of carbon 126C, 136C and 146C can be described as?
See more
2016
The boiling points of HF, H2O and NH3 increase in the order of
See more
2016
How many electron are present in 94Be2+?
See more
2016
An atom X consist of 6 protons, 6 electrons and 7 neutrons. Which of the following representations of the atom is correct?
See more
2016
Which of the following arrangements shows increasing order of reactivity of the halogens?
See more
2016
An unsaturated solution differs from a saturated solution at a given temperature because it
See more
2016
Aluminium is used in the manufacture or aircraft because it
See more
2016
Metals can be stretched into wires because they are
See more
2016
The mass of potassium hydroxide required to make 300.ocm3 of 0.4 moldm-3 solution is {KOH = 56.0}
See more
2016
An element X froms the following oxides X2O, XO and XO2. This phenomenon illustrates the law of________?
See more
2016
The bond formed between H2O and H+ to form the hydroxonium H3O+ is
See more
2016
Which of the following elements would produce coloured ion in agueous solution?