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THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL
CERTIFICATE OF SECONDARY EDUCATION EXAMINATION
032/1 CHEMISTRY 1
(For Both School and Private Candidates)
Time: 3 Hours Thursday, 06th November 2014 p.m.
Instructions
Atomic masses:
H = 1, C = 12, N = 14, Na = 23, S = 32, O = 16, Al = 26, Cl = 35.5 Ca = 40, Mn = 55, Fe = 56, K = 39.
Avogadro’s number = 6.02 x 1023.
GMV at s.t.p. = 22.4 dm3.
1 faraday = 96,500 coulombs.
Standard pressure = 760 mm Hg.
Standard temperature = 273 K.
1 litre = 1 dm3 = 1000 cm3.
Answer all questions in this section.
1. For each of the items (i) – (x), choose the correct answer from the given alternatives and write its letter beside the item number in the answer booklet provided.
(i) An element in the periodic table with atomic number 18 belongs to which of the following?
(ii) The ionic equation when aqueous ammonium chloride reacts with sodium hydroxide solution is represented as:
(iii) The reason why white anhydrous copper (II) sulphate turns blue when exposed in atmosphere is that it,
(iv) Chemical change means;
(v) If a stead current of 2 amperes was passed through an aqueous solution of iron (II) sulphate for 15 minutes, then the mass of iron deposited at the cathode will be:
(vi) 10 cm3 of 0.4 M sodium hydroxide are added to 40 cm3 of 0.2 M hydrochloric acid. The resulting mixture will be
(vii) The only metal which does not react with dilute hydrochloric acid is
(viii) Which of the following solutions is the most concentrated?
ix) Alcohols react with carboxylic acids to form a group of organic compounds called
(x) Which of the following statement is true about water gas?
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