If an element R belongs to the same group as sodium, an aqueous solution of ROH will?
A. be neutral B. be acidic C. be coloured D. have pH greater than 7 E. turn back litmus red Correct Answer: Option D – have pH greater than 7
An atom 17 protons, 17 electrons and 18 neutrons has a mass number of?
A. 17 B. 18 C. 34 D. 35 E. 52 Correct Answer: Option D – 35
Lead and tin are the components of?
A. steel B. bronze C. brass D. dentist amalgam E. soft solder Correct Answer: Option E – soft solder
Which of the following is an ore of aluminium?
A. Haematite B. Magnetite C. Siderite D. Bauxite E. Cassiterite Correct Answer: Option D – BauxiteProducts
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