by Sunday | Oct 11 | Chemistry JAMB
A. Phosphoric acid B. hydrochloric C. trioxonitrate (V) D. tetraoxosulphate (VI) Correct Answer: Option A – Phosphoric acid Explanation: Some acids remove rust (oxides), while others cause rust. Most acids will etch metal whether they cause rust or remove it....
by Sunday | Oct 11 | Chemistry JAMB
A. can cause injury to the nervous system B. competes with oxygen in the blood C. competes with carbon (IV) oxide in the blood D. can cause lung cancer Correct Answer: Option B – competes with oxygen in the blood
by Sunday | Oct 11 | Chemistry JAMB
A. Kerosine B. turpentine C. a solution of borax in water D. ammonia solution Correct Answer: Option C – a solution of borax in water
by Sunday | Oct 11 | Chemistry JAMB
A. 4.00 B. 2.50 C. 0.40 D. 0.25 Correct Answer: Option B – 2.50 Explanation Solubility = number of moles of solution/vol of solution 100g of water = 100 cm³ = 0.1 dm³. CuSO4 = 160g/mol No of moles of CuSO4 in 40g = 40/160 = 0.25 mol. Solubility = 0.25/0.1 = 2.5...
by Sunday | Oct 11 | Chemistry JAMB
A. amphoteric B. hygroscopic C. efflorescent D. acidic Correct Answer: Option B = hygroscopic
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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