Jamb Chemistry Past Questions For Year 2018
Question 76
Calculate the percentage composition of oxygen in calcium trioxocarbonate(IV) [Ca=40, C=12, O=16]
- A. 16
- B. 48
- C. 40
- D. 12
Question 77
H\(_2\) S\(_{(g)}\) + Cl\(_{2(g)}\) → 2HCl\(_{(g)}\) + S\(_{(g)}\) In the reaction above, the substance that is reduced is
- A. H\(_2\)S
- B. S
- C. HCl
- D. Cl\(_2\)
Question 78
The elements in the periodic table are listed in order of increasing
- A. relative atomic number
- B. atomic mass
- C. relative isotopic mass
- D. nuclear charge
Question 79
The alkanoic acid found in human sweat is
- A. CH\(_3\)-COOH
- B. CH\(_3\)—CH\(_2\)—COOH
- C. H-COOH
- D. CH\(_3\)
Question 80
The general formula of alkanones is
- A. RCHO
- B. R\(_2\)CO
- C. RCOOH
- D. RCOOR
