Chemistry
Paper 1 | Objectives | 50 Questions
WASSCE/WAEC MAY/JUNE
Year: 2019
Level: SHS
Time:
Type: Question Paper
Answers provided
FREE
No description provided
Feedbacks
This paper is yet to be rated
Paper 1 | Objectives | 50 Questions
WASSCE/WAEC MAY/JUNE
Year: 2019
Level: SHS
Time:
Type: Question Paper
Answers provided
No description provided
This paper is yet to be rated
Norway Kvaroy Arctic Women in Aquaculture Postgraduate Scholarship Program 2022 for African Women
Effective ways of coping with exam stress and test anxiety which is supported by Science
Adequate preparation and effective revision strategies tips to get a high score 320 in JAMB in 2022
| # | Question | Ans |
|---|---|---|
| 1. |
The periodic table is an arrangement of elements according to their? A. Oxidation number B. Atomic number C. Mass number D. Nunber of neutrons
Show Content
Detailed SolutionElements are arranged in order of increasing atomic number |
|
| 2. |
A solid with higher melting and boiling points is likely to be? A. Covalent compound B. A Dative compound C. An Electrovalent compound D. A Non-metal
Show Content
Detailed SolutionIonic Compounds / Electrovalent compounds Have A High Melting Point and High Boiling Point. |
|
| 3. |
Which of the following metals reacts slowly with cold water? A. Iron B. Silver C. Calcium D. Pottassium
Show Content
Detailed SolutionCalcium reacts very slowly with cold water |
|
| 4. |
Which of the following elements has the highest ionization energy? A. Calcium B. Chlorine C. Flourine D. Magnesium |
D |
| 5. |
The bleaching action of chlorine is through the process? A. Hydration B. Hydrolysis C. Reduction D. Oxidation
Show Content
Detailed SolutionThe bleaching action lof chlorinr is due to its ability to react with water to form oxochlorate(i)acid |
|
| 6. |
If 6.5g of magnesium ribbon reacts completely with Hydrochloric acid, how many grams of hydrogen gas would be liberated?Mg(s) + 2 HCl(aq) --> MgCl 2(aq) + H 2(g)[ H = 1.0, Mg = 24.0 ] A. 0.54g B. 0.70g C. 1.08g D. 1.40g
Show Content
Detailed Solution24g of Mg will liberate 2g of H: 6.5g of Mg will liberate Xg of H = ( 6.5 X 2 ) / 24 = 0.5416g of Hygrogen ( H ) |
|
| 7. |
Calcium and magnesium belong to the group of the periodic table because both? A. are metals B. form cations C. form colourless salts D. have same number of valence electrons |
D |
| 8. |
Which of the substances is non-polar? A. Bromine B. Ammonia C. Water D. Hydrogen Bromide
Show Content
Detailed SolutionBr2 (Bromine) is nonpolar because, in this molecule, both bromine atoms have the same electronegativity due to which both atoms have equal charge distribution and results in a net-zero dipole moment. |
|
| 9. |
Which of the following pairs of components have the same molecular mass?[ H = 1.0, C = 12.0, O = 16.0 ] A. Ethene and Ethyne B. Ethane and Ethene C. Carbon (ii) Oxide and Ethene D. Carbon (iv) Oxide and Ethyne
Show Content
Detailed SolutionEthene = 28Ethyne = 26 Carbon(ii)Oxide = 28 Carbon(iv)Oxide = 44 |
|
| 10. |
When an equilibrium is established between dissolved and undissolved solutes, the solution is said to be? A. Saturated B. Unsaturated C. Concentrated D. Diluted
Show Content
Detailed SolutionThe term saturated solution is defined in chemistry as a solution in which no more solute can be dissolved in the solvent. |
Preview displays only 10 out of the 50 Questions