ANSWERS TO THE LAST SCi-GAME

Answers to the SCi-Game.

Q1. Li2SO4 + KNO3 --->LiN03 + K2SO4

Q2. Homogeneous mixture is the type of mixture whose components are uniformly mixed while Heterogeneous mixture is the type of mixture whose components are not uniformly mixed.

Q3. i.Pure water has a pH of 7.

ii. Water is colourless, odourless and tasteless.

iii. Water boils at 100°C .

iv. Water freezes at 0°C.

Q4. Hard water is the type of water that has cations of magnesium and calcium while Soft water is the water without ions.

Q5. i. Boiling

ii. Distillation 

iii. Reverse osmosis 

iv. Using water softners

Q6. Filtration, Aeration, Flocculation, Sedimentation, Chlorination, Alum addition, Distribution.

Q7. Gene is the basic unit of heredity that contains genetic information while Chromosome is the threadlike structure that carries the gene.

Q8. Haemophilia, Albinism, Baldness, Sickle cell, etc.

Q9. i. Testosterone

ii. Oestrogen

iii. Oxytocin

iv. Prolactin

v. Progesterone

Q10. Gestation period is the period between Implantation and birth while Implantation is the attachment of a zygote onto the uterine walls.

Q11. i. Sheath/ Barrier/ Condom methods

ii. Intrauterine device/coil (IUD)

iii. Coitus interrupt

iv. Rhythm method

v. Contraceptive methods

Q12. Photosynthesis is the method by which green plants prepare their own food using water and carbon dioxide in the presence of sunlight and chlorophyll.

Q13. Raw materials- Water & carbon dioxide

Catalysts- chlorophyll & sunlight

                                  Chlorophyll 

 Q14. 6CO2 +6H20 —————->C6H12O6 + 6O2 + Energy                   

                                 Sunlight            

Q15. Daytime, this is because daytime photosynthesis occur that take the produced carbon dioxide, thereby it helps to regulate global warming.

Q16. Photosynthesis, Respiration, Decomposition & Combustion.

Q17. Fe + O2 —-> Fe2O3

Q18. This is because, at night plants respire using the limited oxygen gas, so there would be completion for oxygen gas if a human sleeps under it at that time.

Q19. The plant would die because photosynthesis wouldn't occur.

Q20. It rust, this is because oxygen and water (moisture) are present in the green grass.

Q21. Blood plasma & blood cell.

Q22. Septum, 4, right auricle, right ventricle, left auricle & left ventricle.

Q23. The brain stimulates adrenaline hormone production that causes the ventricles of the heart  to pump more blood. This then results to rapid heartbeat. 

Q24. Stroke, Insomnia, Varicose veins, piles, hypotension, hypertension, etc.

Q25. Output power= 120J

Friction= 40N

but Input power = output power + friction

=120 + 40

=160J

=> Efficiency= output power/ input power x 100%

=120/160 x 100

=12∅/16∅ x100

=12/16 x100

=¾ x100

= 75%

CONGRATS FOR TAKING THE QUIZ, Hope to meet you again, UNTIL WE MEET AGAIN, it’s BYE FOR NOW✌️.