5. When do organs and organ systems begin to develop in humans? A. In the sperm cell before fertilisation.
B. Before fertilisation and after birth.
C. In the egg cell after fertilisation.
D. After fertilisation and before birth.

6. All are the effects of alcohol EXCEPT
A. bleeding gums.
B. brain and liver damage.
C. loss of speech and memory.
D. obesity.

7. Use of vehicles, rise in industries, and burning fossil fuel contribute to
A. soil pollution
B. noise pollution
C. water pollution
D. air pollution.

8. While drinking tea, the least likely sense organ used is
A. eye.
B. nose.
C. tongue.
D. ear.​

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.