Uche Emmanuel

Uche's Recent Activity

Question 1164 | Chemistry Past Questions

Yhyh...I see😹😗

We learn everyday


Uche provided a contribution 1 year ago

Question 1245 | Physics Past Questions

Goldwyn Onyebuchi
The silvered wall is used to prevent heat loss by radiation

Uche provided a contribution 1 year ago

Uche provided a contribution 1 year ago

Question 1582 | Biology Past Questions

Actually the blue green algae can photosynthesize so it's a green plant and that's annulling the option D . Then again the blue green algae(nostoc) is in the kingdom Monera and it's prokaryotic.....so there you have it...the answer is B...

Uche provided a contribution 1 year ago

Question 1561 | Biology Past Questions

The answer should be variation because variation is the uniqueness of an organism in a population


Uche provided a contribution 1 year ago

Question 1236 | Physics Past Questions

This is wrong because the correct answer is the spring balance....mass is measured by beam or chemical balance and the option C isn't complete

Uche provided a contribution 1 year ago

Question 1227 | Physics Past Questions

Well....this is wrong because whether r2 is greater than r1 or not...the combined resistance is greater than r2....use any digit as an example

Uche provided a contribution 1 year ago

Question 985 | Biology Past Questions

Carbon cannot be added to the atmosphere when building up organic compounds because when that happens the so called carbon dioxide is removed during photosynthesis but during breaking down of sugar aerobically by animals there is release of carbon dioxide

Uche provided a contribution 1 year ago

Question 5557 | Biology Past Questions

It is when the bladderworm in muscles of pig head is infolded that is when it is eaten into man as not really cooked pork

Uche provided a contribution 1 year ago

Question 1832 | Chemistry Past Questions

Magnesium hydroxide is not soluble so therefore it isn't an alkali

Uche provided a contribution 1 year ago

Question 1164 | Chemistry Past Questions

The number of replacable hydrogen or hydroxonium ions in an acid is it's acid strength

Uche provided a contribution 1 year ago

Question 1135 | Chemistry Past Questions

The answer to this is maltose and starch

Uche provided a contribution 1 year ago

Question 630 | Chemistry Past Questions

An alkali is a soluble base and ammonia is soluble buh not aluminum hydroxide

Uche provided a contribution 1 year ago

Question 4321 | Chemistry Past Questions

The answer is toluene because phenol is used as a disinfectant while the toluene is used for explosives

Reference..new school chemistry


Uche provided a contribution 1 year ago

Question 4309 | Chemistry Past Questions

This is also wrong
Because they said hydrogen ion concentration not hydroxide ion concentration...having found the pH you subtract from 14 to give 3.30

Uche provided a contribution 1 year ago

Question 4307 | Chemistry Past Questions

The answer is detect because..using half life you can be able to date back to when that particular substance existed

Uche provided a contribution 1 year ago

Question 4300 | Chemistry Past Questions

This is actually wrong because any substance that dissolves with liberation of heat,it means that the reaction is exothermic so therefore solubility decreases with increase in temperature and vice versa