SHARON OLUWAFISAYO

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Sharon provided a contribution 4 months ago

Question 132 | Biology Past Questions

Energy is always produced in any form of respiration
Respiration is the exchange of gases in the body of a living thing with the release of energy.
Respiration cannot occur without the production of energy, whether aerobic or anaerobic.

Sharon provided a contribution 4 months ago

Question 116 | Biology Past Questions

Autotrophy refers to the ability of organisms to manufacture their own food,therefore ,an Euglena is autotrophic because it can manufacture its own food
Therefore,option D is 💯 correct.

Sharon provided a contribution 4 months ago

Question 112 | Biology Past Questions

Flagella is found in Euglena,while cilia is found in paramecium.
Euglena and paramecium are both protozoans.
Therefore, option D is 💯 correct
Cilia and flagella perform the function of locomotion.

Sharon provided a contribution 4 months ago

Question 119 | Chemistry Past Questions

In this reaction,the number of moles on the reactant and product side are equal.
Total of two moles on both sides
Therefore, pressure will have no effect on the reaction.
Option B is not correct.
Option C is 💯 correct.

Sharon provided a contribution 4 months ago

Question 117 | Chemistry Past Questions

Oxygen is evolved at the product side,for a rate curve for product,Z is not the correct curve
The correct curve for it is R
The rate curve for product is R,while that of reactant is X
Since oxygen which is the evolved gas is a product,it's rate curve is R

Sharon provided a contribution 4 months ago

Question 115 | Chemistry Past Questions

Negative Gibb's free energy (G) signifies a feasible reaction,while a positive one signifies an unfeasible reaction.
Therefore, option C, feasible is 💯 correct.

Sharon provided a contribution 4 months ago

Question 110 | Chemistry Past Questions

The salt formed From the reaction between citric acid and sodium hydroxide will be basic because a strong base(NaOH) reacts with a weak acid( citric acid)
So, option B is 💯 correct.

Sharon provided a contribution 4 months ago

Question 87 | Chemistry Past Questions

Addition of more oxygen gas to the system makes the pressure of the system increase,thereby causing the solution to shift to the right leading to the production of more So3.

Sharon provided a contribution 4 months ago

Question 81 | Chemistry Past Questions

Chlorination, flocculation and sedimentation are all ways to purify water for town supply,and they are physical measures,while neutralization is a chemical process,and cannot be used to purify water.
This makes neutralization the right answer.

Sharon provided a contribution 4 months ago

Question 73 | Chemistry Past Questions

Oxidation refers to the gain of oxygen.
Hydrogen gas in the above reaction gained oxygen to form water,this means it has been oxidized.


Sharon provided a contribution 4 months ago

Question 57 | Chemistry Past Questions

1 mole of ethene produced 2 moles of carbon (iv)oxide
0.05 moles of ethene will produce x moles of carbon (iv) oxide
By cross multiplying,x=2×0.05
x=0.1 moles of co2
Recall,no of moles=volume/molar volume
0.1=V/22.4
V=2.24dm³
Therefore,the volume of carbon(iv) oxide produced is 2.24dm³.

Sharon provided a contribution 4 months ago

Question 52 | Chemistry Past Questions

The electronic configuration of an element with atomic number 15 is 2,8,5.
This element is in group 5 because it's last shell contains five electrons
This element is in period 3 because it's total number of shell is 3
Therefore,an element with atomic number 15 belongs to group 5,and period 3.

Sharon provided a contribution 4 months ago

Question 12 | Chemistry Past Questions

Endothermic reaction creates a cooling effect
A body feels cold to touch after an endothermic reaction has taken place.

Sharon provided a contribution 4 months ago

Question 105 | Biology Past Questions

A very detailed answer.
Thanks for educating me.

Sharon provided a contribution 4 months ago

Question 104 | Biology Past Questions

Abiotic factors refers to the non living aspect of the ecosystem,which means option C is 💯 correct

Sharon provided a contribution 4 months ago

Question 94 | Biology Past Questions

Haemophilia is an illness in which the body is not able to control bleeding ,which means the inability of the blood to clot well
This is due to the absence of fibrinogen or prothrombin which enables clotting of blood in animals

Question 59 | Biology Past Questions

This answer is so detailed
Thanks for educating me.

Question 52 | Biology Past Questions

Very correct, because blood group O is called the universal donor.


Sharon replied to ifeanyichukwu 4 months ago

Question 31 | Biology Past Questions

Whale is truly a fish,and should be cold blooded,but whales, dolphins and some other sea animals are not cold blooded,instead they are warm blooded

Sharon provided a contribution 4 months ago

Question 28 | Biology Past Questions

A blue Cobalt chloride paper is used to test for the presence of water
The presence of water is confirmed when the blue colour of the test paper changes to pink.


Sharon provided a contribution 4 months ago

Question 21 | Biology Past Questions

This is very correct
A female is XX ,and the mother will have to donate one chromosome,which is always X,the chromosome the father donates determines the sex of the child,if the father donates an X chromosome,the combination of the chromosomes donated by both parents will be XX ,which is a female child

Sharon provided a contribution 4 months ago

Question 38 | English Language Past Questions

Nouns usually have their stress on the first syllable
Therefore , insult(noun) has its stress on the first syllable,and can be written as INsult

Sharon provided a contribution 4 months ago

Question 27 | English Language Past Questions

All the options above talks about"odour"
-Flavour refers to odour or taste relating to fruit substances not cooked food ,so this nullifies option A
For example,the flavour of the strawberry juice is so delicious
-Stench talks about foul odour,so it can't be the answer
-Scent refers to odour not related to cooked food,but,it can be used to describe the odour of flowers
For example,the flower has a wonderful scent
-Aroma refers to odour of cooked food, due to the seasonings put in the food
So,aroma is the best option to pick.

Sharon provided a contribution 4 months ago

Question 3 | English Language Past Questions

"Broadcast" doesn't have a past tense,broadcast is both the past and present tense,so I think broadcast is the answer
This is my opinion


Sharon provided a contribution 4 months ago

Question 15 | Physics Past Questions

No,I disagree with your solution
The dry leclanché cell stores chemical energy,it only transfers chemical energy to electric energy


Question 13 | Physics Past Questions

I'm sorry,I do not understand this solution

Sharon provided a contribution 4 months ago

Question 11 | Physics Past Questions

Thanks for the explanation!
It's a nice one

Sharon provided a contribution 4 months ago

Question 7 | Physics Past Questions

Nuclear fusion is a nuclear reaction in which small nuclei fuse to form a large nucleus

Sharon provided a contribution 4 months ago

Sharon provided a contribution 4 months ago

Question 66 | Chemistry Past Questions

An acid salt can also be identified with the Hydrogen in between a mettallic and a non metallic compound in a salt.

Sharon provided a contribution 4 months ago

Question 63 | Chemistry Past Questions

Enthalpy is given as Heat of product-Heat of reactant
If the heat of reactant is lesser than that of the product,the enthalpy will be positive,and positive enthalpy signifies an endothermic reaction.

Sharon provided a contribution 4 months ago

Question 62 | Chemistry Past Questions

The law of diffusion says the gas with the lowest molecular mass will diffuse more rapidly
Methane has the lowest molecular mass, therefore it will diffuse most rapidly


Sharon provided a contribution 4 months ago

Question 3710 | Chemistry Past Questions

The correct answer is B
Methyl orange is orange in neutral solution,which nullifies option C,methyl orange is not orange in acidic solution
Methyl orange is pink in acidic solution (hydrogen ions),while it is yellow in basic solution

Sharon provided a contribution 4 months ago

Question 3704 | Chemistry Past Questions

Yes ,this is the correct answer, this solution is explicit