QuestC: 1A.2A.3D .4C.5D.6.A.7C.8A.9B.10D.

Bro No 2 is wrong.Its C instead but you killed the rest o

STORM2:
1.A 2.A 3.A. 4.C 5.D 6.C 7.A 8. B 9.D 10.B

gud attempt
score-8/10
grade-v.good
comment- u r good to go girl

STORM2: @Mcslize, that number 2 remember the question asked for "the amount of metal deposited by the same amount of electricity that deposits 18g of aluminium" not the amount deposited by 1faraday.
I don catch u!
No argue oh! I don catch u!!!
But u know chemistry sha! That one abt lime water pained me!!!! U good!

sweetheart, the question 2 is asking us to calculate amount of Copper that will be deposited by the same electricity that deposite 18g of Aluminium

Faraday is also known as electricity. Now , from my solving, 2faraday deposit 18g of Aluminium. What amount of copper will be deposited with that same electricity? Thats the question.
All u need to do is calculate the amount of copper that will be deposited with that 2faraday which can also be refer to as the electricity.
So, if 2f deposite 18g Aluminium
2f will deposite 32g Copper

I hope it is clearer now

Mcslize:

1. A
Explanation: Aluminium, Calcium & Sodium belong to group 3, 2 & 1 respectively making them more reactive cuz they easily give out their outer most electrons making them to form positive ions.

2. B

Explanation:

Note f= faraday

3f of Al = 27g
x = 18g

Therefore 27g/3f = 18g/x

x = 2f

2f deposit 64g of Cu
1f will deposit 64g/2f * 1= 32g of Cu

3. A

Explanation: CL2O7
Oxygen ion= -2, lets Chlorine ion = x

2x + ( -2 * 7) = 0

2x - 14 = 0

2x = 14

x = 14/2

x = 7

4. C

Explanation: All alkanes group does not decolorise bromine water cuz they are saturated. And they have a general molecular formaular of CnH2n + 2

therefore ethane which is two in the group will be C2H2*2 + 2 = C2H6

5. D

Explanation: Iodine will sublime because iodine structure is held by weak intermolecular force

6. B

Explanation: If CO2 Is pass through a lime water for a short time the lime water will turn milky therby forming an insoluble calcium trioxocarbonate iv CaCO3

but if it is pass through the lime water for long time it will form the soluble salt called calcium hydrogen trioxocarbonate iv which when heated will decompose to form CO2, H2O & CaCO3

7. A

8. B
Explanation: Radon is a radioactive element that disintegrate & as such it is used as a tracer in medical research

9.D

Explanation: Graphite is not an ore but an allotrope of carbon beside Diamond. And it is used as a lubricant due to its structure

10 B

Explanation: copper Cu & Tin Sn are the component of Bronze.
Copper & Zinc are the component of Brass

Almagam is mercury with any other element e,g aluminium almagam, zinc almagam etc

My favourite

CHEMISTRY

score-10/10
grade-excellent
comment-weldone baddo.. C as u dey clear d question even dey explain join and u say my head dey hot.. O'boy ur own head na vulcanic eruption oo... Hehehehe

I heard there's strike. Please I wanna knw if the UTME wil still hold.

More grease to una elbows...abeg physics questions oo....

sylvalord:
score-10/10
grade-excellent

I love biology alot.......pls, I want you all to ask me any question on biology

STORM2:
Bro..I'm sorry u asked me a question earlier and I haven't replied. I'm sorry....didn't see it.
Direct entry -medicine. #fingers crossed#

It's ok! Apology accepted. God will graciously see us through.

donpedro20: I heard there's strike. Please I wanna knw if the UTME wil still hold.

sit don there oo...exam that has already taken place,STRIKE WONT AFFECT P.UTME at all.

correction 4 d chemistry...
1.a 2.b 3.a 4.c 5.d 6.b 7.a 8.b 9.d 10.b
any questions

Mcslize: ANSWER THE FOLLOWING QUESTIONS

SUBJECT: BIOLOGY

1. Which of the following organisms reduces nitrates in the soil to gaseous nitrogen?

A. Euglena B. Nitrifying bacteria C. Denitrifying bacteria D. Protozoan

2. The following are necessary for photosynthesis to take place except

A. Chlorophyll B. Water C. Oxygen D. Carbon dioxide

3. The part of the alimentary system of a bird where grinding of maize occurs is the

A. crop B. rectum C. stomach D. gizzard

4. Which of these is a direct photosynthetic product?

A. fat B. glucose C. starch D. protein

5. The element nitrogen is utilised in

A. formation of ATP B. formation of amino acids C. formation of glucose D. none of the above

6. The digestive enzyme that coagulates protein in milk is

A. renin B. ptyalin C. pepsin D. trypsin

7. Which of the following food substances is digested in the stomach?

A. proteins B. carbohydrates C. fats and proteins D. carbohydrates and fats

8. The deficiency of vitamin D Leads to

A. scurvy B. pellagra C. beri beri D. rickets

9. Which of the following pairs are the products of sucrose hydrolysis?

A. glucose + glucose B. fructose + fructose C. glucose + fructose D. galactose + glucose

10. The severe deficiency of vitamin C Leads to

A. kwasiokor B. scurvy C. beri beri D. pellagra

pls Answer them without checking up your Text Books.

Try to be sincere. This is just to test your preparation

good Luck!

Will provide the Answers later

I still stand to b corrected, I'm not perfect
1.C 2.C 3.A 4.C 5.B 6.A 7.A 8.D 9.C 10. B

Mcslize:

U sound facetious u know. U are not serious. This is time for u to get expose to standard possible questions. For ur information, those questions are standard post ume questios. When u know them u have known them and it will stick to u.

Try to attempt them cuz if u can't attemt these possible questions here, I doubt how possible u will attempt the post Ume questions.
If u say we are doing copy and paste here then kindly answer this direct question. Is not copy and paste any more.

QUESTION: The part of the brain responsible for voluntary activities and intelligent is called what?

Cerebrum: it exhibits d abilty 4 one to reason, learn,procure intelligence n brilliancy....... It's a voluntary action!!! Just my layman language....

Didi 5: Bro No 2 is wrong.Its C instead but you killed the rest o

Sorry, can i get the distinction between a referendum and a plebiscite?

Mcslize:

sweetheart, the question 2 is asking us to calculate amount of Copper that will be deposited by the same electricity that deposite 18g of Aluminium

Faraday is also known as electricity. Now , from my solving, 2faraday deposit 18g of Aluminium. What amount of copper will be deposited with that same electricity? Thats the question.
All u need to do is calculate the amount of copper that will be deposited with that 2faraday which can also be refer to as the electricity.
So, if 2f deposite 18g Aluminium
2f will deposite 32g Copper

I hope it is clearer now

Remember that copper has a valence of 2
That means that 2F will give 64g of copper
U don't need to solve for 1faraday because the question asked u how many grams of copper will be deposited by the SAME amt of electricity that deposits 18g of aluminium which is 2F
Bros....abeg na...

Hugo7: More grease to una elbows...abeg physics questions oo....

physics loading... And its more grace nt more grease

Abu Mikey: You wrote jamb?

yes i did.

sylvalord:
gud attempt
score-8/10
grade-v.good
comment- u r good to go girl

Kai! I didn't fail number 2 oh. I no gree for that wan...the question said SAME amt of electricy..u're to solve for 2F not 1F....we go fight oh

Mehlena: yes i did.

Never knew you did!!

STORM2: @Mcslize, that number 2 remember the question asked for "the amount of metal deposited by the same amount of electricity that deposits 18g of aluminium" not the amount deposited by 1faraday.
I don catch u!
No argue oh! I don catch u!!!
But u know chemistry sha! That one abt lime water pained me!!!! U good!

lol.. He is correct dear lemme xplain.. D question asked 4 d quantity of cu deposited by d same amount of electricity dat deposited 18g of aluminium.. D questn didnt give us d amount of electricity and dats y it z tricky.. But recall dat 1 faraday=1 mole of electron and therefore aluminium having Al3+ wil need 3faraday.. Now 3f wil deposit 27g of al and xf wil give 18g of al therefore 3---27 and x---18=54/27=2... Dat means 2f deposited 18g of aluminium... Naw 4 copper.. D question said d same quantity of electricity so therefore 64/2=32g of copper deposited.. Do u undastand naw?

Donvitalis: Thanks, i've thrashed out the issue.

dats gud.. Wish u gudluck

STORM2:
Kai! I didn't fail number 2 oh. I no gree for that wan...the question said SAME amt of electricy..u're to solve for 2F not 1F....we go fight oh

lol.. Dats d point dear.. U solved 4 1F not 2F

@Mcslize and Sylvalord...pls just cool down okay....
How many coloumbs will give 18g of AL3+?
The answer is 2F abi?
This answer simply means that 2Faraday (2x96500Coloumbs) will give 18g of aluminum.
The question now asks how many grams of copper will the above amount of electricity deposit...
Cu2+ requires exactly 2F to give 64g of copper.

This means that 2F (from above) yeilds 64g of copper...
This is a trick question...pls don't fall for it.
Just cool down and u'll see my logic is sound.

STORM2:
Kai! I didn't fail number 2 oh. I no gree for that wan...the question said SAME amt of electricy..u're to solve for 2F not 1F....we go fight oh

lol.. Dats d point sweety.. U solved 4 1F nt 2F

STORM2: @Mcslize and Sylvalord...pls just cool down okay....
How many coloumbs will give 18g of AL3+?
The answer is 2F abi?
This answer simply means that 2Faraday (2x96500Coloumbs) will give 18g of aluminum.
The question now asks how many grams of copper will the above amount of electricity deposit...
Cu2+ requires exactly 2F to give 64g of copper.

This means that 2F (from above) yeilds 64g of copper...
This is a trick question...pls don't fall for it.
Just cool down and u'll see my logic is sound.

hmm.. I jst checked it again and u might be correct..

STORM2:
Kai! I didn't fail number 2 oh. I no gree for that wan...the question said SAME amt of electricy..u're to solve for 2F not 1F....we go fight oh

sis the question doesn't ask us to use the copper valence to calculate for the amount of copper

It asked us to solve directly for the amount of copper that will be deposited by that 2faraday electricity that deposited aluminium.

If the question had not involve aluminium thats when u can used the valence of copper to calculate for the amount of copper. But as u can see the question involve another element which is Aluminium. I hope u will get it right this time around

Mcslize:

sis the question doesn't ask us to use the copper valence to calculate for the amount of copper

It asked us to know solve for the amount o copper that will be deposited by that 2faraday that deposited aluminium.

If the question had not involve aluminium thats when u can used the valence of copper to calculate for amount of copper. But as u can see the question involve another element which is Aluminium. I hope u will get it right this time around

Lol...did u even read my above post? Its very self explanatory. Just read it well.
But if u keep insisting I'll leave u oh...

Mcslize:

sis the question doesn't ask us to use the copper valence to calculate for the amount of copper

It asked us to solve directly for the amount of copper that will be deposited by that 2faraday electricity that deposited aluminium.

If the question had not involve aluminium thats when u can used the valence of copper to calculate for the amount of copper. But as u can see the question involve another element which is Aluminium. I hope u will get it right this time around

She's correct actually. It's a no-brainer. Since 18g is deposited by 2F and 1 mole of Cu(64g) ordinarily will be deposited by 2F. Think deeply.

sylvalord:
hmm.. I jst checked it again and u might be correct..

edreesabiodun: She's correct actually. It's a no-brainer. Since 18g is deposited by 2F and 1 mole of Cu(64g) ordinarily will be deposited by 2F. Think deeply.

I'm glad oh. Mcslize neva believes me. He thinks I'm a stubborn gurl...

Didi 5: Bro No 2 is wrong.Its C instead but you killed the rest o

You're right. Religion is undoubtedly the correct answer. I didn't read the question carefully.

sylvalord:
hmm.. I jst checked it again and u might be correct..

U are wrong. Pls think of the question. The question didn't give us current and time so u can't use 95600c. U can only use that if the question give u the current and the time it took for the current to deposit the element & thats wen u will apply that method u explain above by using the formular Q = It to calculate the number of Columb.

But the question only ask u to solve directly for the amount of cu deposited.

To support what I said below are two examples:

Example 1:
In electrolysis, a metal cation M3+ is liberated at the cathode. Calculate the mass of M deposited when a current of 2 ampere is passed for 30 minutes ( M= 56, R faraday= 96500C)

looking at this question above, ur above method can only be used to solve problem like this cited example because the current is given and time is given.

Don't mistake this kind of question with the one set by slvalord. They are different entirely.

U were not given the current so why should u be using that method?

That ur explanation can only be used to solve the example I cited above not the one that sylvalord set.
If u still doubt then give the question to a chemistry teacher to solve it he will still arrive at that my answer.

STORM2: @Mcslize and Sylvalord...pls just cool down okay....
How many coloumbs will give 18g of AL3+?
The answer is 2F abi?
This answer simply means that 2Faraday (2x96500Coloumbs) will give 18g of aluminum.
The question now asks how many grams of copper will the above amount of electricity deposit...
Cu2+ requires exactly 2F to give 64g of copper.

This means that 2F (from above) yeilds 64g of copper...
This is a trick question...pls don't fall for it.
Just cool down and u'll see my logic is sound.

sylvalord:
hmm.. I jst checked it again and u might be correct..

U are wrong. Pls think of the question. The question didn't give us current and time so u can't use 95600c. U can only use that if the question give u the current and the time it took for the current to deposit the element & thats wen u will apply that method u explain above by using the formular Q = It to calculate the number of Columb.

But the question only ask u to solve directly for the amount of cu deposited.

To support what I said below are two examples:

Example 1:
In electrolysis, a metal cation M3+ is liberated at the cathode. Calculate the mass of M deposited when a current of 2 ampere is passed for 30 minutes ( M= 56, R faraday= 96500C)

looking at this question above, ur above method can only be used to solve problem like this cited example because the current is given and time is given.

Don't mistake this kind of question with the one set by slvalord. They are different entirely.

U were not given the current so why should u be using that method?

That ur explanation can only be used to solve the example I cited above not the one that sylvalord set.
If u still doubt then give the question to a chemistry teacher to solve it he will still arrive at that my answer.

Mcslize:

U are wrong. Pls think of the question. The question didn't give us current and time so u can't use 95600c. U can only use that if the question give u the current and the time it took for the current to deposit the element & thats wen u will apply that method u explain above by using the formular Q = It to calculate the number of Columb.

But the question only ask u to solve directly for the amount of cu deposited.

To support what I said below are two examples:

Example 1:
In electrolysis, a metal cation M3+ is liberated at the cathode. Calculate the mass of M deposited when a current of 2 ampere is passed for 30 minutes ( M= 56, R faraday= 96500C)

looking at this question above, ur above method can only be used to solve problem like this cited example because the current is given and time is given.

Don't mistake this kind of question with the one set by slvalord. They are different entirely.

U were not given the current so why should u be using that method?

That ur explanation can only be used to solve the example I cited above not the one that sylvalord set.
If u still doubt then give the question to a chemistry teacher to solve it he will still arrive at that my answer.

As usual we'll agree to disagree......
I don't know what else to tell u..there is no "rule" to follow. This is simple proportion.
Q=IT.....i.e coloumbs =time x ampere.....so if u have the quantity of electricity u automatically have ur time and ampere...I'm shocked we're still talking about this......