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Welcome to Champs Online Tutorials Official Telegram Channel. We aim to provide Value packed Online Classes for Jamb, Post Utme, School of Nursing and Other O'level Examination. Check //www.instagram.com/champs_online_tutorials/profileca
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Channel Posts
| 2 | SOLUTION TO TODAY'S DRILL π₯ β
1. C - d - orbitals
Transition metals have characteristic Properties different from those of other groups elements because of thier partially filled or incompletely filled d-orbitals
2. D - Sn
Sn, Al, Pb, Sn and Be are amphoteric metals hence would dissolve in both acids and bases to liberate Hydrogen
Sn + 2NaOH + 2H2O ==> Na2Sn(OH)4 + H2
3. C - Ca
K/Na respectively react explosively/vigorously with cold water
CA reacts slowly with cold water releasing H2 gas in bubbles only but rapidly with warm or hot water
Mg/Al/Zn/Fe/Pb/ react with steam at red heat
Cu/Hg/Ag/Au dies not react with water in any form
4. C - blast reduction
This is the modern direct-reduction method
ADVANTAGES OF BLAST REDUCTION
1. Cheap sources of the reducing gases
2. Opportunity to produce all grades of steels
5. C - mordant
Al(OH)3 is used as mordant which helps dyes to stick to clothes
6. D - cooling a molten mixture of the metals
Alloys are prepared by heating the mixture of the metals and cooling them. Upon solidifying, the alloy must not separate into distinct layers of elements.
7. D - partially filled d orbitals
Complete in-filling of the d orbital offers stability to the electrons. The partial filling of the d orbitals accounts for the instability of the transition metals.
8. D - reacts with oxygen and carbon IV oxide
Na reacts readily (but not vigorously) with atmospheric gases except the N2 and the nobles gases
4Na + O2 ==> 2Na2O
Na2O + H2O ==> 2NaOH
2NaOH + CO2 ==> Na2CO3
Because of this reason, sodium is stored under paraffin oil, toluene or naphtha
9. B - green when viewed through a blue glass
The brick red flame of calcium appears green when viewed through a blue glass
1. Na+ ==> Golden-yellow flame invisible when viewed through a blue glass
2. K+ ==> Lilac flame which appears crimson when viewed through a blue glass
3. CuΒ²+ ==> Deep green or bluish green flame
4. PbΒ²+ ==> Blue flame
5. BaΒ²+ ==> Light green
10. A - steel and permalloy
1.Brass-Cu; Zn
2.Bronze-Cu, Sn
3. Stainless steel-Fe; C; Ni; Cr
4.Steel-Fe; C
5.Duralumin-Al; Cu; Mg; Mn
6.Alnico-Fe; Al; Ni; CO
7.Soft solder-Pb; Sn
8. Hard Solder-Pb; Sn
9.Permalloy- Fe;Ni
DROP A REACTION IF YOU'VE LEARNED SOMETHING TODAY β€οΈ | 43 |
| 3 | QUESTION DRILLS 1 ON METALS π₯β
π
1. Metals of the first transition series have special properties which are different from those of groups I and II elements because they have partially filled
A. s orbitals
B. p orbitals
C. d orbitals
E. f orbitals
2. Hydrogen can be displaced from a hot alkaline solution by
A. Fe
B. Cu
C. Ca
D. Sn
3. The metal that liberates hydrogen from cold water in bubbles only is
A. Na
B. K
C. Ca
D.AI
4. The modem process of manufacturing steel from iron is by
A. treatment with acids
B. oxidation
C. blast reduction
D. treatment with alkalis
5. Aluminum hydroxide is used in the dyeing industry as a
A. salt
B. dye
C. mordant
D. dispersant
6. Alloys are best prepared by
A. electroplating
B. arc-welding
C. reducing a mixture of their metallic oxides
D. cooling a molten mixture of the metals
7. Transition metals possess variable oxidation states because they have
A. electrons in the d orbitals
B. electrons in the s orbitals
C. a variable number of electrons in the p orbitals
D. partially filled d orbitals
8. Sodium metal is always kept under oil because it
A. readily reacts with water
B. is reduced by atmospheric nitrogen
C. reacts vigorously on exposure to air
D. reacts with oxygen and carbon(IV)oxide
9. In a flame test for calcium, the flame appears
A. blue when viewed through a blue glass
B. green when viewed through a blue glass
C. orange-red when viewed through a blue glass
D. Brick-red when viewed through a blue glass
10. Which of the following alloys contains Iron?
A. Steel and permalloy
B. Duralumin and steel
C. Soft solder and duralumin
D. Brass and bronze
SUBMIT YOUR ATTEMPT IN THE COMMENTS. SOLUTION DROPS HERE BY 3PM. | 52 |
| 4 | Good Morning Scholar's π―π₯.
Trust you are doing fine.
I want to give you a taste of our drills in the Revelation Class β
| 47 |
| 5 |  WHAT MORE THAN THIS 13 SOLID FEATURES DO YOU NEED?
As a 2025 Jambites, all our Features are carefully tailored to help you achieve your Desired success
You can't afford to lose your admission in 2025 due to Low Jamb Score. Enroll today!!
N5000 shouldn't keep you off these amazing benefits. Click the link below to Register
https://wa.me/2349017455732?text=Good+day+Tutor+Folaranmi+I+want+to+Register+for+the+2025+Jamb+Paid+Class+Can+I+have+account+details | 53 |
| 6 |  REGISTRATION IS NOW ONGOING π₯ π
Our 2025 Jamb Utme Class is now ongoing. Check out our Sales Page to get more information.
Class starts 6th of January, 2025
https://champs-online-tutorials.my.canva.site/cot-website
SEE YOU IN CLASS π₯ | 67 |
| 7 |  HERE COMES THE ELITE PRO?
β
From the Basic
β
To the Premium Package
β
To Elite
β
To the Elite Pro π₯π₯π₯..
TO REGISTER TODAY π₯β
. LINKS DROP NEXT π₯ | 75 |
| 8 |  DIFFERENT PLANS, DIFFERENT BENEFITS π₯β
What More are you looking for in a Tutorial.. we have carefully structured our plans to your taste.. | 66 |
| 9 |  WHAT'S OUR BENEFIT AND PRICE PLANπ₯β
| 59 |
| 10 | Are we following π₯π₯π₯π₯
There's more.... | 56 |
| 11 |  13 POWERFUL REASONS WHY YOU SHOULD BE A CHAMP BY 2025
Have you seen that Last One π€. Check again.
β
Free Data for you π«΅ Every week.
AND YOU WANT TO REALLY MISS OUT? | 64 |
| 12 | There's More!!!!. Come with me..
I hope we are following π₯π₯π₯ | 60 |
| 13 |  HERE ARE SOME OF THE NUMEROUS REASONS YOU SHOULDN'T MISS OUR 2025 JAMB UTME CLASS π₯π₯ | 65 |
| 14 | We are glad to announce that:
In 2024 were able to secure over 80% of our student with 250+ in jamb utme exam. Coupled with numerous 300+
With 349 has the highest achieved..
We will be commencing the 2025 journey right from tonight
I hope you will stick with us... | 62 |
| 15 |  ARE WE READYYYY π₯π₯
Drop a reaction if you are | 60 |
| 16 |  Good Evening Scholar's π―π₯..
I hope we are pumped up tonight's session by 8:30pm.
To be a part..Click the link now π₯
https://wa.me/2349017455732?text=Good+day+Tutor+Folaranmi+I+have+saved+your+contact+Save+mine+as | 63 |
| 17 | JOIN US BY 8:30PM TONIGHT π₯π₯π₯ | 66 |
| 18 |  JUST IN ONE WEEK π₯π₯π₯
We have covered Several Complex Topics across science subjects.. We are moving again tommorow.
Registration is still ongoing..Fee is N3000 for the class.
REGISTER TODAY!!
https://wa.me/2349017455732?text=Good+day+Tutor+Folaranmi+I+want+to+Register+for+the+30+Days+Revelation+Class+Can+I+have+account+details | 81 |
| 19 |  Happy Sunday and Happy New Months Scholars π | 67 |
| 20 | IT'S TOMMOROW, BE THERE π₯π«΅!
On the 1st of December, 2024. Champs Online Tutorials will be releasing:
β
COT 2025 JAMB Tutorial Class features.
β
COT JAMB Class Schedule ( 3 Months Class Plan)
β
COT timetable for 2025 classes
β
COT 2025 JAMB classes Pricing.
β
COT Bonuses Packages
β
COT Affliate System (An Opportunity to make money as a Student)
β
And every other important information you will need ahead of our intensive 2025 JAMB classes
ANTICIPATE π₯ π₯. Send a Dm to Tutor Folaranmi so as not to miss out
https://wa.me/2349017455732?text=Good+day+Tutor+Folaranmi | 86 |
