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QUBEE ACADEMY

5 Feb, 19:37

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14. Grade 11 & 12 English | Entrance Exam Based | Part 14 |Grammar: Future Tense| @QUBEEDIGITAL

#qubeedigital #qubeeacademy In this video, you will learn about the forms and uses of Simple Future and Future Continuous Tenses with an examples. At the end you will practice some past UEE questions. Don't forget to LIKE, COMMENT, SHARE, & SUBSCRIBE to the channel. #QUBEEACADEMY

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QUBEE ACADEMY

4 Feb, 19:33

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1. Physics Grade 11 Unit 5 | Heat Conduction and Calorimetry | Part 1 | new Curriculum| Afaan Oromoo

In this video, we'll explore heat conduction and calorimetry, covering essential concepts such as: #What is Heat? #What is Temperature #Internal Energy: #thermodynamics Work: Work done by or on a thermodynamic system. #This video is perfect for students studying physics, engineering, or chemistry...

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QUBEE ACADEMY

4 Feb, 00:24

Mathematics Grade 11 Unit 4 Determinants and Their Properties | New Curriculum: https://www.youtube.com/playlist?list=PLJrkRkyVP9RETiBETQ2kvhF9QN38qWebm

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Mathematics Grade 11 Unit 4 Determinants and Their Properties | New Curriculum

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QUBEE ACADEMY

3 Feb, 22:16

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QUBEE ACADEMY

3 Feb, 21:45

Physics Grade 11 Unit 5
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QUBEE ACADEMY

3 Feb, 21:00

Either any error

#10 MCQs on Electrochemistry (Grade 12)
Answers and explanations are provided.

# 1. What is the oxidation number of oxygen in KO₂ (superoxide)?
A) –2
B) –1
C) –1/2
D) +1

Answer: C) –1/2
Explanation: Rule 3 states oxygen in superoxides (e.g., KO₂) has an oxidation state of –1/2.

# 2. In the reaction: Mg(s) + 2HCl → MgCl₂(aq) + H₂(g), which species is oxidized?
A) Mg
B) H⁺
C) Cl⁻
D) H₂

Answer: A) Mg
Explanation: Mg loses electrons (oxidation: 0 → +2). H⁺ is reduced (gain electrons).

#3. In electrolytic conduction, what causes the increase in conductivity with temperature?
A) Delocalized electrons
B) Enhanced ionic mobility
C) Decomposition of ions
D) Reduced electrode resistance

Answer: B) Enhanced ionic mobility
Explanation: Electrolytic conductivity increases due to higher ionic mobility at elevated temperatures.

#4. During electrolysis of CuSO₄ using inert electrodes, which ion is discharged at the anode?
A) Cu²⁺
B) SO₄²⁻
C) OH⁻
D) O²⁻

Answer: C) OH⁻
Explanation: OH⁻ ions (from water) are lower in the electrochemical series than SO₄²⁻, so they oxidize to O₂ at the anode.

#5. What is the primary difference between metallic and electrolytic conduction?
A) Metallic conduction involves ions, while electrolytic involves electrons.
B) Metallic conduction involves electrons, while electrolytic involves ions.
C) Both involve ions.
D) Both involve electrons.

Answer: B) Metallic conduction involves electrons, while electrolytic involves ions.

#6. Which factor does NOT affect preferential discharge during electrolysis?
A) Electrode material
B) Ion concentration
C) Temperature of the solution
D) Position in the electrochemical series

Answer: C) Temperature of the solution
Explanation: Preferential discharge depends on ion position, concentration, and electrode nature, not temperature.

#7. In the electrolysis of brine (concentrated NaCl), what forms at the cathode?
A) Cl₂
B) H₂
C) O₂
D) Na

Answer: B) H₂
Explanation: H⁺ (from water) is reduced to H₂ at the cathode due to high Cl⁻ concentration favoring Cl₂ at the anode.

#8. Faraday’s first law relates mass deposited to:
A) Voltage
B) Current and time
C) Electrode surface area
D) Ion charge

Answer: B) Current and time

#9. Which metal is extracted via electrolysis of its molten oxide?
A) Iron
B) Copper
C) Aluminum
D) Zinc

Answer: C) Aluminum
Explanation: Al is extracted from molten Al₂O₃ (Hall-Héroult process).

# 10. In electroplating, the object to be plated acts as the:
A) Anode
B) Cathode
C) Electrolyte
D) Salt bridge

Answer: B) Cathode
Explanation: The metal to be plated is the cathode, where reduction (deposition) occurs.

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QUBEE ACADEMY

3 Feb, 11:06

Yuunivarsiitiiwwan garagara qormaata ba’iinsaa (Exit Exam) barattoota digrii jalqabaan eebbifamuuf jiraniif har’a eegale naamusa qormaataa cimaa ta’een gaggeessaa akka jiran beeksisaniiru.

Yuunivarsiitiin Wallaggaa meeshaalee dhorkaman ykn kanneen wiirtuuwwan qormaataa fiduuf hin hayyamamne sakatta’uun barattoota fudhatanii seenuuf yaalan to’annaa jala oolchuu beeksise.

Kanarraa kan ka’e yunivarsiitichi barattoonni meeshaalee teeknooloojii dhorkaman, gowwoomsaa fi hannaaf haala mijeessan qabatanii argaman kutaa qormaataa akka hin seenne dhorkeera.

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QUBEE ACADEMY

3 Feb, 08:52

https://youtu.be/Q_lXR68RwhA

2. Grade 11 & 12 English | Entrance Exam Based | Part 2 | Informal Letter Writing

This video helps you to understand letter writing, the common types of letters, and its main parts, particularly you will learn informal styles of letter writing.

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QUBEE ACADEMY

2 Feb, 02:51

Answer key English 2017.pdf

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Physics Model Exam Answer Key.pdf

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Answer key for the above
G12 First Semester Model Exam
January 2017/2025

By:
OROMIA EDUCATION BUREAU

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QUBEE ACADEMY

2 Feb, 01:47

Biology Model Exam_protected.pdf

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G12 First Semester Model Exam
January 2017/2025

By:
OROMIA EDUCATION BUREAU

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QUBEE ACADEMY

2 Feb, 00:43

Репост из: Tap into Tech🤖

🎁 We're giving away an iPhone 16 Pro Max 256GB (or 200TON)!* Plus 2 premium subscriptions for a year!

Together with our friends at @scloud_ws, we're giving away an iPhone 16 Pro Max 256GB and 2 premium subscriptions for a year to our followers. The lucky winners will be chosen by the bot @iGiveStarsBot among the subscribers of @TapIntoTech and @scloud_ws.

To participate, you need to:
• Be subscribed to @TapIntoTech
• Subscribe to @scloud_ws
• Click the "Participate" button under this post

The results will be announced on Thursday, February 20th, at 20:00 (UTC+1 CET). The bot @iGiveStarsBot will randomly select three winners. The first winner gets the iPhone*, the second and third will receive premium subscriptions for a year.

* Prizes will be shipped absolutely free to the winners within the MRW delivery zone, no payment required. Good luck to everyone!
* If we can't deliver the prize via the delivery service, it will be replaced with 200TON.

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QUBEE ACADEMY

1 Feb, 20:23

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