Фильтр публикаций


📚 Chemistry Common questions about  Redox Reactions & Oxidation States:

1.  Which of the following is a defining characteristic of ALL redox reactions?
    a)  Formation of a precipitate
    b)  Transfer of protons (H⁺ ions)
    c)  Transfer of electrons
    d)  Release of heat (exothermic reaction)
   

Answer: c) Transfer of electrons


2.  In the following reaction, which species is being oxidized?  2 Ag⁺(aq) + Cu(s)  →  2 Ag(s) + Cu²⁺(aq)   
     a)  Ag⁺
     b)  Cu
     c)  Ag
     d)  Cu²⁺
   

Answer: b)  Cu  (Loses electrons, oxidation number increases)

3.  What is the oxidation state of sulfur (S) in H₂SO₄?
    a)  +2
    b)  +4
    c)  +6
    d)  -2
   

Answer: c)  +6
 

4.  Which of the following is NOT a possible oxidation state of chlorine (Cl)?
    a)  -1
    b)  +1
    c)  +3
    d)  +6
   

Answer: d)  +6
(Chlorine can have oxidation states from -1 to +7, but not +6)

5.  In a balanced half-reaction, what is used to balance the charges?
    a)  H₂O
    b)  H⁺ ions
    c)  Electrons (e⁻)
    d)  All of the above
   

Answer: c) Electrons (e⁻)


6.  A reducing agent is a species that:
    a)  Loses electrons and is reduced.
    b)  Gains electrons and is reduced.
    c)  Loses electrons and is oxidized.
    d)  Gains electrons and is oxidized.
   

Answer: c) Loses electrons and is oxidized.


7.  In the compound Na₂O₂, what is the oxidation state of oxygen (O)?
    a)  -2
    b)  -1
    c)  0
    d)  +1
   

Answer: b)  -1
  (This is a peroxide)

8.  Disproportionation is a type of redox reaction in which:
    a)  The same element is both oxidized and reduced.
    b)  Two different elements are oxidized.
    c)  No electrons are transferred.
    d)  The reaction is always endothermic.
  

Answer: a)  The same element is both oxidized and reduced.

9.  What is the oxidation state of manganese (Mn) in the permanganate ion (MnO₄⁻)?
    a)  +2
    b)  +4
    c)  +7
    d)  -1


    Answer: c)  +7 

10. Which of the following statements is TRUE about oxidation states?
     a) They always represent the actual charges on atoms in a compound.
     b) They are used to keep track of electron transfer in chemical reactions.
     c) They are always positive whole numbers.
     d) They are not applicable to covalent compounds.

     Answer: b) They are used to keep track of electron transfer in chemical reactions.

@Ethioquizzes
@Ethiomatrichub
@Ethiomatrics


ለመላው የክርስትና እምነት ተከታዮች በሙሉ እንኳን ለብርሃነ ትንሣኤው አደረሳችሁ ::

መልካም በዓል እንመኛለን  ✨


Ethio Quizzes


📚 History common questions for EUEE about Ethiopian Muslim and Christian wars, with answers:

1. What was the main religion practiced in the Ethiopian highlands before the arrival of Islam in the region?

A. Judaism
B. Hinduism
C. Christianity
D. Buddhism

Answer: C. Christianity

2. Which of the following groups were instrumental in spreading Islam in the Horn of Africa, including Ethiopia?

A. The Egyptians
B. The Persians
C. The Arabs
D. The Turks

Answer: C. The Arabs

3. What was the main reason for the conflict between the Ethiopian Christian empire and the Adal Sultanate in the 16th century?

A. Control of the Red Sea trade routes.
B. Differences in religious beliefs and practices.
C. Disputes over land and resources.
D. All of the above.

Answer: D. All of the above.

4. Who was the leader of the Adal Sultanate during its major conflict with the Ethiopian empire in the 16th century?

A. Ahmed Gragn
B. Imam Ahmad ibn Ibrahim al-Ghazi
C. Muhammad ibn Az-Zubayr
D. Ahmad ibn Abi al-Fadl al-Muqri

Answer: B. Imam Ahmad ibn Ibrahim al-Ghazi

5. What was the name of the Ethiopian emperor who fought against the Adal Sultanate in the 16th century?

A. Amda Seyon I
B. Zara Yaqob
C. Gelawdewos
D. Lebna Dengel

Answer: D. Lebna Dengel

6. What was the significance of the Battle of Harer in 1543?

A. It marked the beginning of the Adal invasion of Ethiopia.
B. It was a decisive victory for the Ethiopian forces, ending the Adal invasion.
C. It resulted in the death of Imam Ahmad ibn Ibrahim al-Ghazi.
D. It led to the conversion of many Ethiopian Christians to Islam.

Answer: C. It resulted in the death of Imam Ahmad ibn Ibrahim al-Ghazi.

7. Which of the following was a consequence of the long war between the Ethiopian empire and the Adal Sultanate in the 16th century?

A. The weakening of both empires.
B. The rise of new power centers in the region.
C. The spread of Islam in Ethiopia.
D. All of the above.

Answer: D. All of the above.

8. Which European power played a significant role in supporting the Ethiopian empire during its conflict with the Adal Sultanate?

A. Portugal
B. Spain
C. England
D. France

Answer: A. Portugal

9. What was the main reason for the Ethiopian government's suppression of Somali nationalism in the Ogaden region in the 1970s?

A. Religious differences between Ethiopians and Somalis.
B. A desire to maintain control over the strategically important Ogaden region.
C. Fear of Somali secession from Ethiopia.
D. All of the above.

Answer: D. All of the above.

10. What is the name of the Ethiopian province that was at the heart of the Ethiopian-Somali conflict in the 1970s?

A. Tigray
B. Oromia
C. Amhara
D. Ogaden

Answer: D. Ogaden

11. Which of the following was a key figure in the Ethiopian resistance against the Italian occupation during World War II?

A. Emperor Haile Selassie
B. Ras Desta Demtu
C. Ras Seyoum Mengesha
D. All of the above

Answer: D. All of the above.

12. The Ethiopian-Eritrean conflict in the 1990s was primarily due to:

A. Religious differences between Ethiopian Christians and Eritrean Muslims.
B. Disputes over control of the Eritrean port of Massawa.
C. Eritrean demands for independence from Ethiopia.
D. All of the above.

Answer: C. Eritrean demands for independence from Ethiopia.

13. Which of the following is an example of a peaceful resolution of a conflict between Ethiopian Muslims and Christians?

A. The establishment of the Harar Emirate
B. The defeat of the Adal Sultanate by the Ethiopian empire
C. The formation of the Oromo Liberation Front
D. The creation of the Ethiopian Islamic Affairs Supreme Council

Answer: D. The creation of the Ethiopian Islamic Affairs Supreme Council

@Ethioquizzes
@Ethiomatrichub
@Ethiomatrics


Model Exam 2025, All Subjects whith their Answers.pdf
19.3Мб
📚 All in One Oromia Grade 12 Model Exam 2025 with answers

All subject for natural and social

@Ethioquizzes
@Ethiomatrichub
@Ethiomatrics


📌ጂኦግራፊ የምርጫ ጥያቄዎች ማትሪክ ላይ ሊመጡ የሚችሉ ከነመልሶቻቸው

📚 Multiple Choice Geography Questions

1. Which of the following is an example of an internal force?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

2. Which of the following is an example of an external force?
(a) Earthquakes
(b) Volcanic eruptions
(c) Glaciers
(d) Rivers

3. Which of the following is the primary force responsible for the formation of mountains?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

4. Which of the following is the primary force responsible for the formation of valleys?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

5. Which of the following is the primary force responsible for the formation of sand dunes?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

6. Which of the following is the primary force responsible for the formation of coral reefs?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

7. Which of the following is the primary force responsible for the formation of sinkholes?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

8. Which of the following is the primary force responsible for the formation of waterfalls?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

9. Which of the following is the primary force responsible for the formation of glaciers?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

10. Which of the following is the primary force responsible for the formation of volcanoes?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

11. Which of the following is the primary force responsible for the formation of earthquakes?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

12. Which of the following is the primary force responsible for the formation of canyons?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

13. Which of the following is the primary force responsible for the formation of deltas?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

14. Which of the following is the primary force responsible for the formation of fjords?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

15. Which of the following is the primary force responsible for the formation of atolls?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

16. Which of the following is the primary force responsible for the formation of sea caves?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

17. Which of the following is the primary force responsible for the formation of stalactites and stalagmites?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

18. Which of the following is the primary force responsible for the formation of sandbars?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

19. Which of the following is the primary force responsible for the formation of mesas and buttes?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

20. Which of the following is the primary force responsible for the formation of arches and natural bridges?
(a) Erosion
(b) Plate tectonics
(c) Weathering
(d) Mass wasting

Answer Key:

1. b
2. c
3. b
4. a
5. c
6. d
7. d
8. a
9. d
10. b
11. b
12. a
13. a
14. a
15. b
16. a
17. d
18. a
19. a
20. a

@Ethioquizzes
@Ethiomatrichub
@Ethiomatrics


Репост из: Ethio Matrics
#MoE

" ከ2019 ጀምሮ 3ኛ ዓመት የጨረሱ ተማሪዎች 4ኛ አመት ከመግባታቸው በፊት የ1 ዓመት አገልግሎት እንዲሰጡ ይደረጋል " - ብርሃኑ ነጋ (ፕሮፌሰር)

በዩኒቨርሲቲ የሚማሩ 3ኛ ዓመት የጨረሱ ተማሪዎች 4ኛ ዓመት ሳይገቡ በፊት የአንድ ዓመት አገልግሎት እንዲሰጡ ለማድረግ የተጀመረው እንቅስቃሴ ከ2019 ዓ/ም ጀምሮ ተግባር ላይ እንደሚውል የትምህርት ሚኒስትሩ ብርሃኑ ነጋ (ፕሮፌሰር) ጠቁመዋል።

ብርሃኑ ነጋ (ፕሮፌሰር) ፤ " በሚቀጥለው ዓመት ላይደርስልን ይችላል ግን ህጋዊ ስርዓቱን በሙሉ ጨርሰን በ2019 ዩኒቨርሲቲ ውስጥ የሚማሩ 3ኛ ዓመት የጨረሱ ተማሪዎች ከ2019 ጀምሮ 4ኛ አመት ከመግባታቸው በፊት የ1 ዓመት አገልግሎት እንዲሰጡ ይድረጋል " ብለዋል።

" ከዚህ በፊት የነበረ ነው አዲስ አይደለም በጃንሆይ ጊዜ (በአጼ ኃይለስላሴ ጊዜ ማለታቸው ነው) የነበረ ነው " ሲሉ ገልጸዋል።

" ሁለት ጥቅም አለው ብለን ነው ይሄን የምናደርገው አንደኛ ልጆቹ ዝም ብሎ የቀለም ትምህርት ብቻ ተምረው ሳይሆን ተግባራዊ የሆነ ትምህርትም ለአንድ ዓመት ሄደው የሚሰሩበት ከማህበረሰቡ ጋር የሚተዋወቁበት ነው። ሁለተኛ የአስተማሪዎች እጥረትም ስላለ ልጆችን ወደ አስተማሪነት ለአንድ አመት ቢሆንም ለማስገባት ነው " ብለዋል።


@Ethiomatrichub
@Ethioquizzes
@Ethiomatrics






ሆሳዕና ማለት ቃሉ የአረማይክ ቋንቋ ሲሆን ትርጉም አቤቱ ባክህ አሁን አድን ማለት ነው።


ለመላው ለክርስትና እምነት ተከታዮች በሙሉ እንኳን ለሆሳዕና በአል በሰላም አደረሳችሁ።

Ethio Quizzes



Показано 10 последних публикаций.