Which of the following is a type of voltaic cell?
Anonymous Quiz
62%
A. Lead storage battery
13%
B. Electrolysis aluminum
22%
C. Electrolytic cell
3%
D. Electroplating cell
What is the direction of flow of electrons in an electrolytic cell?
Anonymous Quiz
35%
Anode to cathode internally
23%
Cathode to anode externally
23%
Cathode to the anode in the solution
19%
Anode to cathode externally
Which one of the following is Vector Quantity?
Anonymous Quiz
29%
Electric Current
8%
Distance
8%
Pressure
56%
Weight
A chemical reaction that releases heat energy to the surrounding is known as ______.
Anonymous Quiz
69%
exothermic reaction
15%
endothermic reaction
10%
decomposition reaction
5%
combination reaction
A type of reaction in which two compounds react together to form two or more products by exchanging reactants ions is known as ___.
Anonymous Quiz
17%
decomposition reaction
3%
combination reaction
3%
single displacement reaction
77%
double displacement reaction
The measured amount of product obtained in any chemical reaction is known as _____.
Anonymous Quiz
64%
stoichiometry
6%
limiting reactant
11%
excess reactant
19%
actual yield
#Debre_Tabor_University
በ2019 ዓ.ም ወደ ደብረ ታቦር ዩኒቨርሲቲ የተመደባችሁ እና የሪሚዲያል ፕሮግራም የማለፊያ ውጤት ያመጣችሁ አዲስ ተማሪዎች የ2019 ዓ.ም የትምህርት ዘመን ምዝገባ ህዳር 10 እና 11/2019 ዓ.ም የሚካሄድ መሆኑን ዩኒቨርሲቲው አሳውቋል፡፡
ለምዝገባ ስትሔዱ ልትይዟቸው የሚገቡ፦
● የ8ኛ ክፍል ሰርተፊኬት ዋናውና ኮፒው፣
● የ12ኛ ክፍል ሰርተፍኬት ዋናውና ኮፒው፣
● ከ9-12ኛ ክፍል ትራንስክሪፕት ዋናውና ኮፒው፣
● መጠኑ 3×4 የሆነ አራት ፎቶግራፍ፣
● የፋይዳ መታወቂያ (Digital ID) ፣
● አንሶላ፣ ብርድ ልብስ፣ ትራስ ልብስ እና የስፖርት ልብስ።
@maths_group11
በ2019 ዓ.ም ወደ ደብረ ታቦር ዩኒቨርሲቲ የተመደባችሁ እና የሪሚዲያል ፕሮግራም የማለፊያ ውጤት ያመጣችሁ አዲስ ተማሪዎች የ2019 ዓ.ም የትምህርት ዘመን ምዝገባ ህዳር 10 እና 11/2019 ዓ.ም የሚካሄድ መሆኑን ዩኒቨርሲቲው አሳውቋል፡፡
ለምዝገባ ስትሔዱ ልትይዟቸው የሚገቡ፦
● የ8ኛ ክፍል ሰርተፊኬት ዋናውና ኮፒው፣
● የ12ኛ ክፍል ሰርተፍኬት ዋናውና ኮፒው፣
● ከ9-12ኛ ክፍል ትራንስክሪፕት ዋናውና ኮፒው፣
● መጠኑ 3×4 የሆነ አራት ፎቶግራፍ፣
● የፋይዳ መታወቂያ (Digital ID) ፣
● አንሶላ፣ ብርድ ልብስ፣ ትራስ ልብስ እና የስፖርት ልብስ።
@maths_group11
❤3
How many moles of HCl are present in 0.8 L of a 0.5 M HCl solution?
Anonymous Quiz
0%
1.6 mol
45%
0.625 mol
27%
1.1 mol
27%
0.4 mol
How many grams of sodium metal are needed to react with 10.0 g of water?
Anonymous Quiz
15%
12.88 g
31%
113.2 g
38%
56.8 g
15%
41.63 g
Chemistry question
Which of the following is a property of covalent compounds? Covalent
compounds: (2014 EUEE)
A. Is crystalline solids at room temperature.
B. Is generally insoluble in water.
C. Has high melting and boiling points.
D. Is non volatile.
Write your answer under the comment! 🙏
Which of the following is a property of covalent compounds? Covalent
compounds: (2014 EUEE)
A. Is crystalline solids at room temperature.
B. Is generally insoluble in water.
C. Has high melting and boiling points.
D. Is non volatile.
Write your answer under the comment! 🙏
Multiple Choice Questions Collected From Grade 12 Unit 1
1) Which of the following best describes a sequence?
A) A group of numbers arranged in a specific order
B) A set of random numbers
C) Numbers that are not related to each other
D) A sequence is not a mathematical concept
Answer: A
Explanation: A sequence is a list of numbers arranged in a specific order, where each number is related to the others by a defined rule.
---
2) What is the common difference in the arithmetic sequence: 3, 7, 11, 15, ...?
A) 2
B) 3
C) 4
D) 5
Answer: A
Explanation: The common difference is found by subtracting any term from the next term (7 - 3 = 4).
---
3) In a geometric sequence, if the first term is 2 and the common ratio is 3, what is the second term?
A) 6
B) 8
C) 9
D) 11
Answer: A
Explanation: The second term is found by multiplying the first term by the common ratio (2 × 3 = 6).
---
4) What does the sigma notation represent in mathematics?
A) The sum of a sequence
B) The product of a sequence
C) The average of a sequence
D) The difference of a sequence
Answer: A
Explanation: Sigma notation (Σ) is used to denote the sum of a sequence of numbers.
---
5) What is the sum of the first 5 terms of the arithmetic sequence: 2, 5, 8, 11, ...?
A) 30
B) 33
C) 35
D) 40
Answer: B
Explanation: The first five terms are 2, 5, 8, 11, and 14. Their sum is 2 + 5 + 8 + 11 + 14 = 40.
---
6) Which type of series does not have a finite sum?
A) Arithmetic series
B) Geometric series
C) Infinite series
D) Convergent series
Answer: C
Explanation: Infinite series can continue indefinitely and may not converge to a finite sum.
---
7) An arithmetic progression has a first term of 4 and a common difference of 3. What is the 10th term?
A) 31
B) 30
C) 34
D) 33
Answer: A
Explanation: The formula for the nth term is aₙ = a₁ + (n - 1)d. Thus, a₁₀ = 4 + (10 - 1) ⋅ 3 = 31.
---
8) In a geometric sequence, if the first term is 5 and the common ratio is 2, what is the fourth term?
A) 10
B) 15
C) 20
D) 25
Answer: C
Explanation: The fourth term can be calculated as a₄ = a₁ ⋅ rⁿ⁻¹ = 5 ⋅ 2³ = 40.
---
9) What is the formula to find the nth term of an arithmetic sequence?
A) aₙ = a₁ + (n - 1)d
B) aₙ = a₁ × rⁿ⁻¹
C) aₙ = a₁ + rd
D) aₙ = a₁ ÷ rⁿ⁻¹
Answer: A
Explanation: The formula for finding the nth term in an arithmetic sequence is aₙ = a₁ + (n - 1)d.
---
10) Which of the following is an example of an arithmetic sequence?
A) 2, 4, 8, 16, ...
B) 3, 6, 9, 12, 15 ...
C) 1, 3, 9, 27, ...
D) 5, 10, 20, 40, ...
1) Which of the following best describes a sequence?
A) A group of numbers arranged in a specific order
B) A set of random numbers
C) Numbers that are not related to each other
D) A sequence is not a mathematical concept
Explanation: A sequence is a list of numbers arranged in a specific order, where each number is related to the others by a defined rule.
---
2) What is the common difference in the arithmetic sequence: 3, 7, 11, 15, ...?
A) 2
B) 3
C) 4
D) 5
Explanation: The common difference is found by subtracting any term from the next term (7 - 3 = 4).
---
3) In a geometric sequence, if the first term is 2 and the common ratio is 3, what is the second term?
A) 6
B) 8
C) 9
D) 11
Explanation: The second term is found by multiplying the first term by the common ratio (2 × 3 = 6).
---
4) What does the sigma notation represent in mathematics?
A) The sum of a sequence
B) The product of a sequence
C) The average of a sequence
D) The difference of a sequence
Explanation: Sigma notation (Σ) is used to denote the sum of a sequence of numbers.
---
5) What is the sum of the first 5 terms of the arithmetic sequence: 2, 5, 8, 11, ...?
A) 30
B) 33
C) 35
D) 40
Explanation: The first five terms are 2, 5, 8, 11, and 14. Their sum is 2 + 5 + 8 + 11 + 14 = 40.
---
6) Which type of series does not have a finite sum?
A) Arithmetic series
B) Geometric series
C) Infinite series
D) Convergent series
Explanation: Infinite series can continue indefinitely and may not converge to a finite sum.
---
7) An arithmetic progression has a first term of 4 and a common difference of 3. What is the 10th term?
A) 31
B) 30
C) 34
D) 33
Explanation: The formula for the nth term is aₙ = a₁ + (n - 1)d. Thus, a₁₀ = 4 + (10 - 1) ⋅ 3 = 31.
---
8) In a geometric sequence, if the first term is 5 and the common ratio is 2, what is the fourth term?
A) 10
B) 15
C) 20
D) 25
Explanation: The fourth term can be calculated as a₄ = a₁ ⋅ rⁿ⁻¹ = 5 ⋅ 2³ = 40.
---
9) What is the formula to find the nth term of an arithmetic sequence?
A) aₙ = a₁ + (n - 1)d
B) aₙ = a₁ × rⁿ⁻¹
C) aₙ = a₁ + rd
D) aₙ = a₁ ÷ rⁿ⁻¹
Explanation: The formula for finding the nth term in an arithmetic sequence is aₙ = a₁ + (n - 1)d.
---
10) Which of the following is an example of an arithmetic sequence?
A) 2, 4, 8, 16, ...
B) 3, 6, 9, 12, 15 ...
C) 1, 3, 9, 27, ...
D) 5, 10, 20, 40, ...
❤3💯1
Qubee exam book physics 2013(14).pdf
3.2 MB
Physics EUEE 2011_2013 with answer
❤3
A train is moving with a velocity of 40 m/s. It slows down uniformly and comes to a stop in 20 seconds. What is the train's acceleration?
Anonymous Quiz
50%
-2 m/s²
50%
2 m/s²
0%
-1 m/s²
0%
1 m/s²
Two forces F1 and F2 act perpendicular to an object of mass m= 5kg. The magnitude of the force F1= 20N and F2= 15N. What is magnitude of its acceleration?
Anonymous Quiz
17%
1.6m/s²
50%
5m/s²
17%
1m/s²
17%
7m/s²