The element with atomic number 35 belongs to:
Anonymous Quiz
8%
s-block
49%
p-block
34%
d-block
9%
f-block
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Which technique is most commonly used to obtain isolated bacterial colonies?
Anonymous Quiz
15%
Pour Plate Method
45%
Spread Plate Method
23%
Streak Plate Method
17%
Enrichment Culture
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Math's Grade 12 Unit 3
#5 Mcq with answer
1. Which statement about random sampling is FALSE?
A) It minimizes investigator bias.
B) It ensures proportional representation of subgroups.
C) It requires careful planning.
D) It applies to any population type.
2. If a new value equal to the mean is added to a dataset, which statement is true?
A) Mean increases, standard deviation decreases.
B) Mean stays the same, standard deviation decreases.
C) Mean stays the same, standard deviation increases.
D) Mean and standard deviation remain unchanged.
3. In a distribution where Mean = 12, Median = 14, Mode = 16, the skewness is:
A) Positively skewed
B) Symmetrical
C) Negatively skewed
D) Not determinable
4. If all values in a dataset are multiplied by 3, the variance becomes:
A) 3 times the original
B) 9 times the original
C) Unchanged
D) √3 times the original
5. Which sampling method divides the population into homogeneous subgroups?
A) Simple random sampling
B) Cluster sampling
C) Stratified sampling
D) Systematic sampling
Answer
1. B
2. B
3. C
4. B
5. C
@maths_group11
@maths_group11
#5 Mcq with answer
1. Which statement about random sampling is FALSE?
A) It minimizes investigator bias.
B) It ensures proportional representation of subgroups.
C) It requires careful planning.
D) It applies to any population type.
2. If a new value equal to the mean is added to a dataset, which statement is true?
A) Mean increases, standard deviation decreases.
B) Mean stays the same, standard deviation decreases.
C) Mean stays the same, standard deviation increases.
D) Mean and standard deviation remain unchanged.
3. In a distribution where Mean = 12, Median = 14, Mode = 16, the skewness is:
A) Positively skewed
B) Symmetrical
C) Negatively skewed
D) Not determinable
4. If all values in a dataset are multiplied by 3, the variance becomes:
A) 3 times the original
B) 9 times the original
C) Unchanged
D) √3 times the original
5. Which sampling method divides the population into homogeneous subgroups?
A) Simple random sampling
B) Cluster sampling
C) Stratified sampling
D) Systematic sampling
Answer
2. B
3. C
4. B
5. C
@maths_group11
@maths_group11
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For the relation {(1, 2), (2, 3), (3, 4), (4, 5), (5, 6)}, then what is the domain of the given relation?
Anonymous Quiz
81%
{1, 2, 3, 4, 5}
8%
{2, 3, 4, 5}
10%
{2, 3, 4, 5, 6}
2%
{1, 3, 4, 5, 6}
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If the domain of the relation R = {(x, y): y= x + 3} is A = {1, 2, 3, 4} then what is the range of R?
Anonymous Quiz
9%
{1, 2, 3, 4}
79%
{4, 5, 6, 7}
10%
{2, 6, 8, 10}
2%
{3, 5, 7, 9}
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Let R = {(x, y): x, y an element of {1, 2, 3, 4, 5} and y = 2x - 1} then what is the range of R?
Anonymous Quiz
10%
{1, 2, 3, 4, 5}
20%
{1, 3, 5}
64%
{1, 3, 5, 7, 9}
7%
{7, 9}
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Let f = {(1, 2), (2, 3), (5, 6), (7, 8)} then what is the value of f(2) + f(5) ?
Anonymous Quiz
4%
6
10%
3
71%
9
15%
18
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Let f(x) = 2x + 1 and g(x) = -3x - 4 then what is f+g ?
Anonymous Quiz
8%
-3x - 3
74%
-x - 3
14%
x - 3
4%
-x + 3
Let f(x) = x + 3 and g(x) = 2x - 3 then what is the value of (2f + 3g)(1) ?
Anonymous Quiz
62%
5
20%
-5
10%
-15
9%
15
1. One of the following was feature of the reign of Tewodros II (1855-1868)?
Anonymous Quiz
21%
A. The only challenge came from Menelik of Shewan
42%
B. Church-state conflicts
27%
C. Politically united and peace full state
10%
D. The regional lords exercised full authority
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2. The battle of Embabo in 1882 was fought between Emperor Menelik II and Tekle
Haymanot while the battle of Dogali in 1887 was fought between ------------and -----------
Haymanot while the battle of Dogali in 1887 was fought between ------------and -----------
Anonymous Quiz
21%
A. Italy troops and Menelik II troops.
23%
B. Ras Alula and Italy troops
44%
C. Yohannis IV troops and Egypt troops
13%
D. Ras Manegesha and Egypt troops
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3. All of the following was the effect of the Crusade wars EXCEPT?
Anonymous Quiz
27%
A. Increased tolerance and respect among the religions
24%
B. Introduced Europeans to many new goods from the east
38%
C. Decreased the power of nobility in many countries of Europe
11%
D. Jerusalem controlled by Muslim
4. Which event happened immediately after the death of Prophet Muhammad?
Anonymous Quiz
41%
A. Muslim split in to two group namely Sunni and Shiites
22%
B. The Muslim empire was came to decline
20%
C. Muslims were absorbing Greece culture
17%
D. Muslims were harshly defeated by the people of neighbors
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5. During Zemene Mesafint period, nominal Kings of Gondar were under control of--------
Anonymous Quiz
15%
A. Tigrean nobles
26%
B. Gojjam nobles
30%
C. Ahmara nobles
28%
D. Yejju Oromo nobles
6. Which one of the following was the main reason of Etege Taytu removed from power in 1910?
Anonymous Quiz
44%
A. She was politically influenced following the illness of Emperor Menelik II
15%
B. She secretly invited Showan nobility to the throne
24%
C. She agreed the Menelik II decision to solve succession problem
17%
D. She exercised her power with old Shawan nobility
7. The cause of Oromo population movement was?
Anonymous Quiz
23%
A. the order of Gada System
49%
B. the demographic pressure and searching fertile land
15%
C. pushing factor from Somalia
13%
D. the needed undertake trade activities
8. Which of the following was NOT the most important reason for England, France and
Italy involved in the coup against Lij Eyasu?
Italy involved in the coup against Lij Eyasu?
Anonymous Quiz
28%
A. Lij Eyasu became too close friend with Ottoman Turkish
13%
B. Lij Eyasu maintained closely relation with German
36%
C. Lij Eyasu supported Somalia nationalist movement
23%
D. Lij Eyasu make some modern reforms
9. Which one of the following was CORRECT about Omotic language family?
Anonymous Quiz
13%
A. This language family speakers found in outside Ethiopia region
32%
B. Majority of its speakers are found in the northern part of Ethiopia
21%
C. This language family speakers only found in Omo river valley
34%
D Shenasha and south Ma’o are sub-group of Omotic language which speakers found outside of Omo river
10. Who was the last serious opponent of Ras Teferi rise throne?
Anonymous Quiz
27%
A. Dej. Balcha Safo
21%
B. F/H/Giorgise
29%
C. Dej. Abba Wuqaw
23%
D. Ras Gugsa
Parts of speech in English.
In English, there are eight primary parts of speech. Here they are, along with a brief description of each:
1. Noun: A word that names a person, place, thing, or idea (e.g., cat, city, love).
2. Pronoun: A word that replaces a noun to avoid repetition (e.g., he, she, it, they).
3. Verb: A word that expresses an action, occurrence, or state of being (e.g., run, is, think).
4. Adjective: A word that describes or modifies a noun or pronoun (e.g., blue, tall, interesting).
5. Adverb: A word that modifies a verb, adjective, or other adverb, often ending in -ly (e.g., quickly, very, well).
6. Preposition: A word that shows the relationship between a noun (or pronoun) and other words in a sentence (e.g., in, on, at, between).
7. Conjunction: A word that connects words, phrases, or clauses (e.g., and, but, or).
8. Interjection: A word or phrase that expresses strong emotion or surprise (e.g., wow!, ouch!, hey!).
These parts of speech work together to form sentences and convey meaning in English.
In English, there are eight primary parts of speech. Here they are, along with a brief description of each:
1. Noun: A word that names a person, place, thing, or idea (e.g., cat, city, love).
2. Pronoun: A word that replaces a noun to avoid repetition (e.g., he, she, it, they).
3. Verb: A word that expresses an action, occurrence, or state of being (e.g., run, is, think).
4. Adjective: A word that describes or modifies a noun or pronoun (e.g., blue, tall, interesting).
5. Adverb: A word that modifies a verb, adjective, or other adverb, often ending in -ly (e.g., quickly, very, well).
6. Preposition: A word that shows the relationship between a noun (or pronoun) and other words in a sentence (e.g., in, on, at, between).
7. Conjunction: A word that connects words, phrases, or clauses (e.g., and, but, or).
8. Interjection: A word or phrase that expresses strong emotion or surprise (e.g., wow!, ouch!, hey!).
These parts of speech work together to form sentences and convey meaning in English.
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