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1000 Biology Multiple choice Questions.
እባካችሁ ለጓደኞቻችሁ አጋሩ።
Credit: Saint Joseph School
Addis Ababa
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ˡᶦᵏᵉ ˢᵃᵛᵉ ˢʰᵃʳᵉ ᶜᵒᵐᵐᵉⁿᵗ
@Quiz_channel100
እባካችሁ ለጓደኞቻችሁ አጋሩ።
Credit: Saint Joseph School
Addis Ababa
♡ ㅤ ⎙ㅤ ⌲ ✉️
ˡᶦᵏᵉ ˢᵃᵛᵉ ˢʰᵃʳᵉ ᶜᵒᵐᵐᵉⁿᵗ
@Quiz_channel100
Subject :mathematics
Grade: 9
1. Which of the following best describes the notion of sets?
A) A collection of unrelated elements
B) A group of elements with a common property
C) A single element
D) A random assortment of numbers
2. What is the result of the operation of intersection between two sets?
A) Elements that are common to both sets
B) All elements of the two sets combined
C) Elements unique to the first set
D) Elements unique to the second set
3. Which of the following is an example of a rational number?
A) √2
B) -5
C) 3/4
D) π
4. What type of number is √2?
A) Rational
B) Integer
C) Irrational
D) Real
5. What is the sum of the interior angles of a convex polygon with 5 sides?
A) 540 degrees
B) 360 degrees
C) 720 degrees
D) 180 degrees
6. What is the ratio of perimeters of two similar plane figures if the ratio of their sides is 3:5?
A) 3:5
B) 5:3
C) 8:15
D) 15:8
7. In solving equations, what is the value of x in the equation 2x + 5 = 15?
A) x = 5
B) x = 6
C) x = 7
D) x = 8
8. Which of the following is an example of a linear inequality?
A) x² > 5
B) 3x + 4 < 10
C) √x ≥ 3
D) |x| = 2
9. What trigonometric ratio represents the ratio of the opposite side to the hypotenuse in a right-angled triangle?
A) Sin
B) Cos
C) Tan
D) Cot
10. What is the sum of the exterior angles of a convex polygon with 7 sides?
A) 540 degrees
B) 360 degrees
C) 720 degrees
D) 180 degrees
11. Which of the following is a scalar quantity?
A) Velocity
B) Force
C) Mass
D) Displacement
12. What is the representation of a vector with magnitude 5 and direction due east?
A) 5i
B) 5j
C) 5i + 5j
D) 5i - 5j
13. How many degrees are in a full rotation in a two-dimensional vector space?
A) 180 degrees
B) 360 degrees
C) 90 degrees
D) 270 degrees
14. Which of the following is an example of a rational number?
A) √3
B) 2/3
C) -√5
D) π
15. What is the result of the operation of union between two sets?
A) Elements that are common to both sets
B) All elements of the two sets combined
C) Elements unique to the first set
D) Elements unique to the second set
16. What type of number is 5/7?
A) Rational
B) Integer
C) Irrational
D) Real
17. What trigonometric ratio represents the ratio of the adjacent side to the hypotenuse in a right-angled triangle?
A) Sin
B) Cos
C) Tan
D) Cot
18. What trigonometric ratio represents the ratio of the opposite side to the adjacent side in a right-angled triangle?
A) Sin
B) Cos
C) Tan
D) Cot
19. Which of the following is an example of a linear equation?
A) x² = 9
B) 2x + 3 = 7
C) |x| = 4
D) √x = 2
20. What is the result of the operation of difference between two sets?
A) Elements that are common to both sets
B) All elements of the two sets combined
C) Elements unique to the first set
D) Elements unique to the second set
Answer
1. B
2. A
3. C
4. C
5. A
6. A
7. B
8. B
9. A
10. B
11. C
12. A
13. B
14. B
15. B
16. A
17. B
18. C
19. B
20. A
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Grade: 9
1. Which of the following best describes the notion of sets?
A) A collection of unrelated elements
B) A group of elements with a common property
C) A single element
D) A random assortment of numbers
2. What is the result of the operation of intersection between two sets?
A) Elements that are common to both sets
B) All elements of the two sets combined
C) Elements unique to the first set
D) Elements unique to the second set
3. Which of the following is an example of a rational number?
A) √2
B) -5
C) 3/4
D) π
4. What type of number is √2?
A) Rational
B) Integer
C) Irrational
D) Real
5. What is the sum of the interior angles of a convex polygon with 5 sides?
A) 540 degrees
B) 360 degrees
C) 720 degrees
D) 180 degrees
6. What is the ratio of perimeters of two similar plane figures if the ratio of their sides is 3:5?
A) 3:5
B) 5:3
C) 8:15
D) 15:8
7. In solving equations, what is the value of x in the equation 2x + 5 = 15?
A) x = 5
B) x = 6
C) x = 7
D) x = 8
8. Which of the following is an example of a linear inequality?
A) x² > 5
B) 3x + 4 < 10
C) √x ≥ 3
D) |x| = 2
9. What trigonometric ratio represents the ratio of the opposite side to the hypotenuse in a right-angled triangle?
A) Sin
B) Cos
C) Tan
D) Cot
10. What is the sum of the exterior angles of a convex polygon with 7 sides?
A) 540 degrees
B) 360 degrees
C) 720 degrees
D) 180 degrees
11. Which of the following is a scalar quantity?
A) Velocity
B) Force
C) Mass
D) Displacement
12. What is the representation of a vector with magnitude 5 and direction due east?
A) 5i
B) 5j
C) 5i + 5j
D) 5i - 5j
13. How many degrees are in a full rotation in a two-dimensional vector space?
A) 180 degrees
B) 360 degrees
C) 90 degrees
D) 270 degrees
14. Which of the following is an example of a rational number?
A) √3
B) 2/3
C) -√5
D) π
15. What is the result of the operation of union between two sets?
A) Elements that are common to both sets
B) All elements of the two sets combined
C) Elements unique to the first set
D) Elements unique to the second set
16. What type of number is 5/7?
A) Rational
B) Integer
C) Irrational
D) Real
17. What trigonometric ratio represents the ratio of the adjacent side to the hypotenuse in a right-angled triangle?
A) Sin
B) Cos
C) Tan
D) Cot
18. What trigonometric ratio represents the ratio of the opposite side to the adjacent side in a right-angled triangle?
A) Sin
B) Cos
C) Tan
D) Cot
19. Which of the following is an example of a linear equation?
A) x² = 9
B) 2x + 3 = 7
C) |x| = 4
D) √x = 2
20. What is the result of the operation of difference between two sets?
A) Elements that are common to both sets
B) All elements of the two sets combined
C) Elements unique to the first set
D) Elements unique to the second set
Answer
1. B
2. A
3. C
4. C
5. A
6. A
7. B
8. B
9. A
10. B
11. C
12. A
13. B
14. B
15. B
16. A
17. B
18. C
19. B
20. A
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ለ 12ኛ ክፍል ተፈታኞች መልካም ዜና
ጥያቄዎችን የምታገኙበትን ምርጥ ቻናሎች ልጋብዛቹ ትወዳላቹ።
ጥያቄዎችን የምታገኙበትን ምርጥ ቻናሎች ልጋብዛቹ ትወዳላቹ።
ለ 12ኛ ክፍል ተፈታኞች መልካም ዜና
ጥያቄዎችን የምታገኙበትን ምርጥ ቻናሎች ልጋብዛቹ ትወዳላቹ።
ጥያቄዎችን የምታገኙበትን ምርጥ ቻናሎች ልጋብዛቹ ትወዳላቹ።
Chemistry Grade 12 Unit 1
Multiple choice questions with answers
1. What is the pH of a 0.01 M solution of a strong diprotic acid?
a) 1
b) 2
c) Slightly greater than 2
d) Cannot be determined without knowing the acid's identity
2. A solution has a pH of 4. What is its pOH?
a) 4
b) 10
c) 14
d) Cannot be determined without knowing the temperature
3. Which species acts as a Lewis acid in the reaction
BF₃ + NH₃ → F₃B-NH₃?
a) BF₃ b) NH₃
c) F₃B⁻ d) NH₃⁺
4. Which statement best describes an amphiprotic species?
a) It can only accept a proton.
b) It can only donate a proton.
c) It can both donate and accept a proton.
d) It cannot donate or accept a proton
5. A Brønsted-Lowry base is defined as a substance that:
a) Accepts a proton.
b) Donates a proton.
c) Accepts an electron pair.
d) Donates an electron pair.
Answers
1. B
2. B
3. A
4. C
5. A
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Multiple choice questions with answers
1. What is the pH of a 0.01 M solution of a strong diprotic acid?
a) 1
b) 2
c) Slightly greater than 2
d) Cannot be determined without knowing the acid's identity
2. A solution has a pH of 4. What is its pOH?
a) 4
b) 10
c) 14
d) Cannot be determined without knowing the temperature
3. Which species acts as a Lewis acid in the reaction
BF₃ + NH₃ → F₃B-NH₃?
a) BF₃ b) NH₃
c) F₃B⁻ d) NH₃⁺
4. Which statement best describes an amphiprotic species?
a) It can only accept a proton.
b) It can only donate a proton.
c) It can both donate and accept a proton.
d) It cannot donate or accept a proton
5. A Brønsted-Lowry base is defined as a substance that:
a) Accepts a proton.
b) Donates a proton.
c) Accepts an electron pair.
d) Donates an electron pair.
Answers
1. B
2. B
3. A
4. C
5. A
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Atomic Spectra
✅Definition:
The atomic spectrum is the range of frequencies of light emitted or absorbed by an atom during electron transitions between energy levels.
✅Types of Spectra:
❄️Emission Spectrum: Produced when electrons drop to lower energy levels and release energy as light.
❄️Absorption Spectrum: Formed when electrons absorb energy and jump to higher energy levels.
✅Key Concepts:
❄️Quantized Energy Levels: Electrons exist in fixed energy levels; they can't exist in between levels.
❄️Photons: Light is emitted or absorbed in packets called photons, with energy proportional to its frequency (E=hv).
❄️Unique to Each Element: Every element has a unique atomic spectrum, like a fingerprint.
❄️Hydrogen Spectrum:
Shows distinct spectral lines grouped into series (e.g., Lyman, Balmer, Paschen).
Example: Balmer series lies in the visible light region.
✅Applications:
❄️Identifying elements in stars (astronomy).
❄️Spectroscopy for chemical analysis.
For more @bestchannelstudy
✅Definition:
The atomic spectrum is the range of frequencies of light emitted or absorbed by an atom during electron transitions between energy levels.
✅Types of Spectra:
❄️Emission Spectrum: Produced when electrons drop to lower energy levels and release energy as light.
❄️Absorption Spectrum: Formed when electrons absorb energy and jump to higher energy levels.
✅Key Concepts:
❄️Quantized Energy Levels: Electrons exist in fixed energy levels; they can't exist in between levels.
❄️Photons: Light is emitted or absorbed in packets called photons, with energy proportional to its frequency (E=hv).
❄️Unique to Each Element: Every element has a unique atomic spectrum, like a fingerprint.
❄️Hydrogen Spectrum:
Shows distinct spectral lines grouped into series (e.g., Lyman, Balmer, Paschen).
Example: Balmer series lies in the visible light region.
✅Applications:
❄️Identifying elements in stars (astronomy).
❄️Spectroscopy for chemical analysis.
For more @bestchannelstudy
Biology Grade 12 Unit 5 Nervous System MCQs with answers.
1. What is the primary function of the nervous system?
A. To produce hormones
B. To transport nutrients
C. To transmit signals between different parts of the body
D. To digest food
Answer: C. To transmit signals between different parts of the body
2. Which part of the nervous system is responsible for voluntary movements?
A. Autonomic nervous system
B. Central nervous system
C. Somatic nervous system
D. Peripheral nervous system
Answer: C. Somatic nervous system
3. What are the basic units of the nervous system?
A. Neurons
B. Glial cells
C. Synapses
D. Axons
Answer: A. Neurons
4. Which part of the neuron receives signals from other neurons?
A. Axon
B. Dendrites
C. Soma
D. Myelin sheath
Answer: B. Dendrites
5. What is the role of myelin in the nervous system?
A. To produce neurotransmitters
B. To protect and insulate axons
C. To receive signals from the environment
D. To connect different types of neurons
Answer: B. To protect and insulate axons
6. Which structure in the brain is responsible for coordinating voluntary movements?
A. Medulla oblongata
B. Cerebellum
C. Hippocampus
D. Hypothalamus
Answer: B. Cerebellum
7. What part of the brain controls the body's involuntary functions, such as
heartbeat and breathing?
A. Cerebrum
B. Medulla oblongata
C. Thalamus
D. Cerebellum
Answer: B. Medulla oblongata
8. Which system controls the fight or flight response?
A. Parasympathetic nervous system
B. Sympathetic nervous system
C. Enteric nervous system
D. Central nervous system
Answer: B. Sympathetic nervous system
9. What is a reflex action?
A. A voluntary response to a stimulus
B. An involuntary response that occurs without conscious thought
C. A slow reaction to pain
D. A learned behavior
Answer: B. An involuntary response that occurs without conscious thought
10. Which part of the nervous system connects the brain to the rest of the body?
A. Central nervous system
B. Peripheral nervous system
C. Reflex arc
D. Sympathetic nervous system
Answer: B. Peripheral nervous system
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1. What is the primary function of the nervous system?
A. To produce hormones
B. To transport nutrients
C. To transmit signals between different parts of the body
D. To digest food
Answer: C. To transmit signals between different parts of the body
2. Which part of the nervous system is responsible for voluntary movements?
A. Autonomic nervous system
B. Central nervous system
C. Somatic nervous system
D. Peripheral nervous system
Answer: C. Somatic nervous system
3. What are the basic units of the nervous system?
A. Neurons
B. Glial cells
C. Synapses
D. Axons
Answer: A. Neurons
4. Which part of the neuron receives signals from other neurons?
A. Axon
B. Dendrites
C. Soma
D. Myelin sheath
Answer: B. Dendrites
5. What is the role of myelin in the nervous system?
A. To produce neurotransmitters
B. To protect and insulate axons
C. To receive signals from the environment
D. To connect different types of neurons
Answer: B. To protect and insulate axons
6. Which structure in the brain is responsible for coordinating voluntary movements?
A. Medulla oblongata
B. Cerebellum
C. Hippocampus
D. Hypothalamus
Answer: B. Cerebellum
7. What part of the brain controls the body's involuntary functions, such as
heartbeat and breathing?
A. Cerebrum
B. Medulla oblongata
C. Thalamus
D. Cerebellum
Answer: B. Medulla oblongata
8. Which system controls the fight or flight response?
A. Parasympathetic nervous system
B. Sympathetic nervous system
C. Enteric nervous system
D. Central nervous system
Answer: B. Sympathetic nervous system
9. What is a reflex action?
A. A voluntary response to a stimulus
B. An involuntary response that occurs without conscious thought
C. A slow reaction to pain
D. A learned behavior
Answer: B. An involuntary response that occurs without conscious thought
10. Which part of the nervous system connects the brain to the rest of the body?
A. Central nervous system
B. Peripheral nervous system
C. Reflex arc
D. Sympathetic nervous system
Answer: B. Peripheral nervous system
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Which type of bonding is responsible for the physical properties of metals?
Anonymous Quiz
10%
Covalent bond
10%
Ionic bond
72%
Metallic bond
7%
Hydrogen bond