Ethiopia Student's Info

Badhaasa ethiotelecom fi Bank Hojii gamtaa waliin ta'uun qopheessaan irratti hirmaachuuf bakka Ethiotelecom jedhu xuqaa!!

Ethiotelecom yeroo jalqabaf wan gaarii hojjete🔥

✅History Entrance Questions /Work Book 🤩

🌞2004 - 2008

@Ethiopia_educations

20 chemistry multiple-choice questions with their answers:

1. What is the atomic number of carbon?

A) 6

B) 12

C) 14

D) 8
Answer: A) 6

2. Which of the following is a noble gas?

A) Oxygen

B) Nitrogen

C) Argon

D) Hydrogen
Answer: C) Argon

3. What is the chemical formula for water?

A) H2O2

B) H2O

C) O2H

D) H2O3
Answer: B) H2O

4. Which of the following represents a chemical change?

A) Melting ice

B) Dissolving sugar in water

C) Rusting iron

D) Boiling water
Answer: C) Rusting iron

5. What type of bond involves the sharing of electron pairs?

A) Ionic bond

B) Covalent bond

C) Metallic bond

D) Hydrogen bond
Answer: B) Covalent bond

6. What is the pH of a neutral solution at 25°C?

A) 0

B) 7

C) 14

D) 1
Answer: B) 7

7. Which of the following is an exothermic reaction?

A) Photosynthesis

B) Combustion

C) Melting ice

D) Dissolving salt in water
Answer: B) Combustion

8. What is the molar mass of water (H2O)?

A) 16 g/mol

B) 18 g/mol

C) 20 g/mol

D) 14 g/mol
Answer: B) 18 g/mol

9. Which of the following elements is most electronegative?

A) Fluorine

B) Oxygen

C) Nitrogen

D) Chlorine
Answer: A) Fluorine

10. What is the main component of natural gas?

A) Propane

B) Ethanol

C) Methane

D) Butane
Answer: C) Methane

11. What type of reaction is represented by the equation: A + B → AB?

A) Decomposition

B) Synthesis

C) Single replacement

D) Double replacement
Answer: B) Synthesis

12. What is the unit of pressure in the SI system?

A) Atmosphere

B) Pascal

C) Bar

D) Torr
Answer: B) Pascal

13. Which of the following is not a characteristic of acids?

A) Sour taste

B) Slippery feel

C) Turns litmus paper red

D) Reacts with metals
Answer: B) Slippery feel

14. What is the primary gas responsible for the greenhouse effect?

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen
Answer: B) Carbon dioxide
15. Which type of solution contains the maximum amount of solute that can dissolve?

A) Unsaturated

B) Saturated

C) Supersaturated

D) Concentrated
Answer: B) Saturated

16. What is the product of the reaction between an acid and a base?

A) Salt and water

B) Hydrogen gas

C) Carbon dioxide

D) Alcohol
Answer: A) Salt and water

17. Which of the following elements is a diatomic molecule in its natural state?

A) Helium

B) Sodium

C) Chlorine

D) Carbon
Answer: C) Chlorine

18. Which law states that mass is neither created nor destroyed in a chemical reaction?

A) Law of Conservation of Energy

B) Law of Definite Proportions

C) Law of Conservation of Mass

D) Dalton's Law
Answer: C) Law of Conservation of Mass
19. What is the main purpose of a catalyst in a chemical reaction?

A) Increase the temperature

B) Increase the reaction rate

C) Change the products

D) Decrease the activation energy
Answer: B) Increase the reaction rate

https://t.me/Ethiopia_educations

Ethiopia Student's Info pinned «https://youtu.be/BYyTGTM1630?si=1IvZE7WKUFU4dVoa»

https://youtu.be/BYyTGTM1630?si=1IvZE7WKUFU4dVoa

chemistry #acid base MCQ(multiple choice question)

1. Which of the following is not a
characteristic property of acids?
   A) Sour taste
   B) Ability to turn litmus paper red
   C) Reactivity with metals to
produce hydrogen gas
   D) Slippery feel

2. Which of the following is a strong acid?
   A) PH3
   B) CH3COOH
   C) HClO4
   D) HNO2

3. What happens when an acid reacts with a base?
   A) Formation of hydrogen gas
   B) Formation of water and a salt
   C) Increase in pH
   D) Decrease in temperature

4. Which of the following cannot act as an acid?
   A) HCl
   B) NaOH
   C) H2SO4
   D) H2CO3

5. Which of the following represents a weak base?
   A) NaOH
   B) NH3
   C) KOH
   D) Ca(OH)2

6. Which pH value indicates a strong acid?
   A) 2
   B) 7
   C) 10
   D) 14

7. What is the chemical formula for hydrochloric acid?
   A) HNO3
   B) H2SO4
   C) HCl
   D) HClO3

8. Which of the following is a common household base?
   A) Vinegar
   B) Lemon juice
   C) Ammonia
   D) Orange juice

9. What does a pH value of 7 indicate?
   A) Neutral solution
   B) Acidic solution
   C) Basic solution
   D) Alkaline solution

10. What is the concentration of hydrogen ions in a solution with a pH of 3?
    A) 1 x 10^-7 M
    B) 1 x 10^-3 M
    C) 1 x 10^-11 M
    D) 1 x 10^3 M

Answers:
1. D) Slippery feel
2. C) HClO4
3. B) Formation of water and a salt
4. B) NaOH
5. B) NH3
6. A) 2
7. C) HCl
8. C) Ammonia
9. A) Neutral solution
10. B) 1 x 10^-3 M

https://t.me/Ethiopia_educations

I hope these questions help you

Biology Grade 12 unit 2 Micro Organism

Question Part 2

https://youtu.be/yPiotBgUjKM?si=upnAqzxSSd1CUlCq

Biology MCQs about genetics:

1. What is the basic unit of heredity?

A) Chromosome
B) Gene
C) DNA
D) RNA 

   Answer: B) Gene

2. Which of the following structures carries genetic information?

A) Ribosome
B) Chromosome
C) Endoplasmic reticulum
D) Golgi apparatus 

   Answer: B) Chromosome

3. What is the term for different forms of a gene?

A) Alleles
B) Genotypes
C) Phenotypes
D) Chromatids 

   Answer: A) Alleles

4. In Mendelian genetics, what is the expected phenotypic ratio for a monohybrid cross?

A) 1:1
B) 3:1
C) 9:3:3:1
D) 1:2:1 

   Answer: B) 3:1

5. What is the function of messenger RNA (mRNA)?
 
A) To replicate DNA
B) To transport amino acids
C) To carry genetic information from DNA to the ribosome
D) To form the structure of ribosomes 

   Answer: C) To carry genetic information from DNA to the ribosome

6. Which of the following is a type of mutation?

   A) Insertion
   B) Deletion
   C) Substitution
   D) All of the above 

   Answer: D) All of the above

Take our fun and engaging quizzes!
https://t.me/Ethiopia_educations
https://t.me/Ethiopia_educations

is the primary purpose of wastewater treatment?

   • A) To recycle water for agricultural use

   • B) To remove contaminants and produce clean water

   • C) To generate energy from waste

   • D) To reduce the volume of waste

   Answer: B) To remove contaminants and produce clean water

2. Which of the following is NOT a common method of wastewater treatment?

   • A) Biological treatment

   • B) Chemical treatment

   • C) Thermal treatment

   • D) Magnetic treatment

   Answer: D) Magnetic treatment

#Chemistry grade 12
#Acid Base concept MCQ
1. Which of the following is a property of acids?

a) Bitter taste
b) Slippery feel
c) Turns blue litmus red
d) Turns red litmus blue
Answer: c) Turns blue litmus red

2. Which of the following is a Bronsted-Lowry base?

a) HCl
b) NH3
c) H2SO4
d) HNO3
Answer: b) NH3

3. What is the conjugate base of H2O?

a) OH-
b) H3O+
c) H2O2
d) H+
Answer: a) OH-

4. Which of the following substances can act as both an acid and a base?

a) HCl
b) NaOH
c) H2O
d) CH4
Answer: c) H2O

5. Which of the following is the definition of an acid according to the Brønsted-Lowry theory?**
A. A substance that donates a proton (H+)
B. A substance that accepts a proton (H+)
C. A substance that produces hydroxide ions (OH-)
D. A substance that produces hydrogen ions (H+)

Answer: A. A substance that donates a proton (H+)

Take our fun and engaging quizzes!

Click here👇👇👇👇to get started:
                  https://t.me/Ethiopia_educations
https://t.me/Ethiopia_educations

QUESTIONS

GRADE 9 --- 12
BIOLOGY :
CHEMISTRY :
HISTORY. ::
AGRICULTURE:
GEOGRAPHY:

QUESTIONS ALL VIDEO TUTORIAL
""""""""""""""""""""''''''''""""""""""""""""
☀️ SUBSCRIBERS NOW ☀️➡️🌼
""""""""""""""""""""""""""""""""""""""""

Grade 12 👇👇👇👇👇
Grade 12 Maths New curriculum | Question
Sequence and series
https://youtube.com/@alphatutorial475?si=ubAQ2etSK-P8bwt7

Grade 11

Physics
New curriculum | Question Fatana
🔻🔻
Unit 1
👇👇👇👇👇👇

https://youtube.com/@alphatutorial475?si=ubAQ2etSK-P8bwt7

Grade 10
Biology
Unit 1
Unit 2
Questions
Test 1 2
https://youtube.com/@alphatutorial475?si=ubAQ2etSK-P8bwt7

Grade 9👇👇👇👇👇👇👇
Maths Grade 9 New curriculum :
Unit 1
Unit 2
https://youtube.com/@alphatutorial475?si=ubAQ2etSK-P8bwt7

Chemistry grade 12
Questions
Unit 1
Unit 2
👇👇👇👇👇👇👇👇
https://youtube.com/@alphatutorial475?si=ubAQ2etSK-P8bwt7

Chemistry grade 12 ❤️👇👇👇
https://youtube.com/@alphatutorial475?si=ubAQ2etSK-P8bwt7

https://youtu.be/T9kcs_dGFRY?si=YBS_SEScBUwnTF2g

Part 3 unit 2

https://youtu.be/xrx7mGTfOYo?si=vr9nZ-pfVlInAYuQ

https://youtu.be/5d9tcH5OCmQ?si=HeOgAEuyLDwCGgM2

##Multiple Choice Questions and Answers on Biology

1. Question: What is the function of the human heart?
   - A) Pumping blood 
   - B) Digesting food 
   - C) Filtering waste 
   - D) Smelling odors 
   Answer: A) Pumping blood

2. Question: Which organelle is known as the powerhouse of the cell?
   - A) Chloroplast 
   - B) Nucleus 
   - C) Mitochondria 
   - D) Ribosome 
   Answer: C) Mitochondria

3. Question: What process describes the conversion of light energy into chemical energy in plants?
   - A) Respiration 
   - B) Fermentation 
   - C) Photosynthesis 
   - D) Transpiration 
   Answer: C) Photosynthesis

4. Question: What is the primary function of the mitochondria in a cell?
   - A) Protein synthesis 
   - B) Cellular respiration 
   - C) Photosynthesis 
   - D) Lipid synthesis 
   Answer: B) Cellular respiration

5. Question: Where does the process of digestion primarily take place in the human body?
   - A) Stomach 
   - B) Liver 
   - C) Small Intestine 
   - D) Pancreas 
   Answer: C) Small Intestine

6. Question: What is the function of red blood cells in the body?
   - A) Fighting Infections 
   - B) Carrying Oxygen 
   - C) Digesting Food 
   - D) Controlling Body Temperature 
   Answer: B) Carrying Oxygen

7. Question: Which of the following is responsible for carrying genetic information in cells?
   - A) Proteins 
   - B) Carbohydrates 
   - C) DNA 
   - D) Fats 
   Answer: C) DNA

8. Question: What is the process by which plants release water vapor through their leaves?
   - A) Osmosis 
   - B) Evaporation 
   - C) Transpiration 
   - D) Condensation 
   Answer: C) Transpiration

9. Question: Which of the following is responsible for regulating metabolism in the body?
   - A) Thyroid Gland 
   - B) Pituitary Gland 
   - C) Adrenal Gland 
   - D) Pancreas 
   Answer: A) Thyroid Gland

10. Question: What is the main function of white blood cells in the body?
    - A) Carrying Oxygen 
    - B) Digesting Food 
    - C) Fighting Infections 
    - D) Removing Waste 
    Answer: C) Fighting Infections

Take our fun and engaging quizzes!


https://t.me/quations1
https://t.me/quations1

❓| English multiple choice questions and answers
1.some people ____ set foot out of their local town . They live and die just there.
a) always
b) never
c) ever
d) sometimes

Answer b

2.The purchasers should be accountable for what has happened___piece is faulty.
a)all
b) either
c) neither
d) every

Answer d

3.If the media reported that nobody dies in the crash, then ___ of them should be alive. You don't have to cry.
a) either
b) neither
c) both
d) none

Answer c

4.next week this time, I __ all my examinations.
a) am finishing
b) have finished
c) will have finished
d) will finish

Answer c

5.you ___ speak to him like that, after all , he is your elder brother and deserves some respect.
a)will not
b)will rather not
c) ought not to
d) might not

Answer c

6.__we paid the money on time, they didn’t let us go.
a) But
b) However
c) Even so
d) Although

Answer d

7.Despite ___ day and night, Helen couldn’t be successful.

a) work
b) to work
c) to working
d) working

Answer d

8.The staff is looking forward ___ the new manager.
a) to meet
b) to meeting
c) for meeting
d) at meeting

Answer b

9.My mother caught the knife carefully __ not to cut herself.
a) in order
b) so that
c) to
d) because

Answer a

10. I think I __ have failed the test, but I'm not sure.
a) ought to
b) might
c) shall
d) should

Answer b

Join
https://t.me/Ethiopia_educations

❓| Chemistry multiple choice questions and answers
1.what is the maximum number of electrons in an atom that can have the principal quantum number n=4
a) 18
b) 8
c) 32
d) 34

Answer c

2.which quantum number is used to determine subshells?
a) principal quantum number
b) magnetic quantum number
c) azimuthal quantum number
d)spin quantum number

Answer c

3.A_∆ H corresponds to an __ process.
a) positive, endothermic
b) positive, exothermic
c) negative, endothermic
d) zero, exothermic

Answer a

4.which of the following factors does not affect the rate of chemical reactions?
a) concentration
b) humidity
c) temperature
d) nature of reactant

Answer b

5. A shift in an ionic equilibrium caused by the addition of a solute that provides
an ion that takes part in the equilibrium is known as .
a) Common-ion effect
b) Leveling effect
c) Buffer
c) Conjugation

Answer a

6.Buffer solution is a mixture of .
a) Weak base and strong acid
b) Weak base and its conjugate acid
c) Weak acid and strong acid
d) Strong acid and its conjugate base

Answer b

7.What is the color of the methyl red indicator on the exposure to acidic rain?
a) Yellow
b) Red
c) Blue
d) Colorless

Answer b

8.The number of equivalents of solute per liter of a solution is known as .
a) Molarity
b) Molality
c) Mole
d) Normality

Answer d

9.A solution containing appreciable amounts of a weak conjugate acid-base
pair is known as .
a) Buffer solution
b) Saturated solution
c) Diluted solution
d) Concentrated solution

Answer a

10.the general formula for saturated mono carboxylic acids is
a) ROR
b) RCHO
c) RCOOH
d) RCOR

Answer c
https://t.me/Ethiopia_educations