KUSH ACADEMY(Team Physics Study)

✅ Fundamental physics terms along with their definitions:

1. Force: An interaction that causes an object to change its velocity, measured in newtons (N).

2. Mass: A measure of the amount of matter in an object, typically measured in kilograms (kg).

3. Acceleration: The rate of change of velocity of an object with respect to time, measured in meters per second squared (m/s²).

4. Velocity: The speed of an object in a specific direction, expressed in meters per second (m/s).

5. Energy: The capacity to do work, which can exist in various forms such as kinetic, potential, thermal, etc., measured in joules (J).

6. Work: The process of energy transfer that occurs when a force is applied to an object over a distance, calculated as the product of force and displacement.

7. Power: The rate at which work is done or energy is transferred, measured in watts (W).

8. Kinetic Energy: The energy possessed by an object due to its motion, calculated as  KE = ½mv² .

9. Potential Energy: The energy stored in an object due to its position or configuration, commonly gravitational potential energy given by  PE = mgh .

10. Momentum: The product of an object's mass and its velocity, representing the quantity of motion it possesses, calculated as  p = mv .

11. Newton's First Law: An object at rest stays at rest, and an object in motion stays in motion with the same speed and direction unless acted upon by a net external force.

12. Newton's Second Law: The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass, expressed as  F = ma .

13. Newton's Third Law: For every action, there is an equal and opposite reaction.

14. Thermodynamics: The branch of physics that deals with heat, work, temperature, and the laws governing energy transfer.

15. Wave: A disturbance that transfers energy through space and matter, characterized by properties such as wavelength, frequency, and amplitude.

16. Frequency: The number of cycles of a wave that occur in a unit of time, measured in hertz (Hz).

17. Refraction: The bending of light or other waves as they pass from one medium to another due to a change in speed.

18. Electromagnetism: The branch of physics that studies the interaction between electric charges and magnetic fields.

19. Quantum Mechanics: The branch of physics that deals with the behavior of matter and light on the atomic and subatomic levels.

20. Relativity: A theory proposed by Albert Einstein that describes the laws of physics in relation to observers in different frames of reference, particularly regarding the effects of gravity and the speed of light.

✅✅ Biology Questions & Answers

1. Which process is primarily responsible for the production of ATP in cells?
   A) Glycolysis
   - B) Photosynthesis
   - C) Cellular respiration
   - D) Fermentation
   - Answer: C)
2. Which of the following structures is found in plant cells but not in animal cells?
   - A) Mitochondria
   - B) Ribosomes
   - C) Cell wall
   - D) Nucleus
   - Answer: C) Cell wall
3. What is the primary function of the ribosome?
   - A) DNA replication
   - B) Protein synthesis
   - C) Lipid synthesis
   - D) Energy production
   - Answer: B) Protein synthesis
4. Which molecule carries genetic information from the nucleus to the cytoplasm?
   - A) DNA
   - B) mRNA
   - C) tRNA
   - D) rRNA
   - Answer: B) mRNA
5. Which phase of mitosis is characterized by the alignment of chromosomes in the center of the cell?
   - A) Prophase
   - B) Metaphase
   - C) Anaphase
   - D) Telophase
   - Answer: B) Metaphase
6. Which of the following is an example of a homozygous genotype?
   - A) Aa
   - B) BB
   - C) AB
   - D) Bb
   - Answer: B) BB
7. Which hormone regulates the levels of glucose in the blood?
   - A) Insulin
   - B) Thyroxine
   - C) Adrenaline
   - D) Estrogen
   - Answer: A) Insulin
8. Which of the following is not a component of the central nervous system?
   - A) Brain
   - B) Spinal cord
   - C) Peripheral nerves
   - D) All of the above are part of the central nervous system
   - Answer: C) Peripheral nerves
9. Which kingdom includes multicellular, photosynthetic organisms?
   - A) Fungi
   - B) Animalia
   - C) Plantae
   - D) Protista
   - Answer: C) Plantae
10. What is the basic unit of structure and function in living organisms?
    - A) Organ
    - B) Cell
    - C) Tissue
    - D) Organ system
    - Answer: B) Cell
11. What is the primary function of chlorophyll in photosynthesis?
    - A) Absorbing water
    - B) Absorbing sunlight
    - C) Producing oxygen
    - D) Producing glucose
    - Answer: B)
12. Which of the following best describes an ecosystem?
    - A) A group of the same species living in a specific area
    - B) A community of organisms and their physical environment interacting together
    - C) The variety of life within a specific habitat
    - D) A single organism and its role in the environment
    - Answer: B)
13. What is the primary role of mitochondria in cells?
    - A) Protein synthesis
    - B) Photosynthesis
    - C) ATP production
    - D) DNA replication
    - Answer: C) ATP production
14. Which type of macromolecule are enzymes?
    - A) Carbohydrates
    - B) Lipids
    - C) Proteins
    - D) Nucleic acids
    - Answer: C) Proteins

You should have these points in mind!

✅ "Names and Formulas of Chemical Elements!"

🔺Common salt = NaCl
🔺Baking soda = NaHCO₃
🔺Washing soda = Na₂CO₃ 10H₂O
🔺Caustic Soda = NaOH
🔺Suhaga = Na₂B₄O₇ 10H₂O
🔺Alum = K₂SO₄ Al₂(SO₄)₃ 24H₂O
🔺Red medicine = KMnO₄
🔺Caustic Potash = KOH
🔺Saltpeter = KNO₃
🔺Bleaching powder = Ca(OCl)Cl
🔺lime water = Ca(OH)₂
🔺Gypsum = CaSO₄ 2H₂O
🔺Plaster of Paris = CaSO₄ ½H₂O
🔺Chalk = CaCO₃
🔺Limestone = CaCO₃
🔺Marble = CaCO₃
🔺Nausadar = NH4Cl
🔺Laughing gas = N₂O
🔺Litharge = PbO
🔺Galena = PbS
🔺Red vermilion = Pb₃O₄
🔺White lead = 2PbCO₃ Pb(OH)₂
🔺Salt acid = HCl
🔺Shore's acid = HNO₃
🔺Amalraj = HNO₃ + HCl (1 : 3)
🔺Dry ice = CO₂
🔺Green Case = FeSO₄ 7H₂O
🔺Horn Silver = AgCl
🔺Heavy water = D₂O
🔺Producer gas = CO + N₂
🔺Marsh gas = CH₄
🔺Vinegar = CH₃COOH
🔺Gemaxine = C₆H₆Cl₆
🔺Blue Case = CuSO₄ 5H₂O
🔺alcohol = C₂H₅OH
🔺Mand = C₆H₁₀O₅
🔺Grape juice = C₆H₁₂O₆
🔺sugar = C₁₂H₂₂O₁₁
🔺Urea = NH₂CONH₂
🔺Benzene = C₆H₆

✅Chemistry
⏩ About atomic theory, along with their answers:

1. Who proposed the first atomic theory based on philosophical reasoning?

a) Albert Einstein
b) John Dalton
c) Ernest Rutherford
d) Niels Bohr
Answer: b) John Dalton


2. According to John Dalton's atomic theory, atoms are:

a) Indivisible and indestructible particles
b) Made up of protons, neutrons, and electrons
c) Composed of positively charged protons and negatively charged electrons
d) Always in motion around the nucleus
Answer: a) Indivisible and indestructible particles


3. Who discovered the electron and proposed the plum pudding model of the atom?

a) Ernest Rutherford
b) J.J. Thomson
c) Niels Bohr
d) Marie Curie
Answer: b) J.J. Thomson


4. Which scientist's experiment led to the discovery of the atomic nucleus?

a) J.J. Thomson
b) Niels Bohr
c) Ernest Rutherford
d) Max Planck
Answer: c) Ernest Rutherford


5. According to Bohr's model of the atom, electrons:

a) Move in random orbits around the nucleus
b) Move in circular orbits at fixed energy levels
c) Move in continuous orbits with varying energy
d) Move at the speed of light around the nucleus
Answer: b) Move in circular orbits at fixed energy levels

Biology   EUEE
Questions and answers with explanation

1. What is the primary neurotransmitter affected by most drugs of abuse?
   A. Serotonin
   B. Dopamine
   C. Acetylcholine
   D. GABA (gamma-aminobutyric acid)

   Answer: B. Dopamine

   Explanation: Dopamine is the primary neurotransmitter affected by ...See more

2. Which part of the brain is commonly associated with addiction and reward pathways?
   A. Cerebellum
   B. Hippocampus
   C. Amygdala
   D. Nucleus accumbens

   Answer: D. Nucleus accumbens
Explanation: The nucleus accumbens is a ...See more

3. What is the term for the phenomenon where higher doses of a drug are needed to achieve the same effect over time?
   A. Tolerance
   B. Withdrawal
   C. Dependence
   D. Overdose

   Answer: A. Tolerance
Explanation: Tolerance refers to the body's ...See more

4. Which class of drugs depresses the central nervous system and slows down brain activity?
   A. Stimulants
   B. Depressants
   C. Hallucinogens
   D. Opioids

   Answer: B. Depressants
   Explanation: Depressant drugs slow down brain activity and ...See more

5. What is the term for the physiological and psychological symptoms experienced when drug use is discontinued?
   A. Tolerance
   B. Withdrawal
   C. Dependence
   D. Addiction

   Answer: B. Withdrawal
   Explanation: Withdrawal refers to the symptoms that occur ...See more

6. Which neurotransmitter is commonly associated with pleasure, reward, and addiction in the context of drug abuse?
   A. Serotonin
   B. Dopamine
   C. Acetylcholine
   D. GABA (gamma-aminobutyric acid)

   Answer: B. Dopamine
   Explanation: Dopamine is a neurotransmitter involved in ...See more

7. What is the term for the compulsive, uncontrollable use of a substance despite negative consequences?
   A. Tolerance
   B. Withdrawal
   C. Dependence
   D. Addiction

   Answer: D. Addiction
   Explanation: Addiction is characterized by ...See more

8. Which class of drugs alters perception, mood, and cognitive processes, often leading to hallucinations?
   A. Stimulants
   B. Depressants
   C. Hallucinogens
   D. Opioids

   Answer: C. Hallucinogens
   Explanation: Hallucinogens are drugs that distort ...See more

9. What is the term for the intense craving for a drug that can occur even after long periods of abstinence?
   A. Tolerance
   B. Withdrawal
   C. Relapse
   D. Craving

   Answer: D. Craving
   Explanation: Craving refers to the strong desire or ...See more

10. Which part of the brain is responsible for decision-making, impulse control, and judgment, often impaired by drug abuse?
    A. Cerebellum
    B. Prefrontal cortex
    C. Brainstem
    D. Thalamus

    Answer: B. Prefrontal cortex
    Explanation: The prefrontal cortex is involved in ...

Dear students!
This work sheets for grade 11th students.
Share, forward, invites your friends to get our daily post.