50 MOST IMPORTANT MCQS FOR MDCAT

 Here are 50 important MDCAT (Medical and Dental College Admission Test) MCQs covering key subjects: Biology, Chemistry, Physics, and English, based on past trends and UHS guidelines.                                                                    

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🔬 Biology (15 MCQs)

1. Which organelle is known as the powerhouse of the cell?
   A) Ribosome
   B) Golgi apparatus
   C) Mitochondria ✅
   D) Endoplasmic reticulum

2. DNA replication occurs during:
   A) G1 phase
   B) S phase ✅
   C) G2 phase
   D) M phase

3. Which of the following is a purine base?
   A) Cytosine
   B) Uracil
   C) Guanine ✅
   D) Thymine

4. In which organ are the Islets of Langerhans found?
   A) Liver
   B) Pancreas ✅
   C) Kidney
   D) Intestine

5. The functional unit of the kidney is:
   A) Neuron
   B) Alveolus
   C) Nephron ✅
   D) Glomerulus

6. Which blood group is known as the universal donor?
   A) AB+
   B) O- ✅
   C) O+
   D) AB-

7. Hemophilia is a:
   A) Sex-linked recessive disorder ✅
   B) Sex-linked dominant disorder
   C) Autosomal dominant disorder
   D) Autosomal recessive disorder

8. Enzyme responsible for digestion of protein in the stomach:
   A) Amylase
   B) Pepsin ✅
   C) Lipase
   D) Maltase

9. Plasmolysis occurs when a cell is placed in a:
   A) Isotonic solution
   B) Hypotonic solution
   C) Hypertonic solution ✅
   D) Distilled water

10. Which hormone is secreted by the corpus luteum?
    A) Estrogen
    B) Testosterone
    C) Progesterone ✅
    D) Oxytocin

11. Which vitamin is synthesized in the skin?
    A) A
    B) B12
    C) D ✅
    D) K

12. What is the normal pH of human blood?
    A) 6.8
    B) 7.0
    C) 7.4 ✅
    D) 8.0

13. Which part of the brain controls breathing?
    A) Cerebrum
    B) Cerebellum
    C) Medulla oblongata ✅
    D) Hypothalamus

14. Which of the following is an example of passive immunity?
    A) Vaccination
    B) Exposure to infection
    C) Mother's antibodies to baby ✅
    D) Recovery from disease

15. Which structure transports urine from kidneys to bladder?
    A) Urethra
    B) Ureter ✅
    C) Renal vein
    D) Nephron

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⚗️ Chemistry (15 MCQs)

16. Atomic number is equal to:
    A) Mass number
    B) Number of protons ✅
    C) Number of neutrons
    D) Protons + neutrons

17. Avogadro’s number is:
    A) 6.02 × 10^22
    B) 6.02 × 10^23 ✅
    C) 3.01 × 10^23
    D) 3.01 × 10^24

18. Which of the following is a strong electrolyte?
    A) Glucose
    B) Acetic acid
    C) NaCl ✅
    D) Urea

19. Which orbital has a dumbbell shape?
    A) s
    B) p ✅
    C) d
    D) f

20. PH of a neutral solution at 25°C is:
    A) 0
    B) 5
    C) 7 ✅
    D) 14

21. Which of the following is not a greenhouse gas?
    A) CO₂
    B) CH₄
    C) H₂ ✅
    D) N₂O

22. Hydrogen bonding is present in:
    A) H₂
    B) CH₄
    C) H₂O ✅
    D) CO₂

23. Number of valence electrons in carbon:
    A) 2
    B) 4 ✅
    C) 6
    D) 8

24. Which of the following compounds has a triple bond?
    A) Ethane
    B) Ethene
    C) Ethyne ✅
    D) Methane

25. Which of the following is a Lewis acid?
    

    16. A) NH₃
        B) H₂O
        C) BF₃ ✅
        D) CH₄

    17. Oxidation involves:
        A) Loss of electrons ✅
        B) Gain of electrons
        C) Loss of protons
        D) Gain of neutrons

    18. Which of the following has sp³ hybridization?
        A) CO₂
        B) CH₄ ✅
        C) C₂H₂
        D) H₂CO

    19. The rate of a reaction is increased by:
        A) Lowering temperature
        B) Increasing activation energy
        C) Using a catalyst ✅
        D) Removing reactant

    20. Which metal is liquid at room temperature?
        A) Mercury ✅
        B) Zinc
        C) Potassium
        D) Iron

    21. What is the oxidation state of oxygen in H₂O₂?
        A) -2
        B) -1 ✅
        C) 0
        D) +1

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    ⚙️ Physics (10 MCQs)

    31. Unit of force is:
        A) Watt
        B) Joule
        C) Newton ✅
        D) Pascal

    32. Speed =
        A) Distance × Time
        B) Distance / Time ✅
        C) Acceleration / Time
        D) Force × Time

    33. Acceleration due to gravity (g) on Earth is:
        A) 8.9 m/s²
        B) 9.8 m/s² ✅
        C) 10.8 m/s²
        D) 9.2 m/s²

    34. Ohm’s Law is given by:
        A) V = IR ✅
        B) V = I/R
        C) R = VI
        D) I = V + R

    35. Unit of work is:
        A) Watt
        B) Joule ✅
        C) Newton
        D) Pascal

    36. Sound cannot travel through:
        A) Solid
        B) Liquid
        C) Gas
        D) Vacuum ✅

    37. Power is defined as:
        A) Force × Displacement
        B) Work / Time ✅
        C) Mass × Velocity
        D) Energy × Time

    38. Heat transfer without medium is called:
        A) Conduction
        B) Convection
        C) Radiation ✅
        D) Evaporation

    39. Which color of light has the shortest wavelength?
        A) Red
        B) Green
        C) Blue
        D) Violet ✅

    40. 1 kilowatt =
        A) 1000 J
        B) 100 J
        C) 1000 W ✅
        D) 10 W

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    📘 English (10 MCQs)

    41. Choose the correct synonym of "benevolent":
        A) Cruel
        B) Kind ✅
        C) Rude
        D) Harsh

    42. Antonym of "abundant":
        A) Plenty
        B) Few
        C) Scarce ✅
        D) Rich

    43. He _______ to school every day.
        A) Go
        B) Goes ✅
        C) Going
        D) Gone

    44. Choose the correctly punctuated sentence:
        A) I bought apples oranges bananas.
        B) I bought apples, oranges, bananas.
        C) I bought apples, oranges, and bananas. ✅
        D) I bought, apples, oranges and bananas

    45. Meaning of the idiom "a piece of cake":
        A) Something tasty
        B) Something easy ✅
        C) Something hard
        D) Something expensive

    46. Choose the correct preposition: She is fond ____ music.
        A) in
        B) of ✅
        C) for
        D) with

    47. Choose the correct sentence:
        A) He don’t like tea.
        B) He doesn’t likes tea.
        C) He doesn’t like tea. ✅
        D) He didn’t likes tea.

    48. The plural of “analysis” is:
        A) Analysises
        B) Analysi
        C) Analyses ✅
        D) Analysis

    49. She is ______ intelligent girl.
        A) the
        B) a
        C) an ✅
        D) no article

    50. Synonym of “elated”:
        A) Sad
        B) Angry
        C) Joyful ✅
        D) Scared  

    51. HOPE YOU ALL LIKE IT!  AND BEST OF LUCK FOR YOUR TEST MAY GOD BLESS YOU ALL .I HOPE YOU ALL ACHIEVE THAT WHAT YOU WANT.......