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neet 2020 prep

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NEET 2020 Biology MCQs (Q46–135) Q46. Which of the following is correct regarding enzyme action? A) Enzymes are consumed B) Enzymes increase activation energy C) Enzymes lower activation energy D) Enzymes stop reactions Show Answer Answer: C Explanation: Enzymes act as catalysts and lower activation energy, speeding up reactions. Q47. Which hormone regulates blood sugar? A) Thyroxine B) Insulin C) Adrenaline D) Estrogen Show Answer Answer: B Explanation: Insulin controls glucose levels by promoting uptake into cells. Q48. Functional unit of kidney is: A) Neuron B) Nephron C) Alveoli D) Villi Show Answer Answer: B Explanation: Nephron filters blood and forms urine. Q49. Photosynthesis occurs in: A) Mitochondria B) Chloroplast C) Nucleus D) Ribosome Show Answer Answer: B Explanation: Chloroplast contains chlorophyll and performs photosynthesis. Q50. Genetic material is: A) Protein B) Lipid C) DNA D) Carbohydrate...
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neet

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NEET Biology Dashboard Living World Biological Classification Plant Kingdom Animal Kingdom Morphology Anatomy Cell Unit Biomolecules Cell Cycle Photosynthesis Respiration Plant Growth Digestion Breathing Circulation Excretion Neural Control Hormones Reproduction Genetics Evolution Human Health Biotechnology Ecology 🎲 Random ⬅ Back to Dashboard
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Neet prep 2025

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NEET 2024 Physics MCQs (With Answers & Explanations) Q1. A particle has displacement x = t³ - 3t² + 2t. Acceleration at t = 2s is: A) 0 B) 2 C) 6 D) 12 Show Answer Answer: C) 6 Explanation: Velocity = dx/dt = 3t² - 6t + 2 Acceleration = d²x/dt² = 6t - 6 At t=2 → a = 12 - 6 = 6 m/s² Q2. Dimensional formula of Planck’s constant: A) ML²T⁻¹ B) ML²T⁻² C) MLT⁻¹ D) ML²T⁻³ Show Answer Answer: A) ML²T⁻¹ Explanation: h = Energy × time → (ML²T⁻² × T) = ML²T⁻¹ Q3. Kinetic energy (m=2 kg, v=5 m/s): A) 10 J B) 25 J C) 50 J D) 100 J Show Answer Answer: C) 50 J Explanation: KE = ½mv² = ½ × 2 × 25 = 50 J Q4. If force is doubled and mass halved, acceleration becomes: A) Same B) Double C) Four times D) Half Show Answer Answer: C) Four times Explanation: a = F/m → (2F)/(m/2) = 4F/m → 4a Q5. Work done on equipotential surface: A) Maximum B) Minimum C) Zero D) Infinite Show Answer Answer: C) Zero Explanation: Potential difference = 0 → ...
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