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🎯 Exam Preparation Kit
વિજ્ઞાન પરીક્ષા તૈયારી
Gujarati 17 leveled MCQs Free
Shared by a Veda learner · Generated with Veda AI
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Sample questions with model answers
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5 marks Long answer
Explain the following chemical reactions with balanced chemical equations for each: (1) Zinc + Silver nitrate → Zinc nitrate + Silver (2) Barium chloride + Potassium sulfate → Barium sulfate + Potassium chloride (3) Hydrogen + Nitrogen → Ammonia.
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1) Zn + 2AgNO3 → Zn(NO3)2 + 2Ag; 2) BaCl2 + K2SO4 → BaSO4 + 2KCl; 3) 3H2 + N2 → 2NH3.
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5 marks Long answer
Explain phototropism, geotropism, and chemotropism in plants.
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Phototropism is growth towards light; Geotropism is growth towards gravity; Chemotropism is growth towards chemicals.
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5 marks Long answer
Explain the human excretory system by drawing a diagram.
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The human excretory system includes kidneys, ureters, bladder, and urethra.
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5 marks Long answer
What is the type of reproduction? Give an example and explain.
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Asexual reproduction; example: binary fission in amoeba.
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5 marks Long answer
What is reflection of light? Write the laws of reflection of light.
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Reflection of light is the bouncing back of light; Laws: 1) Angle of incidence = Angle of reflection; 2) Incident ray, reflected ray, and normal lie in the same plane.
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3 marks Medium answer
What is the role of the cerebellum in our body?
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The cerebellum coordinates voluntary movements and maintains balance.
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3 marks Medium answer
What is meant by 'power of accommodation' of the eye? Which lens is used to correct hypermetropia?
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Power of accommodation is the eye's ability to focus on near and far objects; convex lens corrects hypermetropia.
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3 marks Medium answer
Why are two identical wires not connected in series?
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Two identical wires in series would not provide any resistance change, leading to potential overheating.
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3 marks Medium answer
How do our bodies maintain blood sugar levels? Explain.
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The body maintains blood sugar levels through insulin and glucagon regulation.
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3 marks Medium answer
Classify the natural ecosystems and artificial ecosystems given below: Mangrove, desert, pond, aquarium.
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Natural ecosystems: Mangrove, desert, pond; Artificial ecosystems: Aquarium.
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3 marks Medium answer
Give two types of variations: continuous and discontinuous.
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Continuous variation includes height; Discontinuous variation includes blood type.
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3 marks Medium answer
Name the metal and non-metal from the following: (1) Metal, name it. (2) Non-metal, name it. (3) What kind of ionic compound is formed by X and Y?
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Metal: Sodium; Non-metal: Chlorine; Ionic compound: Sodium chloride.
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3 marks Medium answer
What is meant by the reactivity series of metals? Arrange the following metals in decreasing order of their reactivity: Sodium, Calcium, Potassium, Copper, Aluminum, Lead, Zinc, Magnesium.
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Reactivity series ranks metals by reactivity: Potassium, Sodium, Calcium, Magnesium, Aluminum, Zinc, Lead, Copper.
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1 marks Short answer
Match the pairs: 1. Adrenaline
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Adrenaline prepares for emergency situations.
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1 marks Short answer
Match the pairs: 2. Estrogen
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Estrogen is a sexual hormone.
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1 marks Short answer
Match the pairs: 23. Producers
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Producers are at the primary trophic level.
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1 marks Short answer
Match the pairs: 24. Herbivores
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Herbivores are at the secondary trophic level.
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