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Class 10 Science (Chemistry) Chapter-3 Metals and Non-Metals | IMPORTANT QUESTIONS

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2 MARKs QUESTIONS Q1. Why do ionic compounds have high melting and boiling points? Approach: Think about strong electrostatic forces and their effect on energy requirement. Answer: Ionic compounds contain strong electrostatic attraction between oppositely charged ions. A large amount of heat energy is required to break these bonds, causing high melting and […]

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CLASS 10 Science (Biology) Chapter-7 How do Organisms Reproduce | IMPORTANT Case Study Questions

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Let’s Revise the Topics Covered under this Chapter ( How do Organism Reproduce): [For detailed Understanding, visit our NOTES by CLICK HERE ] 1. INTRODUCTION– Reproduction 2. TYPES OF REPRODUCTION 3. METHODS OF ASEXUAL REPRODUCTION 4. SEXUAL REPRODUCTION 5. SEXUAL REPRODUCTION IN PLANTS 6. SEXUAL REPRODUCTION IN HUMAN BEING 7. REPRODUCTIVE HEALTH 8. FEMALE

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CLASS 10 Science (Biology) Chapter-7 How do Organism Reproduce | Important Questions

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Class 10 Science (Chemistry) Ch-2 Acid, Bases, and Salt | CASE STUDY IMPORTANT QUESTIONS

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Case Study Questions CASE STUDY 1 – Reaction of Metals with Acids When zinc granules are added to dilute hydrochloric acid in a test tube, effervescence occurs due to the formation of a gas. The gas burns with a pop sound. The reaction is exothermic, and zinc chloride is formed as a by-product.

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Class 10 Science (Chemistry) Ch-2 Acid, Bases, and Salt | IMPORTANT QUESTIONS

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2 Marks Questions Q1. What happens when an acid reacts with a metal carbonate? Write a balanced chemical equation. Approach: Recall gas evolved when acid reacts with carbonate. Answer: Acid + Metal Carbonate → Salt + Water + Carbon dioxide Example: ——————————————————————————————————- Q2. Define pH. What is the pH of pure water at 25°C?

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