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. […]
Class 10 Science (Chemistry) Ch-2 Acid, Bases, and Salt | CASE STUDY IMPORTANT QUESTIONS Read More »
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?
Class 10 Science (Chemistry) Ch-2 Acid, Bases, and Salt | IMPORTANT QUESTIONS Read More »
CASE STUDY (Experimental Based – 5 MARKS) Questions Case Study 1: During a laboratory demonstration, a teacher heated lead nitrate crystals in a test tube. Brown fumes evolved, a yellow solid remained, and the gas turned moist litmus paper acidic. Answer the following: Q1. Identify the type of reaction. Answer: Thermal decomposition reaction. Q2.
CLASS 10 Science (Chemistry) Ch-1 Chemical Reactions and Equation | Case Study Questions Read More »
2 MARKS QUESTIONS Q1. Why does the colour of copper sulphate solution change when an iron nail is dipped into it? Write the balanced chemical equation for this reaction. Approach: → Think about displacement based on reactivity series — which metal replaces which? Answer: Iron is more reactive than copper. Hence, it displaces copper
CLASS 10 Science (Chemistry) Ch-1 Chemical Reaction and Equation | Important Questions Read More »
Let’s Revise the Topics Covered under this Chapter (Globalization and Indian Economy): [For detailed Understanding, visit our NOTES by CLICK HERE] 1. INTRO- GLOBALIZATION 2. MULTINATIONAL CORPORATIONS (MNCs) 3. IMPACT OF GLOBALIZATION 4. FACTORS THAT ENABLED GLOBALIZATION 5. NEW ECONOMIC POLICY 1991 Test your understanding with these important questions designed for Class 10 Economics
