STUDY MCQ

  NCERT MCQ of Class 10 General Science Chapter 1 Chemical Reactions and Equations 1. Which of the following is a balanced chemical equation? (a) H₂ + O₂ → H₂O (b) 2H₂ + O₂ → 2H₂O (c) H₂ + 2O₂ → H₂O₂ (d) None of the above Answer: (b) 2H₂ + O₂ → 2H₂O Explanation: A balanced chemical equation has equal numbers of each type of atom on both sides. Here, the number of hydrogen and oxygen atoms is balanced. 2. What type of reaction is represented by the equation: Zn + CuSO₄ → ZnSO₄ + Cu? (a) Combination reaction (b) Decomposition reaction (c) Displacement reaction (d) Double displacement reaction Answer: (c) Displacement reaction Explanation: Zinc displaces copper from copper sulfate to form zinc sulfate and copper, making it a displacement reaction. 3. Which of the following is an example of a decomposition reaction? (a) 2Mg + O₂ → 2MgO (b) CaCO₃ → CaO + CO₂ (c) H₂ + Cl₂ → 2HCl (d) NaCl + AgNO₃ → NaNO₃ + AgCl Answer:...

  NCERT MCQs of Class 9 Social Science (CONTEMPORARY INDIA) Chapter no 4 (CLIMATE) 1. The word 'monsoon' is derived from which language? (a) Arabic (b) Greek (c) Latin (d) Sanskrit Answer: (a) Arabic Explanation: The term 'monsoon' comes from the Arabic word mausim , meaning "season," signifying the seasonal reversal of wind direction. 2. What type of climate does India have? (a) Temperate (b) Tropical monsoon (c) Mediterranean (d) Continental Answer: (b) Tropical monsoon Explanation: India’s climate is categorized as a monsoon type due to its distinct seasonal rainfall patterns and wind reversal. 3. Which factor significantly influences the climate of India? (a) Proximity to the equator (b) Latitude and altitude (c) Ocean currents (d) All of the above Answer: (d) All of the above Explanation: Latitude, altitude, and proximity to the sea, along with ocean currents, are the major climat...

  NCERT MCQs of Class 9 (Contemporary India) Chapter no 3 Drainage.  What is the term for the area drained by a single river system? (a) Water Divide (b) Drainage Basin (c) River Valley (d) Floodplain Answer: (b) Drainage Basin Explanation: A drainage basin is the area drained by a single river system, collecting water from various streams and rivers. What separates two drainage basins? (a) River Delta (b) Water Divide (c) River Confluence (d) Meander Answer: (b) Water Divide Explanation: A water divide is an elevated area like a mountain or upland that separates two drainage basins. Which of the following is a characteristic of Himalayan rivers? (a) Short and shallow courses (b) Seasonal flow (c) Perennial flow (d) Flow westwards Answer: (c) Perennial flow Explanation: Himalayan rivers are fed by rain and melting snow, ensuring a continuous water supply throughout the year. ...