The airplane fuel incident illustrates that mixing units like pounds and kilograms causes dangerous errors. Using standard SI units everywhere avoids these hazardous, unnecessary conversions, ensuring accuracy and safety in all technical operations.
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CBSE released Class 9 Science syllabus for 2026–27 has changed under NEP 2020. NCERT introduced “Exploration”, a new 13-chapter textbook replacing the old book, focusing on inquiry-based learning, real-life application and scientific thinking.
“A revolution that shook the foundations of monarchy, the French Revolution introduced new ideals of freedom and democracy CBSE 2024-2025 NCERT Social Science Class 9th Chapter 1 The French Revolution MCQ Question helps students explore its causes key events and ...
The correct answer is:(c) Intercropping Intercropping is the practice of growing two or more crops simultaneously on the same field in a definite pattern (e.g., in alternate rows or strips). It helps in better resource utilization, pest control, and soil ...
The correct answer is:(d) (i) and (iii) Manure improves the water-holding capacity of sandy soil by increasing its organic matter. Manure is rich in organic matter but contains small amounts of nutrients compared to chemical fertilizers. Class 9th Science NCERT ...