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Continue to ChatNCERT Solutions for Class 9 Science in Hindi Medium Chapter 13 हम बीमार क्यों होते हैं प्रश्न और उत्तर https://ncertsolutionsforclass9.in/hum-bimar-kyu-hote-hai-questions-and-answers-ncert-solutions-for-class-9-science-in-hindi-medium/