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NCERT Solutions for Class 6 Chapter 7: Temperature and its Measurement

NCERT Solutions for Class 6 Chapter 7: Temperature and its Measurement Page 123 Question 1. Can it always be correctly judged, that a person has fever, only by touching the person? Answer: It cannot always be correctly judged that a person has fever, only by touching the person. If a person has a normal body temperature and the hand touching that person is cold, the person will feel to be warm to the hand. If the hand touching a person is warm, the person with fever may be felt as at normal temperature. For correct judgement that a person has fever or not, we must use clinical thermometer correctly. Page 128 Question 2. Do small children generally have slightly higher body temperatures as compared to adults? Answer: Yes, small children usually have slightly higher body temperatures compared to adults. This is because their bodies are working hard to grow quickly, which makes more heat. For kids, a normal body temperature is usually between 37.0°C and 37.5°C . For adults, it’s a bit...
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Solutions for Class 8 Science Curiosity

Solutions for Class 8 Science Curiosity  Chapter 1 Exploring the Investigative World of Science                    NCERT Solutions                     Important Questions Chapter 2 The Invisible Living World: Beyond Our Naked Eye                    NCERT Solutions                     Important Questions Chapter 3 Health: The Ultimate Treasure                    NCERT Solutions                     Important Questions Chapter 4 Electricity: Magnetic and Heating Effects                    NCERT Solutions                     Important Questions Chapter 5 Exploring Forces      ...
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NCERT Solutions for Class 8 Science Curiosity Chapter 8 Nature of Matter: Elements, Compounds, and Mixtures

NCERT Solutions for Class 8 Science Curiosity Chapter 8 Nature of Matter: Elements, Compounds, and Mixtures तत्व की प्रकृति तत्व, यौगिक और मिश्रण  Pages 131-132 Keep the Curiosity Alive Question 1. Consider the following reaction where two substances, A and B, combine to form a product C: A + B → C Assume that A and B cannot be broken down into simpler substances by chemical reactions. Based on this information, which of the following statements is correct? (i) A, B, and C are all compounds, and only C has a fixed composition. (ii) C is a compound, and A and B have a fixed composition. (iii) A and B are compounds, and C has a fixed composition. (iv) A and B are elements, C is a compound, and has a fixed composition.  निम्नलिखित अभिक्रिया पर विचार कीजिए जहाँ दो पदार्थ ‘अ’ और ‘ब’ संयोजित होकर एक उत्पाद ‘स’ बनाते हैैं— अ + ब  →  स मान लीजिए कि ‘अ’ और ‘ब’ को रासायनिक अभिक्रियाओं द्वारा सरल पदार्थों में नहीं तोड़़ा जा सकता है। इस जानकारी के आधार पर निम्नलिखित मेें से...
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NCERT Solutions for Class 8 Science Curiosity Chapter 7 Particulate Nature of Matter

NCERT Solutions for Class 8 Science Curiosity Chapter 7 Particulate Nature of Matter द्रव्य की कणीय प्रकृति Page 99 Question 1. Is every speck of this fine chalk powder still composed of the same substance, or has it changed into something else on breaking or grinding? क्या इस प्रकार प्राप्‍त चॉक के सूक्ष्म कण चॉक की सबसे छोटी इकाइयाँ माने जा सकते हैैं? Answer: No. Every tiny speck of chalk powder is still made of the same substance—chalk . Breaking or grinding chalk only makes it smaller; it does not change it into another substance . नहीं। चॉक के प्रत्येक सूक्ष्म कण में वही चॉक का पदार्थ होता है। चॉक को तोड़ने या पीसने से केवल उसके आकार में कमी आती है, वह किसी दूसरे पदार्थ में नहीं बदलता। इसलिए चॉक पाउडर के सूक्ष्म कण चॉक की सबसे छोटी इकाइयाँ नहीं माने जा सकते। Page 100 Question 2. Are the units of chalk obtained in this manner considered the smallest units of chalk? क्या ठोस अवस्था में इन कणों को पृथृक करने का कोई उपाय है? Answer: No. The particles of chalk obtained by gri...
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NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure

NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure स्वास्थय  एक अमूल्य निधि Page 28 NCERT Probe and Ponder Questions Question 1. How does your body respond to an infection such as the common cold? आपका शरीर सामान्य सर्दी-जुकाम जैसे संक्रमण के प्रति कैसे अनुक्रिया करता है? Answer: When germs causing the common cold enter the body, the immune system becomes active. White blood cells identify and destroy the germs. The body may develop symptoms like sneezing, coughing, fever, and a runny nose to remove the infection. Antibodies are also produced, helping the body fight the infection and recover faster. जब सामान्य सर्दी-जुकाम के रोगाणु शरीर में प्रवेश करते हैं, तो प्रतिरक्षा तंत्र सक्रिय हो जाता है। श्वेत रक्त कणिकाएँ रोगाणुओं की पहचान कर उन्हें नष्ट करती हैं। शरीर छींक, खाँसी, बुखार और नाक बहने जैसे लक्षण उत्पन्न करता है ताकि संक्रमण को बाहर निकाला जा सके। साथ ही, शरीर प्रतिरक्षी बनाता है, जो संक्रमण से लड़कर शरीर को स्वस्थ होने में सहायता ...
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