10th CBSE Science Pre Board Exam 2020-21 School Name: Himalaya Public School, Sector 13, Rohini, Delhi 110085 India Time: 3 hours Maximum Marks: 80 Class: 10th Date: 18 / 01 / 2021 Subject: Science General Instructions: 10th CBSE Science Pre Board Exam 2020-21 The question paper comprises four sections A, B, C and D. There are 36 questions …
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CBSE 9th Topics Removed for 2020-21: CBSE syllabus for all subjects of class 9 has been reduced for the academic session 2020-2021. Check here the deleted portion of the syllabus of all major subjects of class 9. This deleted portion will not be included in the internal assessments and the …
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CBSE 10th Topics Removed for 2020-21: The Central Board of Secondary recently released the revised syllabus for all subjects of class 10. Board has deleted some portion of the syllabus for the ease of students who will be taking their CBSE Board Exam next year. Due to COVID-19, almost the …
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Wastewater Story 7th Class NCERT CBSE Science Chapter 18 Question: Wastewater is fit for human consumption or not. Give reason to support your answer. Answer: No, because it is dirty and has many diseases causing organisms like cholera, typhoid etc. Question: Name two chemicals used to disinfect wastewater. Answer: Chlorine and ozone …
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Forests: Our Lifeline 7th Class NCERT CBSE Science Chapter 17 Question: List some animals which live in deeper areas of the forest. Answer: Boars, bison, jackals, porcupines, elephants, etc., live in the deeper areas of the forest. Question: Paheli while moving in a forest observed that there was no noise pollution, though …
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Water: A Precious Resource 7th Class NCERT CBSE Science Chapter 16 Question: Suggest one traditional way of storing water from ancient time. Answer: In ancient times, people used to make Bawris to store water. Question: What is the source of water in each of the following? Wells Ground Atmosphere Answer: The source …
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Light 7th Class NCERT CBSE Science Chapter 15 Question: Briefly mention whether mirror change the direction of light. Answer: Yes, when a ray of light is incident on the mirror surface, then the mirror changes the direction of light. Question: The image formed by a lens is always virtual, erect and smaller …
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Electric Current and its Effects 7th Class NCERT CBSE Science Chapter 14 Question: Mention the name of the two devices that work on the basis of magnetic effects of current. Answer: The devices that work on the basis of magnetic effects of current are loudspeaker and electric bell. Electric Current and its …
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