?
Why
the mountaineers care
carry Oxygen
Answers
Explanation:
- Check the new CBSE syllabus for Class 10 Science subject which has been published by the board after making a reduction in the contents of course. Board has reduced the syllabus by one-third to compensate for the loss of studies that occurred during the COVID-19 lockdown. This syllabus is an important tool for effective learning in the remaining part of the current academic session. It is also helpful to create the right preparation structure for all the internal examinations and the annual board examination. CBSE Class 10 Science syllabus provides details of the course structure along with topics prescribed for the academic session 2020-2021.
- Main contents of the CBSE Class 10 Science syllabus 2020-21 are:
Unit-wise weightage
Topics and sub-topics to be prepared form each unit
List of experiments to be performed for practical work
Question paper design for the annual board examination
Components of Internal Assessment
Prescribed books
Important* CBSE Class 10 Complete Guide for Preparations of Board Exam 2021
Students should make preparations according to the details and contents mentioned in the CBSE syllabus.
Find below the complete syllabus for CBSE Class 10 Science:
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CBSE Class 10 Science Unitwise Weightage
Unit
Title
Weightage
1
Chemical Substances-Nature and Behaviour
26
2
World of Living
23
3
Natural Phenomena
12
4
Effects of Current
14
5
Natural Resources
05
Total Marks
80
Internal Assessment
20
Grand Total
100
Also Check: CBSE Class 10 Science Deleted Syllabus - Topics Removed from Previous Syllabus
Answer:
because on high altitude lack of oxygen
Explanation:
Mountaineers carry an oxygen cylinder along with them. It is because when they climlmountains, as altitude increases, the amount of oxygen level in the atmospheric air decreases as trees are not found at higher altitudes. As a result, mountaineers suffer from dizziness.