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Explain the function of the following parts of an electric motor. (i) Armature
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1
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3255
|
April 5, 2019
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1. Mention any two components of blood
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1
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3289
|
April 5, 2019
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(a) Write the steps involved in the extraction of pure metals
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1
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12465
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April 5, 2019
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What is a dam? Why do we seek to build large dams?
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1
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1448
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April 5, 2019
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1. Suggest two measures to manage the garbage we produce
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1
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5528
|
April 5, 2019
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1. List the factors on which the resistance of a conductor in the shape of a wire depends
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1
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12104
|
April 5, 2019
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Show how could you join three resistors, each of resistance 9 Ω
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1
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851
|
April 5, 2019
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A student uses a lens of focal length 40 cm and another of -20 cm
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1
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3258
|
April 5, 2019
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(a) Why are most carbon compounds poor conductors of electricity?
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1
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781
|
April 5, 2019
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2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube
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1
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1503
|
April 5, 2019
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If the image formed by a spherical mirror for all positions of the object placed in front
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1
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420
|
April 5, 2019
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A compound 'X' on heating with excess cons, sulphuric acid at 443K gives an unsaturated compound T
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1
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1058
|
April 5, 2019
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A Mendelian experiment consisted of breeding pea plants bearing violet flowers
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1
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689
|
April 5, 2019
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“Reuse is better than recycling of materials”. Give reason to justify this staten
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1
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620
|
April 5, 2019
|
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Why is sustainable management of natural resources necessary?
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1
|
517
|
April 5, 2019
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(a) In your opinion is burning plastic an ecofriendly method of waste disposal? Why?
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1
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2365
|
April 5, 2019
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Can do something to reduce our personal consumption of various natural resources
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1
|
476
|
April 5, 2019
|
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State two advantages of conserving (a) forest, and (b) wild life
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1
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481
|
April 5, 2019
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List four causes of damage to forests
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1
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855
|
April 5, 2019
|
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Forests are “biodiversity hot spots’. Justify this statement
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1
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1400
|
April 5, 2019
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“What was chipko Andolan”?
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1
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9935
|
April 5, 2019
|
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Explain by giving example where active involement of local people lead to efficient management of forest
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1
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909
|
April 5, 2019
|
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List four advantages of properly managed watershed management
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1
|
1042
|
April 5, 2019
|
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List four advantages of conserving water in the form of ground water
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1
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1146
|
April 5, 2019
|
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What is meant by tree types of ‘R’ (3-R’s) to save the environment?
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1
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687
|
April 5, 2019
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What is biodiversity? What will happens if biodiversity of an area is not preserved? Mention one effect of it
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1
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601
|
April 5, 2019
|
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List two main causes of the pollution of water of the river Ganga
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1
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1720
|
April 5, 2019
|
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Everyone of us can do something to reduce our personal consumption of various natural resources
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1
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531
|
April 5, 2019
|
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(a) Why do we need to manage our resources carefully?
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1
|
548
|
April 5, 2019
|
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Why is sustainable managment of natural resources necessary?
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1
|
489
|
April 4, 2019
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