1. Suggest two measures to manage the garbage we produce
|
|
1
|
5547
|
April 5, 2019
|
1. List the factors on which the resistance of a conductor in the shape of a wire depends
|
|
1
|
12127
|
April 5, 2019
|
Show how could you join three resistors, each of resistance 9 Ω
|
|
1
|
873
|
April 5, 2019
|
A student uses a lens of focal length 40 cm and another of -20 cm
|
|
1
|
3285
|
April 5, 2019
|
(a) Why are most carbon compounds poor conductors of electricity?
|
|
1
|
793
|
April 5, 2019
|
2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube
|
|
1
|
1517
|
April 5, 2019
|
If the image formed by a spherical mirror for all positions of the object placed in front
|
|
1
|
427
|
April 5, 2019
|
A compound 'X' on heating with excess cons, sulphuric acid at 443K gives an unsaturated compound T
|
|
1
|
1091
|
April 5, 2019
|
A Mendelian experiment consisted of breeding pea plants bearing violet flowers
|
|
1
|
700
|
April 5, 2019
|
“Reuse is better than recycling of materials”. Give reason to justify this staten
|
|
1
|
634
|
April 5, 2019
|
Why is sustainable management of natural resources necessary?
|
|
1
|
530
|
April 5, 2019
|
(a) In your opinion is burning plastic an ecofriendly method of waste disposal? Why?
|
|
1
|
2387
|
April 5, 2019
|
Can do something to reduce our personal consumption of various natural resources
|
|
1
|
487
|
April 5, 2019
|
State two advantages of conserving (a) forest, and (b) wild life
|
|
1
|
496
|
April 5, 2019
|
List four causes of damage to forests
|
|
1
|
864
|
April 5, 2019
|
Forests are “biodiversity hot spots’. Justify this statement
|
|
1
|
1410
|
April 5, 2019
|
“What was chipko Andolan”?
|
|
1
|
9966
|
April 5, 2019
|
Explain by giving example where active involement of local people lead to efficient management of forest
|
|
1
|
918
|
April 5, 2019
|
List four advantages of properly managed watershed management
|
|
1
|
1059
|
April 5, 2019
|
List four advantages of conserving water in the form of ground water
|
|
1
|
1161
|
April 5, 2019
|
What is meant by tree types of ‘R’ (3-R’s) to save the environment?
|
|
1
|
704
|
April 5, 2019
|
What is biodiversity? What will happens if biodiversity of an area is not preserved? Mention one effect of it
|
|
1
|
615
|
April 5, 2019
|
List two main causes of the pollution of water of the river Ganga
|
|
1
|
1724
|
April 5, 2019
|
Everyone of us can do something to reduce our personal consumption of various natural resources
|
|
1
|
540
|
April 5, 2019
|
(a) Why do we need to manage our resources carefully?
|
|
1
|
575
|
April 5, 2019
|
Why is sustainable managment of natural resources necessary?
|
|
1
|
496
|
April 4, 2019
|
What is watershed managment system? List two benefits drived by the communities that participate in this system
|
|
1
|
631
|
April 4, 2019
|
What is meant by biodiversity? List two advantages of conserving forest and wild life
|
|
1
|
5433
|
April 4, 2019
|
List three problems which arise due to construction of big dams. Suggest a solution for these problems
|
|
1
|
6563
|
April 4, 2019
|
“Burning fossil fuels is a cause of global warming.” Justify this statement
|
|
1
|
884
|
April 4, 2019
|