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How does speciation take place?
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|
1
|
3233
|
July 16, 2018
|
|
Metabolism is a defining feature of all living organisms without exception
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|
3
|
7550
|
June 24, 2018
|
|
Calculate the volume of 1.00 mol ${{L}^{-1}}$ aqueous sodium hydroxide that is neutralised by 200 mL of 2.00 mol ${{L}^{-1}}$ aqueous hydrochloric acid arid the mass of sodium chloride produced
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2
|
4447
|
June 18, 2018
|
|
How have multi-purpose projects and large dams been the cause of many new social movements?
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|
2
|
11848
|
June 18, 2018
|
|
By what names is black soil also known as? In which regions are black soils formed and why?
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|
1
|
6362
|
May 23, 2018
|
|
How red and yellow soils are formed? Why do they look red?
|
|
1
|
9822
|
May 23, 2018
|
|
Give any four characteristics of arid soils of India
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|
1
|
16247
|
May 23, 2018
|
|
Multicellular organisms have division of labour. Explain
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|
1
|
1483
|
April 23, 2018
|
|
Explain the relative share of different sectors in national income at the time of independence
|
|
1
|
2255
|
April 15, 2018
|
|
Why does a balloon taken near a candle burst?
|
|
1
|
2314
|
March 26, 2018
|
|
Find out the coefficient of rank correlation from the following data?
|
|
2
|
2880
|
March 26, 2018
|
|
The picture in figure shows tree line along the sea coast on an island near the equator
|
|
0
|
2816
|
March 24, 2018
|
|
Explain briefly how the uneven heating between the equator and the poles generate wind currents
|
|
0
|
4327
|
March 24, 2018
|
|
Describe an activity to demonstrate that warm air is lighter than cool air
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|
0
|
6088
|
March 24, 2018
|
|
List two reasons that can cause floods
|
|
0
|
781
|
March 24, 2018
|
|
List the dangers associated with a cyclone
|
|
0
|
689
|
March 24, 2018
|
|
Write three precautions that need to be taken during a thunderstorm
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|
0
|
1379
|
March 24, 2018
|
|
Write three precautions that need to be taken in cyclone prone areas
|
|
0
|
4045
|
March 24, 2018
|
|
Which one of the following place is unlikely to be affected by a cyclone?
|
|
0
|
9039
|
March 24, 2018
|
|
What planning is required in advance to deal with the situation created by a cyclone?
|
|
0
|
10945
|
March 24, 2018
|
|
How will you help your neighbours in case cyclone approaches your village/town?
|
|
0
|
7740
|
March 24, 2018
|
|
Explain why holes are made in hanging banners and hoardings
|
|
0
|
5228
|
March 24, 2018
|
|
You want to buy a house. Would you like to buy a house having windows but no ventilators? Explain your answer
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|
0
|
4569
|
March 24, 2018
|
|
State two experiences that made you think that air exerts pressure other than those given in the text)
|
|
0
|
12381
|
March 24, 2018
|
|
Suggest two methods to find out wind direction at a given place
|
|
0
|
1935
|
March 24, 2018
|
|
Suggest some precautions to be taken to prevent the roof of a tin sheet from flying away during a fierce wind storm
|
|
0
|
3253
|
March 24, 2018
|
|
When strong/high speed wind blows, an umbrella held upright at times gets upturned
|
|
0
|
4134
|
March 24, 2018
|
|
Paheli kept an empty bottle made of plastic inside a refrigerator
|
|
0
|
3641
|
March 24, 2018
|
|
Explain how soil pollution and soil erosion could be prevented
|
|
0
|
7246
|
March 24, 2018
|
|
List the differences between clayey soil and sandy soil
|
|
0
|
7499
|
March 24, 2018
|