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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
The correct option is answer c Containers 1,2,4

Ans 2:

Class : Class 7
It should be 1 and four, the option of which is not given.

Ans 3:

Class : Class 7
Magnetic separation can only be used in the cases in which one constituent is magnetic and the other is not. In case one Copper is not magnetic and iron is. In the second case Aluminium is not magnetic and Steel is. nIn the third case both the objects gold and the glass marble are non magnetic objects and hence magnetic separation cannot be used in this case. In the last case both Nickel as well as Steel are magnetic and thus magnetic separation cannot be used. So, magnetic separation can only be used in case 1 and case. Hence the answer is A

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
The correct answer is A.

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 7

Prashant observed flowers of two different plants X and Y. Flowers of X are large, coloured, showy and produce nectar while flowers of Y are small, dull without nectar. Pollen grains of X are sticky and bigger while pollen grains of Y are small in size and dry.
Which of the following is correct regarding X and Y?

A X could be pollinated by insect whereas Y could be pollinated by wind.
B X could be pollinated by wind whereas Y could be pollinated by water.
C X could be pollinated by wind whereas Y could be pollinated by insect.
D X could be pollinated by water whereas Y could be pollinated by insect.


In question it is stated that Flower X has nectar.Therefore, it would be A.

Ans 1:

Class : Class 7

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Subject :NSO    Class : Class 4

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