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Subject :NSO    Class : Class 8

Refer to the given figures, P and Q.

How do reproductive cells produced in P differ from those produced in Q in terms of production and their modes of storage?

A Mature cells of P can get stored for longer periods in reproductive tract whereas in Q, only immature cells remain stored.
B P produces fewer reproductive cells than Q does.
C Reproductive cells produced by P do not show motility.
D Q produces reproductive cells for a longer period in an individual’s life span than P does.


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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
(D)

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
c

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Subject :NSO    Class : Class 5

A housewife was preparing hot meal for her family. She accidentally placed her fingertip into some boiling soup, but quickly withdrew it. She felt significant pain in the finger immediately after that. Which of the following is the most likely explanation for this time lag?

A The withdrawal of her finger is a reflex action that is triggered more quickly than the transmission of information related to pain stimulus to her brain.
B The pain receptors present on her finger skin are less efficient, so information regarding pain is transmitted to brain at a slower rate as compared to that of heat.
C The withdrawal of her finger is controlled by brain so it occurs very fast whereas feeling of pain is a reflex action controlled by spinal cord so it takes comparatively much more time.
D None of these


Ans 1:

Class : Class 5
A is the correct answer

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 7

Which of the following statement(s) is/are incorrect?
(i) Two thin woollen sweaters are warmer than a thick woollen sweater.
(ii) It saves fuel if we cook food in a vessel which is blackened at the bottom and polished from the sides.
(iii) The cable wires between two poles are left loose because in summers, the wires do not break on expanding.

A Only (i) and (iii)
B Only (ii) and (iii)
C Only (iii)
D Only (i)


How will leaving it loose relate to expansion in summers? Summer should be replaced with winters and expanding we replaced with contracting..

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1

B

Both weaving and knitting can be done by hand as well as by machines.Weaving is done for all types of fibres, not just silk. Knitting is mainly done for wool, but it is also done for cotton, silk, nylon, etc. and not just for wool.


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Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1

D

Whatever be the colour of an object, the colour of the shadow cast by the object is always black. Therefore, the colour of an object cannot be identified by its shadow.


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