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Subject :NSO    Class : Class 6

Read the following passage carefully.
P helps to maintain strong eyesight and healthy skin. Q is required for normal growth of bones and teeth in children. R is essential for proper functioning of muscles and nerves. S is needed for natural clotting of blood.
Identify P, Q, R and S and select the incorrect statement regarding these.

A Q is produced when the skin is exposed to sunlight.
B R is a mineral, deficiency of which causes spasms, poor digestion, anxiety and sleeplessness.
C Cod liver oil is a good source of both P and S.
D S is synthesised in our body by bacteria present in the gut.


Ans 1:

Class : Class 7

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6
what is gut??????

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
Melamine resits fire and firefighers also wear their suits made up of melamine.

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
(A) > 12u*60+1u*22=742u i. e. 742* mass of 1u (1.6605x10 to the power - 24) = answer A (approximate value)

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 10
assuming everything at STP H2O+CO is 250liters total mile of mixture =250/22.4 =11.16mole bothCbothCO AND H2 have same numbenumber of mole so.indvidual no of mole=11.16/2=5.58 H2+co+O2=H2O+CO2 BY stechiometry no of moles of H2O gas is also5.58. vol of H2O is 5.58×22.4 approximately 125liter

Ans 2:

Class : Class 5
how to solve

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 5
3/4th

Ans 2:

Class : Class 6
It will A because earth got 75% of water and it is 3/4 of it.

Ans 3:

Class : Class 6
It will A because earth got 75% of water and it is 3/4 of it.

Ans 4:

Class : Class 5
answer is 3 /4th

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
B because in the first statement,if the grass population will decrease,rabbit population will also decrease as the rabbit exclusively feeds on the grass population and wolf exclusively feeds on the rabbit population.In the second statement,if the tiger population will increase,the rabbit population will decrease as the tiger exclusively feeds on the rabbit population and wolf exclusively feeds on the rabbit population.In the third statement,if the deer population will decrease,the wolf population will decrease as wolf feeds on the deer population.In the fourth statement,if the rabbit population will increase,the wolf population will also increase as wolf feeds on the rabbit population.

Ans 2:

Class : Class 5
b

Ans 3:

Class : Class 4
b

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
d

Ans 2:

Class : Class 5
Option A says involuntary muscles are controlled by brain. It is correct as medulla controls all our involuntary actions. Option B and C are correct as the cardiac muscles are also called as smooth muscles, so statement d is incorrect as the muscles present in our arms and legs are called skeletal or voluntary muscles

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