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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Answer: The answer could be option B. Explanation: Assume the solar system as a circle, the sun as the radius( center) and the planets' orbits as the circumference( circle boundary). Mercury, with the least circumference length, revolves less distance than any other planet. This also means that it will take the least time to revolve around the Sun( 88 Earth Days ). Neptune, being the farthest of all planets, revolves more distance compared to others. Neptune takes the highest time to revolve( 165 Earth Years).[ Viewing the solar system Diagram would help.] Therefore, less the distance from the Sun, less the time taken to revolve; more the distance from the Sun, more the time taken to revolve.

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Subject :NSO    Class : Class 3

When astronauts are out in the space, either they communicate using radios or talk to one another by touching their helmets. Which of the following statements holds true about communication in space?
1.Sound is a vibration that cannot travel through vacuum.
2.Sound vibrations can travel through the material of the helmet to the other.
3.Radiowaves can travel through vacuum.
4.Helmets have speakers built in them which produce sounds when touched.

A4 only
B2 and 3
C1, 2 and 3
D1 and 4


Ans 1:

Class : Class 4
i am confused

Ans 2:

Class : Class 1
C

Ans 3:

Class : Class 4
D

Ans 4:

Class : Class 3
A

Ans 5:

Class : Class 4
ANS A is correct

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 5

Nidhi pushed the plunger of syringe completely and dipped its needle in water. Then she slowly pulled the plunger while its needle was still immersed in water. Select the correct option regarding this.

A Water will move in the syringe when she pushed the plunger down due to air pressure.
B When she pushed the plunger down all the air moved out creating an empty space in syringe.
C Air outside the syringe exerted pressure on water causing it to move in when the plunger is pulled up.
D Both (B) and (C)


YEA IT IS C

Ans 1:

Class : Class 4
well I have no idea if the answer D is correct or not but i think that answer C is not correct as how can you say that the syringe which is inside water will get the force of air

Ans 2:

Class : Class 4
C is the answer to this question

Ans 3:

Class : Class 5

Ans 4:

Class : Class 5
D is the correct answer

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
HERE CORRECT ANSWER IS GIVEN AS B THAT IS 0.58

Ans 2:

Class : Class 8
answer should be 0.48

Ans 3:

Class : Class 7

Ans 4:

Class : Class 8

Ans 5:

Class : Class 8
how is this 2.17,can you explain,we got 0.48

Ans 6:

Class : Class 7
I think 0.75, though not in options

Ans 7:

Class : Class 7
can some one pls explain

Ans 8:

Class : Class 7
how come, Some one pls explain

Ans 9:

Class : Class 8
2.17 is the answer

Ans 10:

Class : Class 5
I didn't understand the questionPlease explain🙏🙏🙏

Ans 11:

Class : Class 7
shouldn't the answer be 0.75 m per sec??

Ans 12:

Class : Class 7
2.17

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
a

Ans 2:

Class : Class 5

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Subject :NSO    Class : Class 5

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