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Subject :NSO    Class : Class 5

Read the given statements and select the correct option.
Statement 1: Naphthalene balls kept in woollen clothes reduce in size after sometime.
Statement 2: Solid naphthalene balls change into gas due to the warmth of woollen clothes.

ABoth statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
CStatement 1 is correct but statement 2 is incorrect.
DBoth statements 1 and 2 are incorrect.


can somebody explain ,,how warmth comes from stored woollens

Ans 1:

Class : Class 6
Option (a)

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
sand does not absorb water and allows water to pass through it .similarly water in 2nd container absorbs water more than 3rd container . same happens in1st and 3rdcontainers

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
b

Ans 2:

Class : Class 7
B

Ans 3:

Class : Class 7
i think the answer is B because they are asking above water adaptations

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Subject :NSO    Class : Class 5

Fruit M and fruit N are both dry. Fruit M is light and has a papery skin. Fruit N is long and has a slit along its side. How are the seeds of the fruits M and N dispersed?

AM: By wind; N: By animals
BM: By wind; N: By splitting
CM: By splitting; N: By wind
DM: By water; N: By animals


(B) Light weight and papery skin of a fruit are adaptations to float in air from a long time. The seeds along with the fruit get dispersed to long distances by floating in air. Fruit N has a slit along its side. It indicates that the seeds are dispersed by splitting of the fruit along the slit when matured. There is a line where splitting occurs after maturation, exposing the seeds which will fall from the fruit.

Ans 1:

Class :
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Ans 2:

Class : Class 5
B

Ans 3:

Class :
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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
both a and c

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Subject :NSO    Class : Class 4

Read the given flow chart showing energy conversion and identify P - S.



             P ------------- Q ------------- R ------------- S
ACar ----- Solar cooker ---- Windmill ----- Walking
BFan ----- Mango tree ----- Car ----- Sleeping
CMicrowave ----- Radio ----- Climbing ----- Reading
DBulb ----- Grass ----- Hydroelectricity ----- Running


How in case of fan electrical energy is converted to light and in case of sleeping chemical energy is converted to kinetic

Ans 1:

Class : Class 4
d

Ans 2:

Class : Class 5
the correct answer is d

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Subject :NSO    Class : Class 5

Read the given paragraph. The American spacecraft Apollo - 7 carrying three passengers viz. Neil Armstrong, Edwin Aldrin and Yuri Gagarin landed on Moon on 21st July, 1979. This was a remarkable day in the history of mankind. They left a flag of NASA there which was specially designed to stay taut on the Moon, where there is no air. There are some errors in the given paragraph. Select the option that correctly identifies their number.

A2
B3
C4
D5


what are the 5 errors in the paragraph

Ans 1:

Class : Class 3

Ans 2:

Class : Class 5
A

Ans 3:

Class : Class 8
1) Apollo - 7 2) Yuri Gagarin 3) 21 st July,1979 4) Flag of NASA 5) stay taut on the moon .

Ans 4:

Class : Class 7

Ans 5:

Class : Class 7
what do they want to check?

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
I think answer is A because if the no of predator increases in a food chain then the no of prey is decreased

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