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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 6
answer is c because in the pupa stage the silk is already produced and in the larvae stage it produces silk when it is ready to go in the next stage of its life

Ans 2:

Class : Class 8
as larva produces and when it is fully produced it forms a cocoon

Ans 3:

Class : Class 8
No, the answer is 'C' only. In pupa stage the silk fiber is only obtained, but actually it is produced by larva and in question it is asked which stage produces fiber. Hence, the answer is 'C".

Ans 4:

Class : Class 7
the answer is d only in the cocoon stage they are heated in the hot water so that the reproducing caterpillar will die and it will be very easy to extract silk fiber from it.

Ans 5:

Class : Class 7
IT IS 'D' BECAUSE AT COCOON STAGE THE CATERPILLAR PRODUCES SILK FIBRES AND KNOTS AROUND IT AND COVERS HIMSELF.AFTER SOME TIME THE SILK FIBRES GETS HARDEN DUE TO THE GUMMY SUBSTANCE WHICH THE CATERPILLAR PRODUCES............IT IS CALLED "FIBROIN" WHICH IS MADE UP OF PROTEINS.ON HEATING THE COCOONS IN WATER THE SILK AGAIN BECOMES SOFT AND IS EXTRACTED FROM COCOONS........THIS PROCESS IS CALLED "REELING OF SILK"

Ans 6:

Class : Class 7
Answer should be C ,as only larvae in the life cycle of moth produce silk fibres , pupa or cocoon does NOT make silk fibres . They only undergo change in stage IN the silk fibres. They do not have the ability to produce silk fibres !

Ans 7:

Class : Class 7
it must be c . at cocoon stage silk is already produced

Ans 8:

Class : Class 7
The answer is C as at that time of a Silkworms life it will produce silk. With that silk they will make a cacoon and then they will become a Moth. While it is a Pupa it does not have the ability to make Silk hence the answer is C

Ans 9:

Class : Class 8
it is c because the silk has already started getting produces when it is larva

Ans 10:

Class : Class 7
I thought the silk is obtained from the cocoon

Ans 11:

Class : Class 7

Ans 12:

Class : Class 9
also felt d but explanation provided above makes me feel c

Ans 13:

Class : Class 7
OPTION C

Ans 14:

Class : Class 7
ans:c,you may think d,but only in larval stage it produce silk in option d it is in a cocoon stage it cannot produce silk

Ans 15:

Class : Class 7

Ans 16:

Class : Class 8
no it is c

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
C

Ans 2:

Class : Class 6
how dumb am i thought c wrote d

Ans 3:

Class : Class 6
c

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Ans 2:

Class : Class 9

Ans 3:

Class : Class 8

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4

Ans 2:

Class : Class 5

Ans 3:

Class : Class 5
B

Ans 4:

Class : Class 4

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
Answer will be A). It is because, humus is found on topsoil and not in deep layers of soil.

Ans 2:

Class : Class 4

Ans 3:

Class : Class 4

Ans 4:

Class : Class 4
c correct

Ans 5:

Class : Class 4
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Ans 6:

Class : Class 4
I don't know

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Subject :NSO    Class : Class 8

Read the given statements and select the correct option.
Statement 1 : Venus is hotter than mercury though it is far away from the Sun.
Statement 2 : Cloudy atmosphere of Venus reflects almost 75 percent of the sunlight that falls on it.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true but statement 2 is false.
D Both statements 1 and 2 are false.


if it reflects lot of sunlight how can it be the hottest planet??

Ans 1:

Class : Class 9
Hi friend. The ans is b. It is the hottest planet because of large amount of CO2 in it which causes greenhouse effect. It is true that it reflects sunlight but this is not the reason for it being hot. HOPE THIS HELPS YOU!!!

Ans 2:

Class : Class 9

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
Hii, This means that you gotta name the planet which takes more than one Earth year i.e. more than 365 days to complete one rotation on its axis...Answer is Jupiter

Ans 2:

Class : Class 8
As per solution, 243 days is longer than a year.

Ans 3:

Class : Class 9
the answer is not correct

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
It says in the second test tube that there is a colourless solution of Y SO4and granules of Y! It should be colourless solution of X SO4 and granules of Y.

Ans 2: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
B

Ans 2:

Class : Class 6
P,R,T. By closing these switches and none of the other open ones, one wire is connected to the filament no 1 of the bulb but 2 to the doorbell. This gives only sound energy.

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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