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Mrs Punita from Ramjas school R.K.Puram, New Delhi
Subject :NSO    Class : Class 7

Ans 1:

Sanjaykumar S from Velammal, chennai
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 2:

Shlok from Tomoae , Amravati
Class : Class 7
it must be c . at cocoon stage silk is already produced

Ans 3:

Arushi from Indira National School, Pune
Class : Class 9
also felt d but explanation provided above makes me feel c

Ans 4:

Yashna Badiye from sagar public school saket nagar, Bhopal
Class : Class 8
as larva produces and when it is fully produced it forms a cocoon

Ans 5:

Parth Gupta from Presidium Gurgaon, Gurgaon
Class : Class 8
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 6:

Aviral Yadu from Krishna Public School Dunda Raipur, Raipur
Class : Class 9
Ans C

Ans 7:

Ashwak from Cambridge, Jalandhar
Class : Class 9
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 8:

Yashna Badiye from sagar public school saket nagar, Bhopal
Class : Class 8
no it is c

Ans 9:

Krishna Patidar from Advanced Academy, Indore
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 10:

Ryan Ganguly from Ebenezer International School, Bangalore
Class : Class 8
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 11:

Hritvi from Podar International School, Mumbai
Class : Class 7
OPTION C

Ans 12:

D VISHNU from NARAYANA SCHOOL, CHENNAI
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 13:

Aayush Reddy Bomidika from Delhi Public School Nacharam, Hyderabad
Class : Class 9

Ans 14:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI
Class : Class 8
This is a trick question.. It says 'produced', not 'obtained'.. The larvae produce the silk fibre, then it is obtained from cocoon..

Ans 15:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
really confusing ... the answer option d is correct in the sense that produces means extracting the silk or when it is ready to extracted by humans. but option c is correct when produces means that when larva , itself after the fourth moult stage produces silk.

Ans 16:

Shayan Bari from Kendriya Vidyalaya, Katihar
Class : Class 7
I thought the silk is obtained from the cocoon

Ans 17:

Ronav Kerkar from Jamnabai Narsee School, Mumbai
Class : Class 7
admin please answer

Ans 18:

Mradul from Modern public school bhiwadi, Bhiwadi
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 19:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
I THINK THE ANSWER IS C

Ans 20:

Bhumi Chheda from SVKM J V Parekh International School, Mumbai
Class : Class 9
it is c because the silk has already started getting produces when it is larva

Ans 21:

reechik ghosh from dps, farakka
Class : Class 7

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Ishan Sinha from Navrachana School Sama, Vadodara Gujarat
Subject :NSO    Class : Class 6

Ans 1:

Rohan TR from Sri Aurobindo memorial school, Bangalore
Class : Class 6
@Aditya Kumble Same

Ans 2:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
C

Ans 3:

Adithya Kumble from Deens Academy, Bangalore
Class : Class 7
how dumb am i thought c wrote d

Ans 4:

Pratyush Pranjal Rai from GRM, Bareilly
Class : Class 7
CEZY PZY LEMONS SQUEEZY PIZA CHEEZY

Ans 5:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
c

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Swati from Ryan, Bengaluru
Subject :NSO    Class : Class 8

Ans 1:

Chatresh ramasai gudi from Bgsnps , Bangalore
Class : Class 8

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

Ans 3:

from DPS R.K. PURAM,
Class : Class 9

Ans 4:

Het Aryan from Podar International School , Pune
Class : Class 9
The correct answer is B.

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Kavya Upadhyay from NVN Jamnagar, Jamnagar
Subject :NSO    Class : Class 3

Ans 1:

Riddhhima lalwani from Akshar, Kolkata
Class : Class 8

Ans 2:

KARTIK SHINDE from Delhi Public school Rau Indore , indore
Class : Class 4

Ans 3:

Aadi Mukherjee from DPS, Durgapur
Class : Class 4

Ans 4:

MAYANK from Jain Public School, REWARI
Class : Class 9
B

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shivan iyer from dr pillai global academy, MUMBAI
Subject :NSO    Class : Class 4

Ans 1:

Sandipta Bhattacharjee from Sri Ram Narayan Singh Memorial High School, Kolkata
Class : Class 5
Answer will be A). It is because, humus is found on topsoil and not in deep layers of soil.

Ans 2:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4
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Ans 3:

shivan iyer from dr pillai global academy, MUMBAI
Class : Class 4

Ans 4:

shivan iyer from dr pillai global academy, MUMBAI
Class : Class 4
c correct

Ans 5:

shivan iyer from dr pillai global academy, MUMBAI
Class : Class 4

Ans 6:

Ameya Dhuri from Birla Public School, Doha
Class : Class 8
I don't know

Ans 7:

S Malhotra from SFS , New Delhi
Class : Class 5

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Pranava Sreeyush from Kennedy High the Global School, Hyderabad
Subject :NSO    Class : Class 8

Ans 1:

Harshit from Army Public School, Lucknow
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:

Daksha Swaminathan from Horiozon Scholars and Neo Kids, Mumbai
Class : Class 8

Ans 3:

Neh singla from Delhi public school, Chandigarh
Class : Class 5
hi

Ans 4:

Soham from Vibgyor high, Pune
Class : Class 8

Ans 5:

Yash Bindal from Global Indian International School, Singapore
Class : Class 9

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Pranava Sreeyush from Kennedy High the Global School, Hyderabad
Subject :NSO    Class : Class 8

Ans 1:

NAMAN HARITASH from DPS DLF CITY, GURGAON
Class : Class 9
the answer is not correct

Ans 2:

Pratyush Singh from St. John's School Marhauli, Varanasi
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 3:

Student from School, City
Class : Class 8
As per solution, 243 days is longer than a year.

Ans 4:

Ashvik Banerjee from Mount Litera Zee School , Vasco
Class : Class 9
confusing

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Siddharth Mahesh from mdav public school , Hyderabad
Subject :NSO    Class : Class 8

Ans 1:

Shaurya Verma from NPS HSR, Bangalore
Class : Class 9

Ans 2:

A Venkata Sai Pranav from Podar International School, Bhusawal
Class : Class 9

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is D.

Ans 4:

Akshara from NPS, Bengaluru
Class : Class 8
the figure given is wrong.. the second figure says - granules of y... it should have been 'granules of x''

Ans 5:

Avyukth Radhakrishnan from TSRS, Gurgaon
Class : Class 10
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.

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GAURAB DASH from St Mary's convent school, Baripada
Subject :NSO    Class : Class 6

Ans 1:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
B

Ans 2:

VIJAYA SREYAS B from NARAYANA OLYMPIAD SCHOOL KUKATPALLY, HYDERABAD
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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Soham from , Ghaziabad
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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