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Mathangi Parthasarathi from ,
Subject :NSO    Class : Class 4

Ans 1:

Aayush Reddy Bomidika from Delhi Public School Nacharam, Hyderabad
Class : Class 7

Ans 2:

Shaurya Srivastava from delhi public school, navi mumbai
Class : Class 5
how can a plant release carbondioxide???

Ans 3:

Nidhesh Agarwal from Chinmaya vidyalaya, Bokaro steel city
Class : Class 4

Ans 4:

Prakriti Singh from Ryan International School, Pune
Class : Class 4
D I guess,I am not sure

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

Ans 1:

Aayush Reddy Bomidika from Delhi Public School Nacharam, Hyderabad
Class : Class 7

Ans 2:

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 3:

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

Ans 4:

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 5:

Bhumi Chheda from SVKM J V Parekh International School, Mumbai
Class : Class 8
it is c because the silk has already started getting produces when it is larva

Ans 6:

Ryan Ganguly from Ebenezer International School, Bangalore
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 7:

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 8:

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

Ans 9:

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

Ans 10:

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 11:

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

Ans 12:

reechik ghosh from dps, farakka
Class : Class 7

Ans 13:

Parth Gupta from Presidium Gurgaon, Gurgaon
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 14:

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

Ans 15:

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 16:

Ashwak from Cambridge International School, Saudi Al Dera
Class : Class 8
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 !

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

Ans 1:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 6
c

Ans 2:

Adithya Kumble from Deens Academy, Bangalore
Class : Class 6
how dumb am i thought c wrote d

Ans 3:

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

Ans 4:

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

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

Ans 1:

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

Ans 2:

Chatresh ramasai gudi from Bgsnps , Bangalore
Class : Class 8

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
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 4

Ans 2:

tanmay shinde from Delhi Public school Rau Indore , indore
Class : Class 5

Ans 3:

Aadi Mukherjee from DPS, Durgapur
Class : Class 4

Ans 4:

MAYANK from Jain Public School, REWARI
Class : Class 5
B

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

Ans 1:

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

Ans 2:

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 3:

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

Ans 4:

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

Ans 5:

Ameya Dhuri from Rajagiri Public School, Doha
Class : Class 4
I don't know

Ans 6:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4
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Pranava Sreeyush from Kennedy High the Global School, Hyderabad
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:

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:

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.

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

Ans 1:

Avyukth Radhakrishnan from TSRS, Gurgaon
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)

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

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

Ans 1:

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.

Ans 2:

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

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