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ABHAY AGARWAL from ,
Subject :NSO    Class : Class 4

Ans 1:

adhiraj chaudhary from apeejay school noida, noida
Class : Class 3

Ans 2:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
d

Ans 3:

vivaan sethi from GD goenka public school, Delhi
Class : Class 4
Ans is D

Ans 4:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
why stomata?

Ans 5:

Annlisa Castlia from BPS, HYD
Class : Class 5
The correct answer is option D.

Ans 6:

Annlisa Castlia from BPS, HYD
Class : Class 5

Ans 7:

Navya from Doon, Chandigarh
Class : Class 4

Ans 8:

Avyuktha S Kumar from Mt Litera Zee school, Mysuru
Class : Class 4
ans :d

Ans 9:

adhiraj chaudhary from apeejay school noida, noida
Class : Class 3
the correct answer is d

Ans 10: (Master Answer)

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

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Sahasra Shanker from KV IIT, Chennai
Subject :NSO    Class : Class 6

Ans 1:

Ishaan Roy from Sri Chaitanya Techno School, Bengaluru
Class : Class 10

Ans 2:

Agustya vaid from Somerville school vasundhara enclave, Delhi
Class : Class 7
understood?

Ans 3:

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

Ans 4:

Ananya from GIIS, Bangalore
Class : Class 6
why cant the answer be A?

Ans 5:

Raghav Aggarwal from CAMBRIDGE SCHOOL INDIRAPURAM, INDIRAPURAM
Class : Class 7

Ans 6:

NEHA JOON from dps rohini , New delhi
Class : Class 8

Ans 7:

Ishaan Roy from Sri Chaitanya Techno School, Bengaluru
Class : Class 10

Ans 8:

Agustya vaid from Somerville school vasundhara enclave, Delhi
Class : Class 7
the answer is d because the field lines of a magnet always travle from north to south

Ans 9:

Winka Jayaprakash from Sri Vijay Vidyasharam , Hosur
Class : Class 9
the field line travels from north to south

Ans 10:

arin chaitanya from the shri ram school, New Delhi
Class : Class 7

Ans 11:

Amrit Jolly from The Shri Ram School Aravali, Gurgaon
Class : Class 6

Ans 12:

Agustya vaid from Somerville school vasundhara enclave, Delhi
Class : Class 7

Ans 13:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8

Ans 14:

Veda Dua from Delhi Public School, R. K. Puram, New Delhi
Class : Class 10

Ans 15:

Rahil from Delhi Public School Faridabad, Faridabad
Class : Class 7

Ans 16:

Aadhira from velammal new gen school, Medavakkam, Chennai
Class : Class 6
The correct answer is (D) because the the magnetic field travels from north to south.

Ans 17:

kpks14 from RIMT World School, Chandigarh
Class : Class 7

Ans 18:

Dushyant Singh from Shree Ram Centenial School, Indore
Class : Class 9
sof has given c which is wrong

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Akshay Kumar from BVM, Chennai
Subject :NSO    Class : Class 7

Ans 1:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 6

Ans 2:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 6

Ans 3:

Arnav Ranka from Gyan Bharati School, Saket, New Delhi
Class : Class 9

Ans 4:

Arnav Ranka from Gyan Bharati School, Saket, New Delhi
Class : Class 9
Yes, the answer is option "C". It is not true that arteries will always carry oxygenated blood and the veins will always carry deoxygenated blood (pulmonary vein and artery).

Ans 5:

Aditya Sai Vemparala from Amanora school, Pune
Class : Class 10
C

Ans 6:

N Sankar Narahari from Madhavakripa English Nursery and Higher Primary School, Manipal
Class : Class 7
here option c holds true because in option a and b we can make an exception with pulmonary artery and vein.

Ans 7:

Mayank Gupta from Kulachi Hansraj Model School, New Delhi
Class : Class 8

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chandra Deb from ,
Subject :NSO    Class : Class 5

Ans 1:

Manasvi Nagpal from blooming dales international school, sri ganganagar
Class : Class 5
a and c both are correct answers

Ans 2:

Shriya Sreekrishna from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi
Class : Class 7

Ans 3:

Bhavya Agrawal from Cambridge Court High School , JAIPUR
Class : Class 8
you are correct Pragun goel . my answer is also a.

Ans 4:

Pragun goel from Venkateshwar International School, Delhi
Class : Class 8
sea snakes also breathe through skin so option 1 should also be correct.

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Shuvangi Das from Vivekananda mission school, haldia
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

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

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Rio Choudhury from South Point High School, Kolkata
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Molars and Premolars are mainly used to chew the food.

Ans 2:

Rishik Bose from vibgyor high school, mumbai
Class : Class 7

Ans 3:

Rithvik from BVM Global, Chennai
Class : Class 8
ummm........... its very tough to identify them....

Ans 4:

Pari Shiddam from PIS Powai, MUMBAI
Class : Class 7
D can also be the ans

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vaibhav from , Faridabad
Subject :NSO    Class : Class 7

Ans 1:

Areyouseriousrn from SBOA Global, Chennai
Class : Class 9
Is D. ✔

Ans 2:

Soumyajit Roy from Delhi Public School Jamnagar, Jamnagar
Class : Class 9

Ans 3:

Aryan Keswani from Delhi Public School, Mathura Road, New Delhi
Class : Class 10

Ans 4:

Arush from Anandi Public School, Udgir
Class : Class 3
such questions r always confusing.................

Ans 5:

aryan vir from lotusvalley international school gurugram, Gurgaon
Class : Class 7

Ans 6:

Areyouseriousrn from SBOA Global, Chennai
Class : Class 9
The solution: Enzyme X works best and increases the rate of reaction at an acidic pH (less than 7) of about two2️⃣ ! Enzyme Y is very very very very very very very very very very very very very very very very very efficient @ slightly acidic pH i.e., slightly less than seven!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Enzyme Z is most efficient at an alkaline pH (more than 7!!!). And alkali means a base which is soluble in water. In humans, gastric juice of stomach (a J-shaped bag with thick inner walls. Meh.) has pH in the range of 1.5-2.5, where enzymes such as pepsin, rennin etc. carry out the digestion of food. Thus, enzyme X can be found in stomach. Similarly, the saliva in the mouth of humans has sliiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiightly acidic pH of 6.8, where salivary amylase enzyme is moooooooooooooooooooooooooooooooooooooooost effective! Thus, enzyme Y can be found in the buccal cavity. Small intestine has slightly alkaline pH of 7.8, where enzymes such as trypsin help in digestion of food. So, enzyme Z can be found in duodenum. Morus Alba is the scientific name of mulberry.

Ans 7:

Tanushree from Asian International School, Colombo
Class : Class 7
Can someone pls send the explanation of why it's D🙏

Ans 8:

Arush from Anandi Public School, Udgir
Class : Class 3

Ans 9:

aryan vir from lotusvalley international school gurugram, Gurgaon
Class : Class 7

Ans 10:

aryan vir from lotusvalley international school gurugram, Gurgaon
Class : Class 7

Ans 11:

Anand Agarwal from stems, kuchinda
Class : Class 7

Ans 12:

shweta garg from Apeejay School, Ghaziabad
Class : Class 7

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ABHAY AGARWAL from ,
Subject :NSO    Class : Class 4

Refer to the given paragraph and table and answer the following questions.
Neha took 100 gm each of three types of soil, X, Y and Z, in three separate pots with hole at the bottom. The amount of water that was poured in the soil pot, just before it started dripping from the bottom hole, is tabulated here.

The soil that is mixture of clay, sand, humus and is usually very good for growth of most plants is __________.

A X
B Y
C Z
D Cannot be determined


Ans shd be D (Cannot be determined)

Ans 1:

ABHAY AGARWAL from ,
Class : Class 3

Ans 2:

ANURADHA NAIR from SANDEEPANI VIDYA NIKETHAN SCHOOL, Thrissur
Class : Class 9
B IS THE ANSWER ANURADHA NAIR 4C

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ABHAY AGARWAL from ,
Subject :NSO    Class : Class 4

Ans 1:

Visakha Dhar from GD Goenka, jhajjar
Class : Class 3
the correct answer is CFCs .but is not mention in the option.

Ans 2:

somesh from Centre point katol road, Nagpur
Class : Class 6
It is CNG

Ans 3:

Aaditya Saxena from Ryan International School Pune, Pune
Class : Class 6
The Ans shud be B Carbon Dioxide. BBBBBBBBBBB

Ans 4:

Anika S Kumar from Alphabets International school , Chennai
Class : Class 7
Chloro-fluro-carbon

Ans 5:

Mehvish Khursheed from DPSGV, ghaziabad
Class : Class 5
correct answer is CFC

Ans 6:

Tanirika Bansal from DPS Faridabad, Faridabad
Class : Class 4
CFCS should be correct answer but I got it right

Ans 7:

Shaurya Veer from Blooming Dales International School, Sri Ganganagar
Class : Class 9
The correct answer should be CFC

Ans 8:

BV Karthikeya from Sentia, Hyderabad
Class : Class 6
I GOT IT CORRECT

Ans 9:

Abhinav Kulkarni from National Centre For Excellence, Bengaluru
Class : Class 4
the ans should be CFC

Ans 10:

Nishchita from Gems Modern Academy , Dubai
Class : Class 8
The answer is B as when we use electricity fuel gets burnt and so it produces carbon dioxide.

Ans 11:

Rehaan Sejwal from Gyan Bharati school, Delhi
Class : Class 7

Ans 12:

Mohammad Shahid from Dayawati Modi International Maple Bear, Modipuram, Meerut 250110, Meerut
Class : Class 4
how the released gas from refrigerator is CO2

Ans 13:

SRISANTH from Edify, Tirupathi
Class : Class 5
Actually it is b ,as a is CNG(compressed natural gas which is a energy source that is not a greenhouse gas

Ans 14:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7
I think the answer should be CFC but it is not in the options only.But I also think that it is CO2.

Ans 15:

BV Karthikeya from Sentia, Hyderabad
Class : Class 6

Ans 16:

ABHAY AGARWAL from ,
Class : Class 3

Ans 17:

Adit Aggarwal from Vibgyor High, Bengaluru
Class : Class 5
The answer was supposed to be CFC .

Ans 18:

Deepika from Vibgyor high, Mumbai
Class : Class 1
It should be CFCS

Ans 19:

SAURISH from R.N. Podar, Mumbai
Class : Class 7
THE OPTION SHOULD HAVE BEEN CFC OR WE CAN TAKE THE OPTION D [NITROGEN] BUT IT IS SHOWING WRONG

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Jairaj Singh Basur from Vivek High School, Chandigarh
Subject :NSO    Class : Class 6

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