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Pranathi Dindikurthi from Carmel School, Bangalore
Subject :NSO    Class : Class 6

Aarushi took two food samples X and Y in separate test tubes. She added 2-3 drops of Benedict’s solution in food sample X and heated it while she added two drops of copper sulphate solution and few drops of caustic soda solution in food sample Y. She observed that sample X turned brick-red while sample Y turned purple.
Which of the following is correct regarding X and Y?

A X consists of protein while Y consists of starch.
B X consists of sugar while Y consists of protein.
C X consists of starch while Y consists of protein.
D X consists of sugar while Y consists of starch.


Ans 1:

satwik patnaik from DPS Rourkela, Rourkela
Class : Class 7
answer is b

Ans 2:

Mihika Raut from ST JOSEPHS SCHOOL, RIHAND NAGAR
Class : Class 8
the correct answer is B

Ans 3:

Aaditya Vichare from St. John's Universal School, Mumbai
Class : Class 10
The answer is actually C because starch consists of carbohydrates and sugars, but sugars is not the exact answer.

Ans 4:

Himmat Singh from r.p.s school, Mohindergarh
Class : Class 7
The correct answer is b

Ans 5:

S SAHITHYAA RAMAN from Padma Seshadri T Nagar, Chennai
Class : Class 7
Answer is c

Ans 6:

RICHIK MOULIK from Oxebow English School, ASHOKNAGAR
Class : Class 6
B is the correct answer

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ABHAY AGARWAL from ,
Subject :NSO    Class : Class 4

Rohit performed an experiment wherein he set up three test tubes as shown in the figure. Select the INCORRECT statement regarding this.


ATest tube P will have most carbon dioxide after three hours.
BTest tube Q will have least oxygen after three hours.
COrganisms in test tube R will survive for a longer time as compared to organisms in test tubes P and Q.
DNo oxygen will remain in test tube P after some time.


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Ans 1:

Ainesh das from Chrysalis, Bangalore
Class : Class 4

Ans 2:

PARTH MEHTA from Navrachana school, Vadodara
Class : Class 6

Ans 3:

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

Ans 4:

avighna wuthoo from The bishop school , PUNE
Class : Class 7

Ans 5:

Bushra aslam from uttam, Ghaziabad
Class : Class 8

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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: (Master Answer)

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

Ans 3:

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

Ans 4:

Annlisa Castlia from BPS, HYD
Class : Class 5

Ans 5:

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

Ans 6:

Navya from Doon, Chandigarh
Class : Class 4

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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

kpks14 from RIMT World School, Chandigarh
Class : Class 7

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

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 10:

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 11:

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

Ans 12:

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

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9

Ans 17:

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

Ans 18:

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

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

Ans 1:

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

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:

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 5:

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 6:

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

Ans 7:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 6

Post Your Answer

chandra Deb from ,
Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

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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:

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

Ans 2:

Pari Shiddam from PIS Powai, MUMBAI
Class : Class 8
D can also be the ans

Ans 3: (Master Answer)

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

Ans 4:

Rishik Bose from Vibgyor High, Airoli, Mumbai
Class : Class 8

Post Your Answer

vaibhav from , Faridabad
Subject :NSO    Class : Class 7

Ans 1:

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 2:

Arush from Anandi Public School, Udgir
Class : Class 3

Ans 3:

shweta garg from Apeejay School, Ghaziabad
Class : Class 7

Ans 4:

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

Ans 5:

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

Ans 6:

Anand Agarwal from stems, kuchinda
Class : Class 7

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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

Ans 11:

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

Ans 12:

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

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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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