National Science Olympiad Forum By SOF Olympiad Trainer - Page 382
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Mishika Singh from EISB, Bangalore
Subject :NSO    Class : Class 4

Ans 1:

AVANTIKA V from Amrita Vidyalayam Puducherry , Puducherry
Class : Class 4
The answer is D

Ans 2:

ishit from EUROSCHOOL THANE, THANE WEST
Class : Class 7
The answer is D because in container X after three hours due to the respiration of the there will be less O2 and more Co2.Nice question

Ans 3:

ARNAV MISHRA from delhi public school rohini, Delhi
Class : Class 5
no

Ans 4:

Aadya Kawale from Podar International ICSE , Dombivli East
Class : Class 4
Yes option D is correct

Ans 5:

Rudhra from Credence high, Dubai
Class : Class 4

Ans 6:

Apoorva Gaurav from DAV, Muzaffarpur
Class : Class 5
Ishit rai is correct

Ans 7:

Durjoy Datta from Venkateshwar International School, Sector 10, Dwarka, New Delhi
Class : Class 5
Yes it is correct.

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Kshitij from Sams, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

AUSTIN from Viswajyothi CMI Public School, Chowara
Class : Class 7
answer is not c as onion have fibrous root . the banana stem is only eaten in india

Ans 2:

RICHA BORAH from K V ANNA NAGAR, CHENNAI
Class : Class 7
Even in solution they gave A is wrong

Ans 3:

Tanmay Jain from dpsgv, ghaziabad
Class : Class 6
No option is correct.

Ans 4:

Ishita Pandey from The Samhita academy, Bengaluru
Class : Class 7
SO CONFUSING!!!

Ans 5:

SOURADEEP SHARMILA MANDAL from KENDRIYA VIDYALAYA IISC, Bengaluru
Class : Class 7
even banana stem is edible so how is the answer (A)?

Ans 6:

Parth Gupta from Presidium Gurgaon, Gurgaon
Class : Class 8
it should be C

Ans 7:

Anurag Anand from Surendranath centenary school , Ranchi
Class : Class 6
answer will be c

Ans 8:

Bhuvana Kumar Gopal from St Thomas Residential School, Trivandrum
Class : Class 4
Correct, banana stem is also edible.

Ans 9:

Jaidev from The Pupil Saveetha Eco School, Chennai
Class : Class 7
answer is b

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Kshitij from Sams, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

from dkg, akluj
Class : Class 3

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Videh Jain from Bluebells School International, Delhi
Subject :NSO    Class : Class 4

Ans 1:

Alisha from Delhi Public School , bopal, Ahemdabad
Class : Class 8
ans is B because, duckweed and water lettuce is nonflowering water plants.

Ans 2:

Yatindra G from SBOA, Chennai
Class : Class 4
But y is the correct answer being shown as A??

Ans 3:

Savya Sanjay Agarwal from Don Bosco High School, Naigaon East
Class : Class 4
good they should recheck every answer they put

Ans 4:

srijita sen from B.J.E.M school, Bhubaneswar
Class : Class 6
The answer is b,because duckweed and water lettuce are non-flowering floating plants,but in the picture there is a flowering floating plant and in the question there is written to choose the correct option similar to it.So, the answer is B.

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Kushal from Chirec, Hyderabad
Subject :NSO    Class : Class 6

Ans 1:

Prateek panigrahi from D a v public school jharsuguda, Jharauguda
Class : Class 2
All are correct

Ans 2:

Arjunkrishnan Nambiar from chinmaya vidyalaya, kannur
Class : Class 6
All are correct

Ans 3:

Amrik Pal from Kendriya Vidyalaya DRDO, Bangalore
Class : Class 6
B

Ans 4:

Prateek panigrahi from D a v public school jharsuguda, Jharauguda
Class : Class 2
B

Ans 5:

SHUBHANG SINGH from DELHI PUBLIC SCHOOL REWARI, REWARI
Class : Class 6
ALL OPTIONS ARE CORRECT

Ans 6:

Arsh Gupta from Cambridge International School, Jalandhar
Class : Class 4
b

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Kushal from Chirec, Hyderabad
Subject :NSO    Class : Class 6

Read the given passage and select the option which correctly fills any three of the blanks. (i) is the main source of water on Earth however (ii) , is considered more pure than (i) as it is free from contaminants. City roads flooded with water, dry up due to the process of (iii) . Rate of (iii) increases with (iv) in temperature. The process of (v) changes water vapour present in air into water. (iii) and (v) help in circulating water between hydrosphere and atmosphere.

A(i)-Groundwater, (ii)-Rainwater, (iv)-Decrease
B(ii)-Underground water, (iii)-Evaporation,(v)-Transpiration
C(i)-Surfacewater, (ii)-Groundwater,(iv)-Decrease
D(ii)-Groundwater, (iv)-Increase,(v)-Condensation

Ans 1:

Aaradhya Sharma from Ryan, Bangalore
Class : Class 6
Rain water is the purest form of water

Ans 2:

SHUBHANG SINGH from DELHI PUBLIC SCHOOL REWARI, REWARI
Class : Class 6
RAINWATER IS PUREST FORM OF NATURAL WATER

Ans 3:

Subhang Deep Sahu from Chrysalis High Kadugodi . , Bangalore
Class : Class 7

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Kushal from Chirec, Hyderabad
Subject :NSO    Class : Class 6

Ans 1:

Vamsi Krishnan R from CMR NPS, Bangalore
Class : Class 6

Ans 2:

Srithvik from BVBARR, hyderabad
Class : Class 8

Ans 3:

Srithvik from BVBARR, hyderabad
Class : Class 8

Ans 4:

SHARWAKSH S TIWARY from ANAND NIKETAN BHADAJ CAMPUS, AHMEDABAD
Class : Class 6
this

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Manoj Sohan Gajula from Vibgyor High, Bangalore
Subject :NSO    Class : Class 7

Read the following statements and select the correct option.
Statement 1 : It is not possible to photograph a virtual image.
Statement 2 : An image is said to be virtual if the reflected or refracted rays are diverging in nature.

A Both statement 1 and statement 2 are true and statement 2 is the correct explanation of statement 1.
B Both statement 1 and statement 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 Statement 1 is false but statement 2 is true.


Ans 1:

arnav raj sharma from ST. Xaviers High school, Gurgaon
Class : Class 7
the correct answer is (b) as a virtual image cannot be captured on a screen which means it cant be photographed so statement 1 is correct and a virtual image is formed by a convex mirror and It has diverging rays so a virtual image can also be defined as an image formed by diverging rays so statement two is correct but the reason for first statement is that a virtual image cannot be captured on a screen so (b) is the correct answer

Ans 2:

Mohit Ahuja from Podar International School, Akola
Class : Class 9
(D) opt as we can definitely capture image of virtual image when we take photo of the mirror and the virtual image is defined correctly

Ans 3:

Adhrit from CHSV, Chennai
Class : Class 8
Virtual images is NOT defined correctly, because in a plane mirror parallel rays of light stay parallel. There is no divergence, but it's still a virtual image formed. So the correct answer should be both statements are false, which isn't an option for some reason

Ans 4:

SAMPAD BANERJEE from DELHI PUBLIC SCHOOL , BILASPUR
Class : Class 6

Ans 5:

Midhuna from ABCD, Banglore
Class : Class 3
both r not correct

Ans 6:

shashwat pandey from Doon International School Dalanwala, Dehradun
Class : Class 8

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Admin fly from Ddssxxx, Ax
Subject :NSO    Class : Class 6

Ans 1:

Kushal from Chirec, Hyderabad
Class : Class 7
c as carbon dioxide is not used as a fertilizer

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Simar Narula from Rishi Coaching Institute , Jaipur
Subject :NSO    Class : Class 8

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