National Science Olympiad Forum By SOF Olympiad Trainer - Page 625

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B M Pranaavjith from ISD, MUscat

Subject :NSO Class : Class 3

A 701
B 500
C 904
D 808

Ans 1:

Kushagra Sah from Bahrain Indian School, Manama Bahrain

Class : Class 9

Ans 2: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is C.

Post Your Answer

Adithi Keshava from National Center For Excellence , Bangalore

Subject :NSO Class : Class 4

The given figure is made up of 6 identical rectangles. If its perimeter is 108 cm, find the breadth of each rectangle.

A 28 cm
B 14 cm
C 7 cm
D 10 cm

Ans 1:

Saanvi Agarwal from New Town School, Kolkata

Class : Class 4

No it is not the write answer

Ans 2:

Prerona Chatterjee from Delhi Public School North Kolkata, Kolkata

Class : Class 5

it is aright answer.

Ans 3:

Rudhra from Credence high, Dubai

Class : Class 4

Ans 4:

Ibrahim Aslam from uttam, Ghaziabad

Class : Class 5

Ans 5:

Samika Ranjan from The Shri Ram School Aravali, Gurgaon

Class : Class 7

c. the length of an rectangle is 10 so the length of all the rectangles (perimeter only) is 80. 80-108=28. 28÷4=7.

Ans 6:

Ibrahim Aslam from uttam, Ghaziabad

Class : Class 5

It is correct answer!

Ans 7:

Rishita Sivakumar from Indian High School, Karama Dubai

Class : Class 9

correct answer

Post Your Answer

A from ABC, Mumbai

Subject :NSO Class : Class 3

Jia read 20 pages of a book each night. How many pages in all did Jia read in 7 nights ?

(A) 80

(B) 90

(D) 140
d is correct as 20 * 7 = 140

Ans 1:

Shanaya Siddhartha from Bal Bharati Public School, Navi Mumbai

Class : Class 3

d is the answer

Ans 2:

Arshiya Shaikh from Mansukhbhai Kothari National School, Pune

Class : Class 3

Post Your Answer

Sahasra Shanker from KV IIT, Chennai

Subject :NSO Class : Class 6

Examine the given figures. Which is roughage-rich food ?

(A) a

(B) b

(D) a, b & c
Answer is Ba: eggs ,milk,fish ,meat -----protein richb: bread , potato, grain , porridge -----roughage richc: banana , pineapple, pear ,apple --------vitamins and minerals this was given in the solution option. i had marked the answer'b' but the ans is coming 'c' and shown this is wrong even though in the solution it's given 'b'why?

Ans 1:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad

Class : Class 6

C is only rich in roughage b is rich in vitamins calcium phosphorus

Post Your Answer

Sahasra Shanker from KV IIT, Chennai

Subject :NSO Class : Class 6

The height of our school building is 8 m 25 cm. This is same as _____.

(A) 8025 cm

(B) 825 cm

(D) 80025 cm
isn't it like 8250cm and 825cm same?

Post Your Answer

Sahasra Shanker from KV IIT, Chennai

Subject :NSO Class : Class 6

The ratio of 4^3.5 and 2⁵ is same as :

(A) 4 : 1

(B) 8 : 15

(D) 3 : 4
how do we solve this question? it kind of appears to be difficult.could anyone mind to teach me this question? please...

Ans 1:

kpks14 from RIMT World School, Chandigarh

Class : Class 7

Post Your Answer

Sahasra Shanker from KV IIT, Chennai

Subject :NSO Class : Class 6

If the English alphabets are written in the reverse order and every alternate letter starting with Y is dropped, which letter will be exactly in the middle of the remaining letters of the English alphabet ?

(A) M

(B) N

(D) M or O

View All Answers (2)

Ans 1:

Tanvi arya from Ravindra bharathi global school, Chennai

Class : Class 6

maybe answer should be M why did they mark n

Ans 2:

Vatsal from Cabridge, Noida

Class : Class 6

as per me answer should be m

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Anisha Agarwal from Amity International School Noida, Noida

Subject :NSO Class : Class 3

Q can hear the sound made by P in the shortest time, when the medium is a ___________.

A Brick wall
B Water
C Air
D Vacuum

where is Q and P, picture is missing

View All Answers (17)

Ans 1:

Jasleen Kaur from apeejay school, Jalandhar

Class : Class 2

Ans 2:

Raiyaan Kidwai from Lotus Valley International School, Noida

Class : Class 3

Ans 3:

AARAVPRADEEP SAHU from PADMASESHADRI BALBHAVAN SENIOR SECONDARY SCHOOL, CHENNAI

Class : Class 3

Ans 4:

Prasanna Hegde from Vibgyor High Horomavu, BENGALURU

Class : Class 5

Ans 5:

Arihant Medhi from Dps Barasat, Kolkata

Class : Class 8

The correct answer is A.

Ans 6:

Ivan Tyagi from Chirec International School , Hyderabad

Class : Class 8

YES NISHANT

Ans 7:

debapriya biswal from hemsheela model school, durgapur

Class : Class 6

Ans 8:

Nishant Hazarika from Air Force School, Dibrugarh

Class : Class 3

Answer is B as sound travels faster in water

Ans 9:

Aditya Sharma from DPSN, NOIDA

Class : Class 3

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Ans 10:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Class : Class 8

answer is B or C as from brick wall sound can't be heard also from vacuumsound can't be heard

Ans 11:

Aaron Mathew from STRS, Thiruvananthapuram

Class : Class 7

Ans 12:

Kartikey Kumar Jindal from Dikshant International School, Zirakpur

Class : Class 5

The correct answer is A part

Ans 13:

debapriya biswal from hemsheela model school, durgapur

Class : Class 6

Ans 14:

ALICE from Delhi Public School, UDAIPUR

Class : Class 9

Ans 15:

Ram Rakshith from JHPS, Hyderabad

Class : Class 5

The answer is C

Ans 16:

Arihant Medhi from Dps Barasat, Kolkata

Class : Class 8

See the answer solution carefully.

Ans 17:

debapriya biswal from hemsheela model school, durgapur

Class : Class 6

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Gauri Singh from St Johns School Marhauli, Varanasi

Subject :NSO Class : Class 5

Four identical beakers, W, X, Y and Z, were set up as shown below and placed under sunlight for a day.
In which beaker will the concentration of carbon dioxide be the highest?

A
B
C
D

View All Answers (23)

Ans 1:

Satvik Agrawal from Delhi Public School, bhopal

Class : Class 5

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Ans 2:

Kavin from ISG , Muscat, Muscat

Class : Class 5

Ans 3:

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Class : Class 9

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Ans 4:

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Class : Class 5

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Ans 5:

harry potter from Hogwarts school of witchcraft and wizardry , london

Class : Class 5

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Ans 6:

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Class : Class 4

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Ans 7:

Abhijato Chatterjee from Bharatiya Vidya Bhavan, Kolkata, kOLKATA

Class : Class 6

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Ans 8:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram

Class : Class 7

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Ans 9:

shubhavi Dhondge from NPS, Banagalore

Class : Class 9

Ans 10:

Dushyant Singh from Shri Ram Centennial School, Indore

Class : Class 6

c is correct

Ans 11:

Ishan sandip chaudhari from Divine Child International School, Ahmedabad

Class : Class 5

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Ans 12:

Mannat Verma from Vivek High School , Chandigarh

Class : Class 6

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Ans 13:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR

Class : Class 10

It should be a because in option c the carbon dioxide produced by the snail will be absorbed by hydrilla and the oxygen produced by hydrilla will be used by the snail but in option a only carbon dioxide will be produced so option a is correct

Ans 14:

Prayag Baliyarsingh from RNS IS, Bangalore

Class : Class 1

hold on it says about most co2 levels so c is right

Ans 15:

Samanyu from NPSI, Singapore

Class : Class 5

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Ans 16:

Athiya Mahapatra from ITL Public School, NewDelhi

Class : Class 5

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Ans 17:

krishneil from Elpro international school, Pune

Class : Class 6

both a and c

Ans 18:

Aabhineet Patnaik from Lakshya International School, Kakinada

Class : Class 5

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Ans 19:

SIDDHARTH KUMAR CHATTERJEE from NAVY CHILDREN SCHOOL , CHICALIM

Class : Class 7

c is for correct in c the plant is in a bag so no sunlight so it does not do photosythesis and both produce carbon di oxide

Ans 20:

Irresh Vijay from NPSI Singapore, Singapore

Class : Class 8

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Ans 21:

SIDDHARTH KUMAR CHATTERJEE from NAVY CHILDREN SCHOOL , CHICALIM

Class : Class 7

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Ans 22:

UMA Subramanian from Global Indian International School, Singapore

Class : Class 7

Ans 23:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Class : Class 9

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Gauri Singh from St Johns School Marhauli, Varanasi

Subject :NSO Class : Class 5

______ is the plant that disperses its seed by the same agency as the plant shown here.

A Dandelion
B Coconut
C Mango
D Tiger's claw

View All Answers (18)

Ans 1:

INDRANI GHOSH ROY from AMRITA VIDYALAYAM, Durgapur

Class : Class 5

Option A is the correct answer because the picture of the given plant in the question is of a cotton plant of whose seed dispersal agency is wind. So, from the given options , as, Dandelion is the only one with same agency of seed dispersal, Option A is supposed to be the correct answer.