National Science Olympiad Forum By SOF Olympiad Trainer - Page 302

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Srihari g from silveroaks, hyderabad

Subject :NSO Class : Class 10

Two equilateral prisms are arranged as shown in diagram.

If white light incident on prism X then
Statement 1 : The ray of light which emerges out of the prism Y will be white light.
Statement 2 : The refraction produced by the prism Y is equal and opposite to that produced by prism X.

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 Statement 1 is false but statement 2 is true.

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Anshuman from Army Public School Kirki, Pune

Subject :NSO Class : Class 3

Which of these is an INCORRECT relationship?

ALungs : Nose : Intestine
BStomach : Mouth : Teeth
CKidney : Lungs : Skin
DCapillaries : Heart : Veins

C option is correct because lungs come in respiratory system not excretory system

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Nishit Vaity from Euro School Airoli, Navi Mumbai

Subject :NSO Class : Class 4

Study the given adaptation of animal X.
(i) It lives in freezing conditions of Antarctic region.
(ii) It has a thick layer of blubber under the skin.
(iii) It can swim under water.
(iv) It possess feathers.
Which of the following could be animal X?

APolar bear
BWalrus
CPenguin
DEmu

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Ans 1:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane

Class : Class 4

Ans 2:

Nishit Vaity from Euro School Airoli, Navi Mumbai

Class : Class 6

null null

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Prisha Shah from Euroschool Airoli, Mumbai

Subject :NSO Class : Class 5

Study the given statements regarding X.
(i) It forms a protective cage around the lungs, heart and kidneys.
(ii) It is attached to the thoracic part of the backbone.
(ii) It has thin, flat and curved bones.
X could be

A Skull
B Ribcage
C Backbone
D Girdle

the answer should be B.

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Ans 1:

Diya Anilkumar from DPS Bangalore North, Bangalore

Class : Class 5

The answer is d

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Aayush Reddy Bomidika from Delhi Public School Nacharam, Hyderabad

Subject :NSO Class : Class 6

Seema has been asked by her teacher to tell one main characteristic of each of the three planets Venus, Jupiter and Saturn, so that these can be distinguished from other planets. Which one of the following option is correct?

AVenus : next to Earth, Jupiter : smallest planet, Saturn : farthest from the Earth
BVenus : smallest planet, Jupiter : brightest planet, Saturn : having rings
CVenus : brightest planet, Jupiter : biggest planet, Saturn : having rings
DVenus : biggest planet, Jupiter : having rings, Saturn : next to Earth

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Ans 1:

Deekshithaa K from Good Shepherd Public School, Sriganganagar

Class : Class 6

Ans 2:

Siddhartha from Gyanfort school, Farrukhabad

Class : Class 6

Answer is C

Ans 3:

Harshil from Pawar Public School, PUNE

Class : Class 6

c is the answer

Ans 4:

Deekshithaa K from Good Shepherd Public School, Sriganganagar

Class : Class 6

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Shreya from HIS , Chennai

Subject :NSO Class : Class 5

Which of the following is not a migratory bird?

A
B
C
D

the picture is not so clear

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Ans 1:

Alina Chattopadhyay from Tagore International School, Vasant Vihar, New Delhi, South Delhi

Class : Class 6

since when do ducks migrate?

Ans 2:

ritvik from VIDYA SHREE INTERNATIONAL SCHOOL rohtak, rohtak

Class : Class 6

Ans 3:

Alina Chattopadhyay from Tagore International School, Vasant Vihar, New Delhi, South Delhi

Class : Class 6

D should be correct

Ans 4:

Kunal Mishra from DPS KALINGA, BHUBANESWAR

Class : Class 7

Ans 5:

Dushyant Singh from Shri Ram Centennial School, Indore

Class : Class 6

C IS NOT A MIGRATORY BIRD.

Ans 6:

samanvay sinha from School of India, Bangalore, bengaluru

Class : Class 5

Ans 7:

samanvay sinha from School of India, Bangalore, bengaluru

Class : Class 5

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SPRIHA SINGH from KV BEML Nagar, KGF

Subject :NSO Class : Class 3

I make nest with stones and pebbles and live in a very cold place. I am a good swimmer but cannot fly. Who am I?

A
B
C
D

The correct answer is C.

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Ans 1:

Achyut Rai from THE KHAITAN SCHOOL, NOIDA

Class : Class 7

Ans 2:

Shruti from ,

Class : Class 1

Ans 3:

Ava from trio, bangalore

Class : Class 2

Penguins cannot fly but are good swimmers.Penguins live in cold places and make a nest using stones and pebbles.

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swetha gokul from srivijay vidhyashram , dharmapuri

Subject :NSO Class : Class 5

Find P + Q + R + S, so that the sum of all the numbers along each line is 15.

A 28
B 27
C 24
D 23

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Manasvi Nagpal from blooming dales international school, sri ganganagar

Subject :NSO Class : Class 5

Vijay performed an experiment to compare the heat conductivity of four different materials P, Q, R and S. Thumbtacks were fixed with wax on each material and then the materials were fixed to a trough containing hot water as shown in the diagram.

Vijay tabulated his results as shown here.

What can be inferred from his experiment?

A Material R is a better conductor of heat than material S.
B Material S is a better conductor of heat than material R.
C Material Q is a better conductor of heat than material P.
D Materials P, Q, R and S are equally good conductors of heat.

ans is a

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Ans 1:

Adhrith Ballakur from SKCH, Bangalore

Class : Class 7

Answer is A, I think

Ans 2:

Student from School, City

Class : Class 8

What Are P, Q, R
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                                                                                                                        <textarea class="form-control" id="editAnsPostMessage" name="editAnsPostMessage" rows="10">my kids some people get confused but correct is A

Saipriya from Sankara, Chennai

Class : Class 9

my kids some people get confused but correct is A

Ans 4:

Manasvi Nagpal from blooming dales international school, sri ganganagar

Class : Class 5

ans is a

Ans 5:

Amber Nikhil Nadkarni from dps, Chandigarh

Class : Class 2

Ans 6:

Vihaan from Dhirubhai Ambani International School, Mumbai

Class : Class 5

Ans 7:

Pratham Dave from GNS, Bangalore

Class : Class 7

Ans 8:

Dhrishaj from Kendriya Vidyalay, IISc, Bangalore

Class : Class 6

very silly

Ans 9:

Dhrishaj from Kendriya Vidyalay, IISc, Bangalore

Class : Class 6

How ?

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Aarav chandak from Witty internatioal school, Bhiwara

Subject :NSO Class : Class 5

The given set-up shows separation of impurities from water. Select the correct option for figure. Process P Q A Distillation Water + Salt Pure water B Evaporation Water + Mud Mud C Filtration Water + Salt Pure water D Sublimation Water + Sugar Water

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