National Science Olympiad Forum By SOF Olympiad Trainer - Page 309

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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:

Vihaan from Dhirubhai Ambani International School, Mumbai

Class : Class 5

Ans 2:

Manasvi Nagpal from blooming dales international school, sri ganganagar

Class : Class 5

ans is a

Ans 3:

Pratham Dave from GNS, Bangalore

Class : Class 7

Ans 4:

Student from School, City

Class : Class 8

What Are P, Q, R
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Amber Nikhil Nadkarni from dps, Chandigarh

Class : Class 2

Ans 6:

Dhrishaj from Kendriya Vidyalay, IISc, Bangalore

Class : Class 6

How ?

Ans 7:

Adhrith Ballakur from SKCH, Bangalore

Class : Class 7

Answer is A, I think

Ans 8:

Saipriya from Sankara, Chennai

Class : Class 9

my kids some people get confused but correct is A

Ans 9:

Dhrishaj from Kendriya Vidyalay, IISc, Bangalore

Class : Class 6

very silly

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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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Manasvi Nagpal from blooming dales international school, sri ganganagar

Subject :NSO Class : Class 5

Which of the following would you use to join X and Y in the circuit below so that the bulb lights up?

A An aluminium rod
B A plastic spoon
C A woollen string
D An eraser

answer is a because an aluminium rod conducts electricity well

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Ans 1:

Rimi from TLISK, pune

Class : Class 9

o meri chandni

Ans 2:

Manasvi Nagpal from blooming dales international school, sri ganganagar

Class : Class 5

ans is abecause an aluminium conducts electricity well

Ans 3:

TANVI DAS from GAIL DAV Public School , Dibiyapur

Class : Class 8

Answer is A as aluminium is a conducter, i.e. it conducts electricity and heat well.

Ans 4:

Vivaan from RN podar chool, Mumbai

Class : Class 6

yes the genius has replied correctly AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Ans 5:

Satvik Agrawal from Delhi Public School, bhopal

Class : Class 5

aaaaaaaaaaaaaaaaaaaaaaaaaaaaa

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Dhruva from VSSIPS, Bangalore

Subject :NSO Class : Class 7

The given box shows some adaptations shown by different animals. Which of the following options correctly classifies these adaptations in accordance to desert region and polar region?

--------Desert region--Polar region
A(i)----------------(ii), (iii), (iv)
B(i), (iv)----------------(ii), (iii)
C(i), (iii), (iv)----------(ii)
D(ii), (iii)----------------(i), (iv)

This is definitely wrong. Animals of the desert region (mainly camel) produce less urine so that they donât dehydrate themselves. How is the answer option C.????

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Dhruva from VSSIPS, Bangalore

Subject :NSO Class : Class 7

The given diagram shows the splitting of white light into its seven component colours when white light is passed through the prism.

Which of the following options correctly lists the colours of the marked rays?

--------1----------2----------3--------4
AViolet---Blue---Yellow---Red
BViolet---Orange---Green---Red
CRed---Yellow---Blue---Violet
DRed---Green---Orange---Violet

It actually has to follow the principle of VIBGYOR so option 1 has to be right

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Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Subject :NSO Class : Class 4

Which one of the following appliances changes electrical energy into both light and sound energy?

AIron
BRoom-heater
CTelevision set
DTube light

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Ans 1:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Class : Class 7

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Aditya Banerji from St. Joseph college, Allahabad

Subject :NSO Class : Class 10

The given figure shows a diagram of eye. Which of the following correctly lists the names of marked parts of the eye?

	1	2	3	4
A	Pupil	Lens	Iris	Cornea
B	Iris	Cornea	Pupil	Lens
C	Pupil	Cornea	Iris	Lens
D	Iris	Lens	Pupil	Cornea

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Ibrahim Aslam from uttam, Ghaziabad

Subject :NSO Class : Class 4

Rohini observed New Moon on 27^th October. Which phases of Moon will she observe on 4^th November and 11^th November, respectively?

	4^th November	11^th November
A
B
C
D

Wow!

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Ans 1:

suhana priyadarsini nayak from Orchid international school , Bengaluru

Class : Class 6

Answer d is correct as 27th November is New moon and moon changes its phase in every three days .calculate till 4th November you will see then the answer will be half moon or first quarter and then again if you calculate till 11th November the answer will be full moon then answer d is correct

Ans 2:

from DELHI PUBLIC SCHOOL, EAST, BANGALORE

Class : Class 4

Ans 3:

Iniyan from Indian public school, Salem

Class : Class 5

A is correct in google

Ans 4:

A Venkata Sai Pranav from Podar International School, Bhusawal

Class : Class 9

option A is right answer

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Fathima Zahra from Bhavans, Kodungallur

Subject :NSO Class : Class 5

What is the smallest egg compared on wheight? A ostrich B hummingbird C hen D robin

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Ibrahim Aslam from uttam, Ghaziabad

Subject :NSO Class : Class 4

A pendulum bob when released from position X, hits a plastic cup on ground and toppled it to its side.

Which one of the following correctly shows the conversions of energy that took place in this experiment?

A Potential energy of pendulum bob → Kinetic energy of pendulum bob → Potential energy of plastic cup → Sound energy
B Potential energy of pendulum bob → Kinetic energy of pendulum bob → Kinetic energy of plastic cup → Sound energy
C Kinetic energy of pendulum bob → Potential energy of plastic cup → Sound energy
D Kinetic energy of pendulum bob → Potential energy of pendulum bob → Kinetic energy of plastic cup → Sound energy

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Ans 1:

Anshhi from Suncity School, Gurgaon

Class : Class 4

Ans 2:

Ibrahim Aslam from uttam, Ghaziabad

Class : Class 5

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