National Science Olympiad Forum By SOF Olympiad Trainer

Chanpartap from The British Co Ed High School , Patiala

Subject :NSO Class : Class 7

Match column I with column II and select the correct option form the given codes.

AP-(ii), Q-(iii), R-(v), S-(iv)
BP-(iii), Q-(v), R-(ii), S-(iv)
CP-(iii), Q-(i), R-(ii), S-(v)
DP-(ii), Q-(iii), R-(i), S-(v)

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Spandan Pradeep Pathare from Takshila school , Ahmednagar

Subject :NSO Class : Class 7

A bird is seen standing safely on a high voltage transmission line. Which of the following is the reason?

AThe body of the bird has a high resistance.
BThe scaly feet of the bird is a good insulator.
CThere is no potential difference between the two feet.
DThe trapped air in the feathers of the bird acts as an electrical insulator.

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Falguni from Navkis, Bangalore

Subject :NSO Class : Class 6

Read the given statements and select the correct option.
Statement 1 : The displacement of a body may be zero, though distance can be finite.
Statement 2 : If a body moves such that finally it arrives at initial point, then displacement is zero while distance is finite.

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 and statement 2 is false.
D Statement 1 is false and statement 2 is true.

Can someone please explain it ??

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Ans 1:

P A Reyyansh from Ann Mary School, Dehradun

Class : Class 10

this was ez...

Ans 2:

Satvik Pattanaik from GreenwoodHigh, bangalore

Class : Class 6

Ans 3:

Ritabrata Das from OPJS, Angul

Class : Class 7

Ans 4:

Vedant from DON BOSCO, CHENNAI

Class : Class 2

whats displacement

Ans 5:

SKIyer from CNS, Mumbai

Class : Class 6

Ans 6:

Ashwak from Cambridge, Jalandhar

Class : Class 9

Vedant , Displacement is the shortest distance from the initial point and the final point of a moving body

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Sujata Samal from Alchemy school, Surat

Subject :NSO Class : Class 9

Identify the Al³⁺ ion from the given structures.

A I
B II
C III
D IV

please answer this

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Alisha from Delhi Public School , bopal, Ahemdabad

Subject :NSO Class : Class 3

Rahul is visiting his friend who is admitted in a hospital. On his way to the hospital, he gets confused about the route. He then studies the map. Which of these symbols (d, e, f or g) on map will help him in locating the hospital?

Ad
Be
Cf
Dg

This is sign of Red cross socity, not for medical, Pls update information

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Ans 1:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD

Class : Class 3

A

Ans 2:

malik safana khursheed from solace international school boonora pulwama, pulwama

Class : Class 3

a

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ishit from EUROSCHOOL THANE, THANE WEST

Subject :NSO Class : Class 4

Read the list of the animals given below and answer the following question.
Fox, Frog, Mouse, Elephant, Lizard, Duck, Camel, Crow, Pig, Parrot, Buffalo, Zebra
Which of the animals given in the list lay eggs?

A Frog, Lizard, Duck, Crow, Parrot
B Fox, Frog, Duck, Crow, Parrot
C Zebra, Elephant, Mouse, Parrot, Fox
D Camel, Mouse, Buffalo, Crow, Pig

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Ans 1:

Gurnoor from Chitkara International School, Chandigarh

Class : Class 4

my ans is a

Ans 2:

Aarathy Sudhir Aarav Sudhir from Global Indian International School, Abu Dhabi

Class : Class 7

Isn't the answer wrong?

Ans 3:

Apoorva Gaurav from DAV, Muzaffarpur

Class : Class 5

Option a is correct

Ans 4:

Baibhab Mishra from City Pride, pune

Class : Class 4

A as Frog,Lizard,Duck,Crow and parrot lay eggs:- -Lizard is a reptile;it lays eggs -Duck,Crow and Parrot lay eggs;They are birds -Frog lays eggs;it is an amphibian

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Ujjayan Pal from Don Bosco School, Agartala

Subject :NSO Class : Class 10

Fill in the blanks with most appropriate option.
Bio-gas is an excellent fuel as it contains up to 75% __(i)__ . It burns without smoke, leaves no residue like ash in wood. Its heating capacity is __(ii)__ . The slurry left behind is removed periodically and used as excellent manure, rich in __(iii)__and __(iv)__.

	(i)	(ii)	(iii)	(iv)
A	Methane	High	Nitrogen	Phosphorous
B	Nitrogen	Low	Methane	Phosphorous
C	Methane	Low	Nitrogen	Oxygen
D	Oxygen	High	Nitrogen	Phosphorous

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harnoor from cambridge international school, nawanshahr

Subject :NSO Class : Class 9

On a straight road, a car starts from rest and accelerates at uniform rate of 6 m s^-2 for some time, then moves with constant speed for some time and retards at the same uniform rate and comes to rest. Total time for the journey is 24 s and average speed for journey is 20 m s^-1. How long does the car move with constant speed?

A4 s
B 8 s
C 12 s
D 16 s

answer given is wrong

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Ans 1:

savyasachi from montfort , roorkee

Class : Class 9

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Shivangi singh from Dps greater Noida, Greater Noida

Subject :NSO Class : Class 3

Match the columns and select the correct option.

A a-2, b-3, c-1
B a-1, b-2, c-3
C a-1, b-3, c-2
D a-3, b-1, c-2

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Ans 1:

malik safana khursheed from solace international school boonora pulwama, pulwama

Class : Class 3

a

Ans 2:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD

Class : Class 3

C

Ans 3:

Mohi from Vibgyor, Bangalore

Class : Class 6

C

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Nirvan from Amity International School, NOIDA

Subject :NSO Class : Class 6

Four substances P, Q, R and S are mixed in a beaker containing water. The properties of these substances are listed in the given table.

Which of the following methods of separation should be used in sequence to obtain substance S from the mixture?

AFiltration, evaporation followed by magnetic separation.
BSeparating funnel followed by churning.
CFiltration followed by magnetic separation.
DSedimentation and decantation followed by evaporation.

Fucking question

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Ans 1:

Aarav Kamdar from Global Indian International School, Singapore

Class : Class 7

Ans 2:

Amrik Pal from Kendriya Vidyalaya DRDO, Bangalore

Class : Class 6

c

Ans 3:

Harshil from Pawar Public School, PUNE

Class : Class 6

answer should be Aas according to them they have not separated sugar and salt

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