National Science Olympiad Forum By SOF Olympiad Trainer

Anwita L Bhat from Vijaya vittala vidyashala, Mysore

Subject :NSO Class : Class 4

The layer of Earth which is molten and is mainly made of iron and nickle is _______.

ACrust
BMantle
COuter core
DIner core

Ans 1:

Anwita L Bhat from Vijaya vittala vidyashala, Mysore

Class : Class 4

The answer's actually inner core

Ans 2:

Keerthi A from CampusK, Chennai

Class : Class 5

Ans 3:

R R from DPS, Kuwait

Class : Class 4

ans is mantle

Ans 4:

Santina Suzanne from owis, bangalore

Class : Class 4

ans is mantle

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Sadhika from Chinmaya Vidyalaya, Ernakulam

Subject :NSO Class : Class 4

Renu observed waxing Crescent Moon on 28^th September. Which phases of Moon will she observe on 5^th October and 12^th October?

A
B
C
D

Ans 1:

Overtaker from Blore, Blore

Class : Class 4

B

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Vedang Siddharth Thakare from SMT's Saraswati English Medium School., Thane

Subject :NSO Class : Class 4

Refer the given figure and select the correct option to complete the sentence. Organ L receives ________ and _________ from organ M.

ADigested food and nutrients
BUndigested food and nutrients
CUndigested food and water
DNutrients and proteins

C

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Ans 1:

Krishika Madan Shanmugam from National Public School, Bangalore

Class : Class 6

Ans 2:

Dhyeya Deshmukh from Kothari International School, Pune

Class : Class 4

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Aadya Kawale from Podar International ICSE , Dombivli East

Subject :NSO Class : Class 4

Which factor will most likely cause a decrease in the force of attraction between two magnets?

A Increasing the size of the two magnets
B Increasing the distance between the two magnets
C Changing the color of the two magnets
D None of these

B

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Ans 1:

K PAVAN KARTHIKEYA from dev-in national school, bangalore

Class : Class 4

its obvious

Ans 2:

Aadya Kawale from Podar International ICSE , Dombivli East

Class : Class 4

Option B

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Deveshi Sachdev from venkateshwar international school, New Delhi

Subject :NSO Class : Class 4

The given figure shows four stages in the life cycle of a housefly. If all four stages are kept in an empty container without food and water, which stages will be able to survive?

AP and S
BR and S
CP and Q
DQ and S

pls someone expla

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suhana priyadarsini nayak from Orchid international school , Bengaluru

Subject :NSO Class : Class 4

Which of the following mixtures can be separated easily into two groups with the help of a magnet?

AToothpicks and matchsticks
BIron nails and steel needles
CIron nails and sugar cubes
DShredded paper and fallen leaves

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Ans 1:

suhana priyadarsini nayak from Orchid international school , Bengaluru

Class : Class 7

Ans 2:

suhana priyadarsini nayak from Orchid international school , Bengaluru

Class : Class 7

Ans 3:

Rudransh Aneja from Billabong High, Noida

Class : Class 5

The answer is C

Ans 4:

suhana priyadarsini nayak from Orchid international school , Bengaluru

Class : Class 7

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RC from Vibgyor, Navi Mumbai

Subject :NSO Class : Class 4

Which of the following is the common characteristic among the animals shown in the given box?

AThey are warm-blooded animals.
BThey feed on other living things.
CThey hatch from eggs.
DThey cannot fly.

ALL THE OPTIONS ARE WRRRRRRROOOOOOOOOOOOOOOOOOOOOOOOOONNNNNNGGGGGGGG

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Ans 1:

Madhuri P from ,

Class : Class 4

Ans 2:

Shadaan Ali Khan from Chirec International School, Hyderbad

Class : Class 5

Ans 3:

Malav patel from Navrachana school sama , Vadodara

Class : Class 5

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suhana priyadarsini nayak from Orchid international school , Bengaluru

Subject :NSO Class : Class 4

Read the given paragraph.
X and Y are the two planets of our Solar System. X is the hottest planet and is often referred to as Morning or Evening star. Surface of Y is covered by red dust so it appears red and is often referred to as Red planet.
Identify planets X and Y and select the correct option regarding them.

A X has one moon whereas Y has sixty two moons.
B Y is an inner planet made up of rocks and iron whereas X is an outer planet made up of gases.
C Indian name of X is Shukra whereas that of Y is Mangal.
D Both X and Y have rings around them but Y is the fastest spinning planet.

C

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Ans 1:

Naisha Gupta from DPS School, Khajaguda, Hyderabad

Class : Class 4

C

Ans 2:

Naisha Gupta from DPS School, Khajaguda, Hyderabad

Class : Class 4

(Master Answer) C

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Vivaan Gadelli from Bombay Scottish School Powai, Mumbai

Subject :NSO Class : Class 4

Beak used for catching fish in water is

A
B
C
D

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Ans 1:

Yatindra G from SBOA, Chennai

Class : Class 4

how Aadya? HOWWWWWWWWWWWW

Ans 2:

Deveshi Sachdev from venkateshwar international school, New Delhi

Class : Class 6

it is D

Ans 3:

Aujusmai Dhingra from Sharon's Public School, Patna

Class : Class 6

Aadya is correct.

Ans 4:

Aadya Kawale from Podar International ICSE , Dombivli East

Class : Class 4

It’s option A.

Ans 5:

Aujusmai Dhingra from Sharon's Public School, Patna

Class : Class 6

Hello

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AARNAV SINGH from Prudence school Ashok vihar Delhi, Delhi

Subject :NSO Class : Class 4

Refer to the given diagram where X and Y represent substances while P and Q represent organs.

Which of the following best represents organs P and Q; and substances X and Y?

Organ P---Organ Q---Substance X---Substance Y

ASmall intestine---Pancreas---Water---Undigested food
BLarge intestine---Small intestine---Digested food---Water
CLarge intestine---Anus---Digested food---Water
DSmall intestine---Large intestine---Digested food---Undigested food

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Ans 1:

Overtaker from Blore, Blore

Class : Class 4

D

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