National Science Olympiad Forum By SOF Olympiad Trainer

Shourya from Euro, Bangalore

Subject :NSO Class : Class 4

Which statement is INCORRECT for sandy soil?

AIt has large particles with lots of spaces between them.
BIt cannot hold much water.
CIt is good for plant growth.
DIt is very rough to touch and contains sand.

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Ans 1:

PAANINIDHEE CHATURVEDI from Delhi Public School, Noida

Class : Class 4

Ans 2:

B Sahanaa from Velammal Vidyalaya Avadi, Chennai

Class : Class 3

C

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Rudranksh Chiranjib Guha from Sri Sri Ravishankar Vidya Mandir, Mulund, Mumbai

Subject :NSO Class : Class 1

Which of the following is a correct statement ?

ABe careful on a rainy day as the roads are slippery.
BOn the road, always walk on your right side.
CIt is good to put your hand out of the window of a moving bus.
DNone of these

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Shivas Gupta from DPS Pune, Pune

Subject :NSO Class : Class 4

Study the given Venn diagram.

Which letters (P-T) represent Venus and Uranus?

	Venus	Uranus
A	Q	R
B	T	S
C	P	R
D	R	S

the options given are incorrect

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Ans 1:

Ayushmaan Nautiyal from MVN, Faridabad

Class : Class 5

Ans 2:

Tanisha Patri from NPS whitefield, Bangalore

Class : Class 7

Ans 3:

RAGHAV VARSHNEY from CITY MONTESSORI SCHOOL GOMTINAGAR LUCKNOW, Lucknow

Class : Class 7

Ans 4:

Krit Sinha from DPS, Bengaluru

Class : Class 4

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Nishchay Gupta from Cambridge Court World School, Jaipur

Subject :NSO Class : Class 5

In a certain language, 'READ' is coded as 'DAER', how will 'LEARN' be coded in the same language?

ALNERA
BNRAEL
CALENR
DNRALE

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Ans 1:

Riddhi Anand from New Horizon Gurukul, Bangalore

Class : Class 5

B. NRAEL

Ans 2:

Purohit Mohit Viralbhai from SDA higher secondary school, ahemdabad

Class : Class 8

READ can be coded as 1234 and DAER can be coded as 4321.So LEARN is coded as NRAEL Option B is correct

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Ryan from YBIS , SINGAPORE

Subject :NSO Class : Class 4

Which of the following is NOT an excretory organ?

ALungs
BSkin
CKidney
DHeart

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Ans 1:

PAANINIDHEE CHATURVEDI from Delhi Public School, Noida

Class : Class 4

Ans 2:

Araina from JPIS, Jaipur

Class : Class 4

skin

Ans 3:

Shourya from Euro, Bangalore

Class : Class 7

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Ryan from YBIS , SINGAPORE

Subject :NSO Class : Class 4

Read the statements made by three friends.

Nidhi : The bird P is omnivorous.
Rohit : The bird Q eats small insects and seeds.
Sandhya: The bird R sucks nectar from the flowers.
Select the correct option with respect to the statements made by Nidhi, Rohit and Sandhya

AStatements made by Rohit and Sandhya are true whereas that made by Nidhi is false.
BStatement made by Rohit is true whereas that made by Sandhya is false.
CStatements made by Nidhi and Rohit are true.
DStatements made by Nidhi and Sandhya are false.

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Ans 1:

B Sahanaa from Velammal Vidyalaya Avadi, Chennai

Class : Class 3

A

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Akilashri from Dps Jeddah, Jeddah

Subject :NSO Class : Class 3

Unscramble the letters given in the box to get the name of an animal. Now, select the correct option regarding this animal.

AIt catches its prey with the help of its long sticky tongue.
BIt sucks blood of other animals.
CIt wriggles on ground.
DIt eats its food in a similar manner as a hamster.

What is the scrambled word

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anushkasharma from cambridge court world school, jaipur

Subject :NSO Class : Class 10

Compound X decolourises acidified potassium dichromate to produce an acid with a pH value of 4.5. Which of the following could be the structure of X?

ACH₃CH₂COOH
BCH₃CH₂CH₂OH
CCH₂CHCH₃
DCH₃CH₂CH₃

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anushkasharma from cambridge court world school, jaipur

Subject :NSO Class : Class 10

A coordinate axis as shown in figure is kept in front of a converging lens at a distance 2f from it, where f is the focal length of the lens.
Which of the following shows the approximate shape of the image? Assume that X-axis is the principal axis of the lens.

A

B

C

D