National Science Olympiad Forum By SOF Olympiad Trainer

Naisha from Brilliant public school b, Bilaspur

Subject :NSO Class : Class 6

Rashmi, a class 6 teacher listed the given materials on the board and asked students to classify them on the basis of transparency.
(I) Window glass (II) Oily paper
(III) Metal sheet (IV) Thin muslin cloth
(V) Concrete wall
Which of the following represents the correct classification?

AI, IV-transparent; II-translucent; III, V-opaque
BI, II-translucent; III-opaque; IV, V-transparent
CI-transparent; II, IV-translucent; III, V-opaque
DV-opaque; II, III-translucent; I, IV-transparent

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Subrata nayek from CBSC, ARAMBAGH

Subject :NSO Class : Class 6

Which of the following statements gives the opposite meaning of "Umbra"?

AA region of complete darkness
BA region of partial darkness
CA region of complete brightness
DA region of partial brightness

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SAMPAD BANERJEE from DELHI PUBLIC SCHOOL , BILASPUR

Class : Class 9

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Sarthak yadav from RPS, Mahendragarh

Subject :NSO Class : Class 7

Which of the following shows the correct match of seed and its mode of dispersal?

A
B
C
D

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Kaashvi Singh from TCIS , Bangalore

Subject :NSO Class : Class 8

In a certain code ‘bi nie pie’ means, ‘some good jokes’, ‘nie bat lik’ means ‘some real stories’ and ‘pie lik tol’ means ‘many good stories’. What is the code for ‘jokes’?

A bi
B nie
C pie
D None of these

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Dheer Bedarker from Green Valley High school , Vadodara

Subject :NSO Class : Class 6

Study the given table carefully and select the correct statement regarding P, Q, R and S.

Rough materials	P	Miscible with water	Translucent
Rock	Graphite	Vinegar	Frosted glass
Bark of a tree	Metal spoon	Milk	Tracing paper
Sand paper	Iodine crystals	R	Oiled paper
Q	Copper vessel	Lemon juice	S

AP can be replaced by metallic materials and S can be replaced by clear water.
BQ can be replaced by pumice stone and R can be replaced by honey.
CP can be replaced by lustrous materials and S can be replaced by aluminium foil.
DBoth B and C

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Khanak Jha from Prime Academy, Mumbai

Subject :NSO Class : Class 2

Study the table given below carefully.

What will be the approximate length of the shadow at 5 p.m.?

A It will be longer than 4 m.
B It will be longer than 2 m but shorter than 4 m.
C It will be longer than 0.7 m but shorter than 4 m.
D It will be longer than 0.7 m but shorter than 2 m.

it is wrong the correct ans is c

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Rishit goyal from St Peter's College, Agra

Subject :NSO Class : Class 4

Refer to the given figures representing different types of bird foot and select the INCORRECT statement regarding them.

AP could be foot of eagle having sharp claws known as talons.
BQ could be foot of woodpecker which helps it to hold onto the tree while climbing.
CR could be foot of hen which helps it to dig out insects and worms from the ground.
DS could be foot of duck which helps it to swim.

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Jeevi Ran from THANGAM MOUNT litera zee school at AYOTHIYAPATTINAM , Salem

Class : Class 6

C

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Naisha from Brilliant public school b, Bilaspur

Subject :NSO Class : Class 6

What is common among the following phenomena?
1. Blinking of traffic lights.
2. Rotation of blades of a fan.
3. Swinging of pendulum of a clock.

A All are chemical changes.
B All are periodic changes.
C All are undesirable changes.
D All are irreversible changes.

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Ans 1:

malhar thorve from city internqtional school, satara road, pune

Class : Class 6

Ans 2:

Hitarth Bhardwaj from Teoler High School, Jaipur

Class : Class 6

lammeeeeeeeeee

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saimuel from bhavans Rajaji vidyashram , Chennai

Subject :NSO Class : Class 1

Study the given diagram. Which alphabets best describe Sun and Moon respectively?

A f and d
B g and d
C g and e
D f and e

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Ans 1:

Abhiram Yerra from Vibgyor High, Mumbai

Class : Class 3

Sun and the moon both rise in the east and set in the west so C is correct

Ans 2:

Swati Stalin from Yuvabharathi International School, Singapore

Class : Class 1

I think answer is B not C, moon will not raise on EAST and set on WEST

Ans 3:

Mohammad Ateeb Qaiser from DAV PUBLIC SCHOOL, WALMI COMPLEX, PHULWARI SHARIF , PATNA, patna

Class : Class 4

yes , answer should be B

Ans 4:

rudra shandil from Wishvashanti Gurukul, Alandi, Pune

Class : Class 2

Moon does not rise in east everyday. C is the wrong answer. B is right one

Ans 5:

Nithya Soman from The Charter School, Eranakulam

Class : Class 2

answaer should be B

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Akshara from sishya OMR , chennai

Subject :NSO Class : Class 6

Refer to the given dichotomous key.

ADeficiency of P causes a disorder called anaemia which can also be caused by deficiency of a vitamin known as B12.
BOur body is capable of manufacturing Q so we need not supplement it externally through our diet.
CDeficiency of R causes beriberi in children and pellagra in adults.
DS also helps in building resistance against infection in children and is found abundantly in citrus fruits.

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