National Science Olympiad Forum By SOF Olympiad Trainer

Nitin Agarwal from Carmel Convent Sr. Sec. School, Gwalior

Subject :NSO Class : Class 5

Study the given figures of a lunar cycle. When is New Moon most likely expected for given lunar cycle?

ANovember 10
BNovember 12
CNovember 8
DNovember 6

please explain this question

Ans 1:

kpks14 from RIMT World School, Chandigarh

Class : Class 7

D is the correct answer.

Ans 2:

laljikundu2013@gmail.com from COSSIPORE KENDRIYA VODYALAYA, Kolkata

Class : Class 5

D

Ans 3:

sai ramakrishna GUDIMETLA from AMM MATRICULATION HIGHER SECONDARY SCHOOL, Chennai

Class : Class 5

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SUSHANT TYAGI from ,

Subject :NSO Class : Class 5

Ritika performed an experiment as mentioned below: Four different types of seeds were planted in identical pots filled with the same kind and amount of soil. The pots were placed in a warm, sunny place and were given the same amount of water each day for a month. Which question about these seeds could be answered at the end of the month?

AWhich seeds grew well in the dark?
BWhich seeds produced the tallest plants?
CWhich seeds survived in cold temperatures?
DWhich seeds needed the least amount of water?

please answer this

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Ans 1:

Shriya Sreekrishna from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi

Class : Class 7

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AtishayKochar from DPS DUBAI, Dubai

Subject :NSO Class : Class 3

What fraction of the figure is shaded ?

(A)

(B)

(C)

(D)

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Ans 1:

RIDHIMA AGARWAL from dps noida, Noida

Class : Class 4

4/8

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Amar from AJ School, Navi Mumbai, Mumbai

Subject :NSO Class : Class 6

A typical flower has a stalk called P. The uppermost part of stalk is wider and is known as Q. On the top of Q different whorls are present. The outermost whorl consists of green leaf-like structures called R. The inner whorl consists of S which are brightly coloured and scented.
What are P, Q, R and S ?
P-----Q-----R-----S
(a) Thalamus-----Pedicel-----Petals-----Sepals
(b) Pedicel-----Thalamus-----Petals-----Sepals
(c) Pedicel-----Thalamus-----Sepals-----Petals
(d) Thalamus-----Pedicel-----Sepals-----Petals

good

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Dhwani Bamo from BGS International Public School, New Delhi

Subject :NSO Class : Class 5

Manomay conducted an experiment where 4 identical metal balls were allowed to roll down 4 similar curves with surfaces of different texture. The time taken for the ball to come to a complete stop for each of the different surfaces was recorded in the table below.

Which curve has the roughest surface?

A P
B Q
C R
D S

How can the roughest surface allow lesser stopping time? Answer to this question should be R. Please advise

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Ans 1:

bijendra bidrohi from ,

Class : Class 5

S

Ans 2:

ritvik from VIDYA SHREE INTERNATIONAL SCHOOL rohtak, rohtak

Class : Class 6

s is the correct answer because it takes the shortest time to stop

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namay rohatgi from apeejay school,noida, New Delhi

Subject :NSO Class : Class 6

Arrange these as first, second and third class levers?

AA, B, C
BB, A, C
CC, B, A
DC, A, B

plzz explain

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Ans 1:

param ahuja from m.p.s, Ajmer

Class : Class 9

a

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ARCHIT PATIL from KASHINATH PALOD PUBLIC SCHOOL JALGAON, Jalgaon

Subject :NSO Class : Class 5

The young plant shown here was grown from a seed that most likely came from which of the following plants?

(A)

(B)

(C)

(D)

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huzaifa from kendriye vidayalaya sanghathan, New Delhi

Subject :NSO Class : Class 8

An equilibrium state of a body is considered if all the forces acting on it

A are in the same direction
B are equal in magnitude
C have zero resultant
D can be arranged in pairs.

please help me what is equilibrium

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Ans 1:

Ridhi Goyal from DAV Public School, Ludhiana

Class : Class 9

state of rest is equilibrium so answer is when resultant force is zero

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Ishana Dash from VIDYASAGAR SHISHU NIKETAN, Midnapore

Subject :NSO Class : Class 6

the question is incomplete

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Kush Malpani from Cathedral and John Connon Senior School, Mumbai

Subject :NSO Class : Class 6

Which pair shows correct match of organism with its breathing organs?

ADolphin-Blow holes
BSnake-Moist skin
CEarthworm-Spiracles
DWhale-Gills

how is it option adolphins don't have blowholes

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