National Science Olympiad Forum By SOF Olympiad Trainer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

Door knob is an example of _________.

ALever
BWedge
CWheel and axle
DScrew

Ans 1:

ishaan from lvis, noida

Class : Class 5

bruh google says lever

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ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

_________ is the part of lever on which work has to be done.

AEffort
BLoad
CFulcrum
DAll of these

Ans 1:

RC from Vibgyor, Navi Mumbai

Class : Class 8

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 2:

Hitanshi Behera from Loyola School , Bhubaneswar

Class : Class 4

i think a someone explain

Ans 3:

Nakul Bhasker from National Public School Whitefield, Bangalore

Class : Class 5

Ritam Das, It is A as they asked which is the part WHERE work is done, not BECAUSE OF WHICH part is work done

Ans 4:

Vihaan Patil from Bombay Scottish School, Mahim Mumbai

Class : Class 6

IT IS option A

Ans 5:

Ritam Das from BGKV, Kolkata

Class : Class 6

Because of the load only we have to give the force. So option B

Ans 6:

Saarth Agrawal from Podar International School , Mumbai

Class : Class 6

It should be A as we apply or put force on the effort then only the load can be lifted so as per me the A is the correct answer

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ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

In layer 'X' of atmosphere, temperature begins to fall. Layer 'X' is known as cold layer. Thus, layer 'X' is ________.

AMesosphere
BTroposphere
CIonosphere
DStratosphere

Ans 1:

Umair Kamal from GEMS MODERN, DUBAI

Class : Class 8

Ans 2:

Abhigyan Panja from HEMSHEELA MODEL SCHOOL, DURGAPUR

Class : Class 5

NN

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ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

Select the correct statement regarding natural disasters.

AA vent through which magma is released is present in the mantle of the Earth.
BHurricanes are caused by an earthquake on the ocean floor.
CHeat from lava of volcano can cause forest fire.
DThe point under the ground where the earthquake begins is called epicentre.

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Ans 1:

Hitanshi Behera from Loyola School , Bhubaneswar

Class : Class 4

oye balle balle dhe shava shava, balle balle dhe shava shava, pio pio re kava kava gana khatham hua

Ans 2:

vishant mishra cool guy from Deens Academy, Bengaluru

Class : Class 2

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Sushil Kumar from dpsnoida, Noida

Subject :NSO Class : Class 6

Direction: Refer to the given paragraphs to answer question
P is a joint that allows movement in one plane only and shows 180° of movement. The movement of car doors resembles the movement of bones between which this joint is present. This type of joint is found in our body at elbow and in skull. Q joint allows movement in all directions and in more than one plane. This joint controls the movement of the humerus and femur bones. Movement of pestle in a mortar resembles the movement of bones in this joint.

Some of the italicised words are mentioned incorrectly in the paragraphs. Select the correct option regarding them.

AFemur should be replaced by tibia.
B180° should be replaced by 360°.
CMore than should be replaced by only.
DSkull should be replaced by knee.

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(D) : Hinge joint is present in elbow and knee.

Ans 2: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(D) : Hinge joint is present in elbow and knee.

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Sushil Kumar from dpsnoida, Noida

Subject :NSO Class : Class 6

Direction: Refer to the given paragraphs to answer question
P is a joint that allows movement in one plane only and shows 180° of movement. The movement of car doors resembles the movement of bones between which this joint is present. This type of joint is found in our body at elbow and in skull. Q joint allows movement in all directions and in more than one plane. This joint controls the movement of the humerus and femur bones. Movement of pestle in a mortar resembles the movement of bones in this joint.

The joints P and Q in the above para-graphs are respectively

AHinge joint, Pivot joint
BPivot joint, Ball and socket joint
CGliding joint, Hinge joint
DHinge joint, Ball and socket joint.

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

D

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ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

Time taken by Earth to complete one revolution around the Sun is _________.

A24 hours
B365 days
C365 days
D36 weeks

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Ans 1:

RudrashishChakraborty from Sudarshan Vidyamandir ICSE Academy, Bengaluru

Class : Class 6

B ) and C ) both are correct

Ans 2:

Ali Hussain from Delhi Private School Dubai, Dubai

Class : Class 6

Ans 3:

Hitanshi Behera from Loyola School , Bhubaneswar

Class : Class 4

actually it takes 365 days, 5 hrs,59 min and 16 sec

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Agastya Tripathi from dps gurgaon, Gurgaon

Subject :NSO Class : Class 4

Rohit threw a ball directly upwards. Which force would make the ball fall on the ground?

A Frictional force
B Gravitational force
C Muscular force
D Elastic force

the d option was not complete

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Ans 1:

SHAH HITANSH JINESH from S H KHARAWALA, AHMEDABAD

Class : Class 8

Very simple answer. Answer is:- B

Ans 2:

Ishan Boggarapu from NPS Whitefield, Bangalore

Class : Class 7

QQQQQQQQQQQQQQQQQQQWWWWWWWWWWWWEEERRRRRRRTTTTTTTTTTTTYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY

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AKSHITA DIXIT from R K SARDA VIDYA MANDIR, RAIPUR

Subject :NSO Class : Class 6

The given food items shown in the figure are rich in nutrient X.
Read the given statements regarding X.
(i) 1 gram of X gives 4 calories of energy.
(ii) It helps in protecting our body against diseases.
(iii) Deficiency of X results in diseases such as kwashiorkor and marasmus.
(iv) Test for X is done using Benedict's solution.
Which of the above given statements are correct?

(A) (i) and (iv)

(B) (i), (iii) and (iv)

(C) (ii) and (iii)

(D) None

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Vivan from Tathva International school, Tokyo

Subject :NSO Class : Class 7

Study the given flow chart carefully and select the option which is a correct match of xylem and phloem?

	Xylem	Phloem
A	P	R
B	R	S
C	S	R
D	Q	R

This is super weird...Where are the labels, P, Q, R and S?Could someone tell me where each label goes (If you know...)?

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Ans 1:

SOMDATTA BHATTACHARYA from Delhi Public School, Dhaligaon, Bongaigaon

Class : Class 5

SERIOUSLY ........TO BE TRUTHFUL I DO NOT UNDERSTAND THE QUESTION AT ALL . PLEASE EXPLAIN

Ans 2:

Suchita A from PSBB Millennium, Gerugambakkam, Chennai

Class : Class 7

I don't understand this question..............it makes no sense!!!

Ans 3:

Suchita A from PSBB Millennium, Gerugambakkam, Chennai

Class : Class 7

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