National Science Olympiad Forum By SOF Olympiad Trainer

Arka Chakraborty from St. Patrick's Academy, Bengaluru, Bengaluru

Subject :NSO Class : Class 4

The graph shows Gaurav's marks for Mathematics. If Gaurav's total score was 336, how many more marks did he score in class test than in first term?

A 14
B 2
C 6
D 18

his marks in class test are not given. how can we find the answer ?

Ans 1:

Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 9

Ans 2:

Ibrahim Aslam from uttam, Ghaziabad

Class : Class 5

Ans 3:

Ibrahim Aslam from uttam, Ghaziabad

Class : Class 5

??????????????what?????????????????what???????????

Ans 4:

Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 9

question is wrong

Post Your Answer

Dev Narayan Vinu from St. Thomas Residential School, Thiruvananthapuram

Subject :NSO Class : Class 4

Name of some fibres can be obtained by using the letters given in the following box.

Which of the following objects CANNOT be made using only these fibres?

ARugs
BCurtains
CRaincoats
DBoth A and C

Is it D or C

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is C.

Ans 2:

Tejesh VB from GEMS New Millennium School, Al Khail, Dubai

Class : Class 8

Ans 3:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Class : Class 7

C

Ans 4:

niyati from kv 2, delhi

Class : Class 4

Post Your Answer

Kushagra Shukla from Presidium dwarka, New Delhi

Subject :NSO Class : Class 4

Which of these statements is INCORRECT?

ACranes used to lift loads use pulleys.
BA wedge is made up of two inclined planes.
CFork is an example of lever.
DScrew is used to lower and raise things.

HOW ARE SCREWS USED FOR RAISING AND LOWERING

Ans 1:

Ishan Kapilbhai Barochiya from Mayoor Private School , Abu Dhabi

Class : Class 8

no chairs also use screws to go up nd down

Ans 2:

Priyanka Dahiya from St. Theresa's senior secondary Convent school , Karnal

Class : Class 5

fork can be considered as both 'Lever' and 'wedge'. answer should be D.

Ans 3:

NIRMAY JOSEPH from St Columba's School, New Delhi , New Delhi

Class : Class 9

Ans 4:

AniAdi from Cambridge public school, Bangalore

Class : Class 5

Screw is used to fasten things and not really used to lower and raise things.. Isnt D incorrect too?

Ans 5:

Ayaansh Singhal from Pinewood School, Saharanpur

Class : Class 7

please give the master ans

Post Your Answer

Supreet Birdi from Global Indian International School, Bangalore

Subject :NSO Class : Class 4

Consider the following statements regarding carbon dioxide.

I .It is produced when an object is burnt.

II .It is consumed by living organisms during respiration.

III . It is released by green plants during photosynthesis.

Among the given statements,

Aonly I is incorrect
Bonly III is incorrect
Cboth I and II are incorrect
Dboth II and III are incorrect

Please explain

Ans 1:

OISHIK KUNDU from Delhi Public school North kolkata, baranagar

Class : Class 4

The ans will also be option B

Ans 2:

Aarush Bansal from PSBN, Bangalore

Class : Class 4

it is wrong answer

Post Your Answer

aritroray from Chirec International School, Hyderabad

Subject :NSO Class : Class 4

Which is the best representation of an insect?

(A)

(B)

(C)

(D)
Please explain.

Ans 1:

Satvi Mohanty from Indira National School, Pune

Class : Class 6

Ans 2:

Admin from Revisewise, Noida

Class : Class 3

All insects have there pairs of legs attached to the Thorax region. Hence answer C is correct

Ans 3:

Aarush from Podar, Mumbai

Class : Class 10

c

Post Your Answer

Aarush from Podar, Mumbai

Subject :NSO Class : Class 4

Which of the following activities is/are useful for the environment?

(i) Composting leaves

(ii) Recycling glass and paper products

(iii) Fertilizing a lawn garden every week

(A) (iii) only

(B) (i) & (ii)

(C) (ii) & (iii)

(D) (ii) only.
please tell the answer

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is B.

Post Your Answer

A Andrew from Lalaji Memorial Omega International School, Chennai

Subject :NSO Class : Class 4

Which out of the following tools can be used to measure quantity of water?

A
B
C
D

Ans 1:

Arkoprava Dey from Techno India Group Public School, Coochbehar, Coochbehar

Class : Class 9

answer is A

Ans 2:

AARUSH from DPS, Mumbai

Class : Class 4

C

Ans 3:

OISHIK KUNDU from Delhi Public school North kolkata, baranagar

Class : Class 4

Ans should be A not c, since the container can measure only one quantity like 5 ltrs , but option A can measure different amount of water.

Post Your Answer

A Andrew from Lalaji Memorial Omega International School, Chennai

Subject :NSO Class : Class 4

Which of the following is correct regarding the impact of deforestation?
(i) Plants of medicinal values found in the forest are lost.
(ii) Fewer trees are left around to hold the soil together, resulting in soil erosion.
(iii) Global warming occurs as there are fewer trees to absorb carbon dioxide.
(iv) The risk of an epidemic outbreak increases, resulting in the death of animals living in forests.

A (i) and (iv)
B (iii) and (iv)
C (i), (ii) and (iii)
D (i), (ii) and (iv)

i have a doubt

View All Answers (2)

Ans 1:

INDRANI GHOSH ROY from AMRITA VIDYALAYAM, Durgapur

Class : Class 5

No.C(i,ii,iii) are correct regarding deforestation.

Ans 2:

Kaushik J from san academy , Chennai

Class : Class 5

Submit Your Answers

Post Your Answer

A Andrew from Lalaji Memorial Omega International School, Chennai

Subject :NSO Class : Class 4

Select the correct option for energy changes taking place with respect to given figure.

A Light energy → Mechanical energy → Kinetic energy
B Light energy → Chemical energy → Kinetic energy
C Chemical energy → Light energy → Kinetic energy
D Mechanical energy → Kinetic energy → Light energy

i have a doubt

View All Answers (1)

Ans 1:

AARUSH from DPS, Mumbai

Class : Class 4

B

Submit Your Answers

Post Your Answer

Aarush from Podar, Mumbai

Subject :NSO Class : Class 4

Which of the following statements are correct?

(i) Safety means being careful and avoiding accidents only when walking on the road.

(ii) There are rules and signs for safety of people on the ship.

(iii) We must use footpath for walking and cyclists must keep to the left.

(iv) We must cross the road as we like anywhere and everywhere.

(A) (i), (ii), & (iii)

(B) (ii) & (iii)

(C) (iii) & (iv)

(D) (i) & (iii)

View All Answers (1)

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is B.

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