National Science Olympiad Forum By SOF Olympiad Trainer

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

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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:

Aarush from Podar, Mumbai

Class : Class 10

c

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:

Satvi Mohanty from Indira National School, Pune

Class : Class 6

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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.

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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.

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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

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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

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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

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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.

Submit Your Answers

Post Your Answer

Yasmeen Shaikh from Ryan International CBSE, Mumbai

Subject :NSO Class : Class 4

Study the given diagram carefully. The number represented by (?) is _______.

(A) 24

(B) 16

(C) 64

(D) 196
how come 16

View All Answers (5)

Ans 1:

Adithi Keshava from National Center For Excellence , Bangalore

Class : Class 7

Ans 2:

nitin loya from prabhat kids, Akola

Class : Class 4

easy but Brainny

Ans 3:

Bidusmita Rath from Sri Chaitanya Techno School, Bangalore

Class : Class 5

how to formulate such a complex Q: in exam....?

Ans 4:

Tarpan Pramanik from J.N.Academy, Berhampur

Class : Class 5

1.Actually the reason behind this is 10÷2*5=25 Now here 25 s square means 25*25= 625 2. In the same way in pattern ii, 9÷3*2=6 which is the square root of 36 3. According to this logic 8÷4*2=4 which is the square root of 16. So, the correct answer is option (b) 16