National Science Olympiad Forum By SOF Olympiad Trainer

Yuven Kumar from Bonsan International School, bangalore

Subject :NSO Class : Class 4

Study the given relationship and select the option that satisfies the same relationship.

A Coriander : Spinach : : Radish : Turnip
B Chickpea : Sugarcane : : Ginger : Turmeric
C Lettuce : Cabbage : : Broccoli : Potato
D Basil : Cauliflower : : Onion : Zamikand

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Prabhav Priyash Panda from Atomic Energy Central School, Narora, Bulandhshahr

Subject :NSO Class : Class 6

The given figures show particles of the same matter.
In which picture is the matter coldest?

A
B
C
D

How

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Ans 1:

rachit jha from dps, vadodara

Class : Class 6

bla moye bla moye

Ans 2:

Jyotsna from Prakriya, Bangalore

Class : Class 6

Option C

Ans 3:

Vibha Chougule from RMDIS, Pune

Class : Class 7

option C

Ans 4:

Shreyasi Padihary from The Cambridge International School , Bangalore

Class : Class 7

Particles contract (come close or stick) when the temperature is low. In Option C they particles have contracted the most (compared to other options) so, it is the coldest. Thus, the correct answer to this question is Option C

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Vedha from Delhi Public School Indirapuram, Delhi

Subject :NSO Class : Class 9

Refer to the given figure and select the correct statement regarding it.

A P is selectively permeable whereas S is freely permeable to small molecules.
B Q contains the green pigment molecules and is the site of dark reaction during photosynthesis.
C R is a green coloured, agranular substance where dark reaction takes place during photosynthesis.
D R is the site of dark reaction whereas Q is the site of light reaction during photosynthesis.

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Ram K from Sanskriti, Hyderabad

Subject :NSO Class : Class 8

A floor has a maximum loading capacity of 5 kN m^-2. Which of the following is allowed on this floor? (Take g = 10 N kg^-1)

AAn elephant weighing 50 kN stands on 4 legs with each foot covering 4000 cm² of the floor.
BA 50 kg lady wears a pair of high heel shoes, each shoe has a contact area of 9 cm² with the floor.
CA 100 kg washing machine stands on a surface area of 6500 cm².
DA designer's table weighing 1000 N stands on 3 legs, each leg has a contact area of 0.1 cm² with the floor.

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Ashni Pandey from st. Anselm pink City school , jaipur

Subject :NSO Class : Class 3

Which of the following best shows the revolutions of Earth and Moon around Sun and Earth respectively?

A
B
C
D

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Ans 1:

Mantra Dusara from Vibgyor High, Pune

Class : Class 3

A

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Advika Behera from Sardar Patel Vidyalaya, New Delhi , New Delhi

Subject :NSO Class : Class 7

The given graph shows measurements of different types of blood vessels P, Q and R. Select the incorrect statement regarding these vessels.

ABlood vessels of type P have valves.
BBlood vessels of type Q distribute blood from the heart to different parts of the body.
CR represents a capillary which forms an artery and it has thick walls.
DAll of these

hi

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Tviesha Dayalani from Bhavans' Rajaji Vidyashram, chennai

Subject :NSO Class : Class 7

The given diagram shows a prism whose one surface is reflecting. Now consider different angles given in column I and corresponding values in column II. Match column I with column II and select the correct option from the given codes.

AP - (i), Q - (ii), R - (iii), S - (iv)
BP - (ii), Q - (i), R - (iii), S - (iv)
CP - (i), Q - (iv), R - (ii), S - (iii)
DP - (ii), Q - (iv), R - (i), S - (iii)

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Yuvrraj Surana from Witty Internatinal Schol, Udaipur

Subject :NSO Class : Class 4

The given figure shows layers of Earth. Select the correct statement regarding it.

AP and Q are liquid layers.
BLayer above R is called crust.
CLayer S makes up most of the total Earth’s volume.
DAll of these

b

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Ans 1:

Yuvrraj Surana from Witty Internatinal Schol, Udaipur

Class : Class 4

B

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Ashish Kumar Yadav from Sandeepani Ganj kunj , Samsaraj

Subject :NSO Class : Class 6

Different types of sheets are placed between Nisha, Sahil, Ankit and Ruby.
Sheets Q and S allow light to pass through them. Sheets P and R are opaque. Select the incorrect statement among the following.

A Nisha cannot see Sahil.
B Sahil can see Ankit.
C If sheet S is removed then Ruby cannot see Ankit.
D Ankit can see Nisha.

Answer

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Ans 1:

Jyotsna from Prakriya, Bangalore

Class : Class 6

Ankit cannot see Nisha because sheet P, which is in his way, is opaque

Ans 2:

Samanvi Sathyajith from Indian school sohar, Oman

Class : Class 6

The answer is option D

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Sarthak Khanna from GAGAN BHARTI SCHOOL, West Delhi

Subject :NSO Class : Class 6

Study the given table carefully and select the correct option.

A Only air, paper and steel are listed incorrectly.
B Only paper is listed incorrectly.
C Only air, butter paper and wood are listed incorrectly.
D Only glass, water and iron are listed incorrectly.

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Ans 1:

Jyotsna from Prakriya, Bangalore

Class : Class 6

Option A is correct because air is transparent, paper is translucent, and steel is opaque

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