National Science Olympiad Forum By SOF Olympiad Trainer - Page 46

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MEGHNA SARKAR from Delhi Public School'Rubypark,Kolkata, Kolkata

Subject :NSO Class : Class 8

Count the number of circles in the given figure.

A 16
B 15
C 17
D 18

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MEGHNA SARKAR from Delhi Public School'Rubypark,Kolkata, Kolkata

Class : Class 6

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Anurag Dey from DPS Paradip, Paradip

Subject :NSO Class : Class 9

The kitchen of the cell is

A
B
C
D

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Anurag Dey from DPS Paradip, Paradip

Subject :NSO Class : Class 9

Read the following statement and select the option which correctly fills up the blank.
When a cell is put in a solution of higher concentration (i) occurs and the cell (ii).

A (i)-Endosmosis, (ii)-Swells
B (i)-Exosmosis, (ii)-Shrinks
C (i)-Endosmosis, (ii)-Shrinks
D (i)-Exosmosis, (ii)-Swells

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from ,

Class : Class 9

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Mahadevan from KV Rubber Board Kottayam, Kottayam

Subject :NSO Class : Class 9

A body is suspended from a spring balance kept in a satellite. The reading of the spring balance is W₁ when the satellite goes in an orbit of radius R and W₂ when it goes in an orbit of radius 2R. Which of the following is correct?

A W₁ = W₂
B W₁ < W₂
C W₁ > W₂
D W₁ ≠ W₂

w1 should be greater than w2 because here they are increasing R so w2 should be smaller

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Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 9

w1 should be greater than w2 because they are increasing R(distance) SO it should be Option C

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Mahadevan from KV Rubber Board Kottayam, Kottayam

Subject :NSO Class : Class 9

The density of a planet 1 is thrice that of planet 2. The acceleration due to gravity at the surface of planet 1 is (1/9)^th of that at the surface of planet 2. If the radius of planet 2 is R, then the radius of planet 1 will be

A R/3
B R/27
C 27R
D 81R

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Ans 1:

Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 9

Ans 2:

Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 9

Ans 3:

Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 9

Ans 4:

Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 9

Ans 5:

Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 9

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Mahadevan from KV Rubber Board Kottayam, Kottayam

Subject :NSO Class : Class 9

A dominant and independent haploid gametophyte alternating with a short lived dependent sporophyte is the characteristic of

A Marsilea
B Marchantia
C Pinus
D Hibiscus.

isnt pinus also a bryophyte?

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Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 9

isnt pinus also a bryophyte?

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arnav raj sharma from DPS Vasant kunj, delhi

Subject :NSO Class : Class 7

An electrical appliance is earthed to ________.

A Prevent the power supply from over loading
B Prevent the fuse from blowing
C Prevent the leakage of current and minimize the risk of electric shock
D Avoid excess current flowing through the appliance

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arnav raj sharma from DPS Vasant kunj, delhi

Subject :NSO Class : Class 7

Read the given statements and select the correct option.
Statement 1 : Cotton fibres are separated from the seeds by spinning.
Statement 2 : The process of separating jute fibres from the jute plant is called combing.

A Both statements 1 and 2 are true.
B Statement 1 is false but statement 2 is true.
C Statement 1 is true but statement 2 is false.
D Both statements 1 and 2 are false.

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Munna Dasgupta from Delhi world Public School, Agartala

Subject :NSO Class : Class 3

Which of the following figures will come next in the given figure pattern?

A
B
C
D

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Munna Dasgupta from Delhi world Public School, Agartala

Subject :NSO Class : Class 3

In how many different ways can monkey reach the tree?

A2
B5
C6
D4

Can you show the formula

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Munna Dasgupta from Delhi world Public School, Agartala

Class : Class 3

What is the formula of this question

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