National Science Olympiad Forum By SOF Olympiad Trainer

Vivek Gulavani from Innisfree House School, Bengaluru

Subject :NSO Class : Class 6

Which one of the following statements is true?

AA concentrated solution has a small amount of solute dissolved in a large amount of solvent.
BA dilute solution has a small amount of solute dissolved in a small amount of solvent.
CA dilute solution has a small amount of solute dissolved in a large amount of solvent.
DA concentrated solution has a large amount of solute dissolved in a large amount of solvent.

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Vivek Gulavani from Innisfree House School, Bengaluru

Subject :NSO Class : Class 6

Rohit heated four beakers as shown below :

The correct order of evaporation of water is

AII > I > IV > III
BI > IV > II > III
CIV > I > III > II
DI > II > IV > III

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Ans 1:

Tushar from DPS, Bengaluru

Class : Class 9

The correct answer is Option (B.)I>IV>II>III.

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Vivek Gulavani from Innisfree House School, Bengaluru

Subject :NSO Class : Class 6

Take boiled potatoes, french fries, raw potatoes, fried potatoes. If you are on a low fat diet, which type of potatoes would you eat?

ABoiled potatoes
BFrench fries
CRaw potatoes
DFried potatoes

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KRISHAV RASTOGI from ST PAUL SCHOOL, RAWATBHATA

Subject :NSO Class : Class 6

Figure shows a measuring cylinder with different levels of water before and after the immersion of an irregular solid object.

The volume of the object is

A 82 cm³
B 12 cm³
C 30 cm³
D 18 cm³

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ATHARV PRASAD from Delhi Public School , Noida

Subject :NSO Class : Class 3

Which of the following is a star ?

(A) b-12.eps

(B) b-13.eps

(C) b-11.eps

(D) b-14.eps

Your site is not working properly. I chose option 'c' and your site is saying that I chose option 'b'.

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Ans 1:

from ,

Class :

C . Sun is also a star. Its the closest star to earth.

Ans 2:

Kaustubh rao from Alpha wisdom vidyashram, Trichy

Class : Class 5

The answer is C: Sun is also a star.

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Pragya Mahajan from BCM Arya Model Sr Sec School, Ludhiana

Subject :NSO Class : Class 6

Read the given statements and select the correct option.
Statement 1 : Fibres are first spun into yarns, which are then woven or knit into fabrics.
Statement 2 : Fibres are very thin and small and cannot be made into a fabric directly.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Both statements 1 and 2 are false

isn't the ans c

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Anushka from DPS Gandhinagar , Gandhinagar

Subject :NSO Class : Class 6

Which of the following are non-periodic changes?
I. Sunrise and sunset
II. Growth of plants
III. Occurrence of a rainbow
IV. Beating of heart

AII and III only
BII and IV only
CI and IV only
DAll of these.

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Ans 1:

Pragya Mahajan from BCM Arya Model Sr Sec School, Ludhiana

Class : Class 8

the ans. is a

Ans 2:

Admin fly from Ddssxxx, Ax

Class : Class 1

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Swati from Ryan, Bengaluru

Subject :NSO Class : Class 7

Which figure correctly represents the process of sublimation?

A
B
C
D

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Ans 1:

Samay Roy from delhi public school, ahmedabad

Class : Class 9

D

Ans 2:

KISHORE KUMAR E from MAHARISHI INTERNATIONAL RESIDENTIAL SCHOOL, SUNGUVARCHATHIRAM

Class : Class 9

Answer D LOOSELY PACKED -GAS AVERAGELY PACKED- LIQUID CLOSELY PACKED -SOLID Sublimation is a process by which a solid is directly converted to a gas. SOLID -->>GAS CLOSELY PACKED-> LOOSELY PACKED

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gunu from kendriya vidyalya no1, Cuttack

Subject :NSO Class : Class 5

A beaker of iced water was heated until it boiled. It was then left to cool to room temperature. The temperature of the water was taken at intervals of four minutes and the results were used to draw the graph as shown in the given figure. Approximately how long did the boiling water take to cool to room temperature ?