National Science Olympiad Forum By SOF Olympiad Trainer

Hridhaan from The Khaitan School, Noida

Subject :NSO Class : Class 2

If 'white' is called 'black', 'black' is called 'purple' and 'purple' is called 'red', then what is the color of milk?

AWhite
BBlack
CRed
DPurpal

white->black->purple->red ... so milk white = red . Please explain milk white = black answer given

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(B)

The colour of milk is white. And white is called black. That means colour of milk is Black.
Hence, the right answer is Option B.

Ans 2:

JAI from BHS, Bangalore

Class : Class 6

in the downloadable pdf of this mock test, answer mentioned is red which also looks ok as white is black, black is purple, purple is red.

Ans 3:

JAI from BHS, Bangalore

Class : Class 6

can admin please confirm which one is correct?

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AKSHAJ SRIVASTAVA from MOUNT LITERA ZEE SCHOOL, Kanpur

Subject :NSO Class : Class 3

If you send a photograph through e-mail from India to your friend in Japan, how long will it take to reach?

AA few seconds
BA few minutes to an hour
CA few days to a week
DA few weeks to a month

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

A

Electronic mail (email or e-mail) is a method of exchanging messages ("mail") between people using electronic devices. It is very fast and ideally takes only a few seconds to reach the receiver.

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AKSHAJ SRIVASTAVA from MOUNT LITERA ZEE SCHOOL, Kanpur

Subject :NSO Class : Class 3

Which of these actions requires pull force only?

A
B
C
DNone of these

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

A

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SIDDHARTH SOMANI from Vibgyor High, Mumbai

Subject :NSO Class : Class 3

Which animals given in the table have been classified INCORRECTLY?

AAnt and Eel
BSea lion and Eel
CEel and Bat
DSea lion and Bat

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

D

Sea lion is not a fish, it is a mammal. Bat is not a bird, it is also a mammal.

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Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon

Subject :NSO Class : Class 3

The given graph shows the temperature change during a food preservation method. Identify it and select the correct option.

AThis method includes adding excess common salt to food.
BThis method includes adding excess sugar to food.
CThis method includes removing all the moisture from food.
DNone of these

c is the correct option

View All Answers (4)

Ans 1:

Khanak Kapadia from Anand Vidya Vihar, Vadodara

Class : Class 5

Ans 2:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon

Class : Class 7

c is the correct answer

Ans 3:

Anunnakee Banerjee from BBPS NOIDA, NOIDA

Class : Class 7

D is the correct answer because according to the graph time is increasing and the food is becoming colder

Ans 4:

AADYA TANDON from DPS NOIDA SEC-30, Noida

Class : Class 5

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ICHALKARANJI from dkte, ichalkranji

Subject :NSO Class : Class 9

A large truck and a car, both moving with a velocity of magnitude v, have a head-on collision and both of them come to halt after that. If the collision lasts for 10 s then
(i) The car will experience the greater force of impact exerted by the truck
(ii) The truck will experience the greater momentum change
(iii) Car will experience the greater average acceleration than truck.

A Only (i) and (ii) are correct.
B Only (ii) and (iii) are correct.
C Only (iii) and (i) are correct.
D All (i), (ii) and (iii) are correct.

please give solutions of the qustions

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Ans 1:

Arnav Ranka from Gyan Bharati School, Saket, New Delhi

Class : Class 9

Only (iii) is correct, as both will experience same change in momentum and forces exerted are equal

Ans 2:

Aryan from Ihs, Karama

Class : Class 9

PLEASE CAN YOU SEND THE DETAILED SOLUTION FOR THE GIVEN QUESTION.

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Aarav Arya from Delhi Public School, Navi Mumbai

Subject :NSO Class : Class 7

In a row of 35 boys, A is fifteenth from the left end. If C is just to the left of A, then find the position of C from the right end.

A20^th
B21^st
C22^nd
D23^rd

HOW?

View All Answers (2)

Ans 1:

Isha Fathima from Indian school salalah, SALALAH

Class : Class 4

the ans is a

Ans 2:

Rishab from OWS, New Delhi

Class : Class 7

Yeah

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Aarav Arya from Delhi Public School, Navi Mumbai

Subject :NSO Class : Class 7

In plants, the same set of pipe-like vessels transport water, minerals and food. Do you agree?

AYes, pipe-like vessels are xylem and phloem and both transport water, minerals and food.
BYes, pipe-like vessels called xylem and phloem are interconnected.
CNo, pipe-like vessels are xylem and phloem; xylem transports water and minerals while phloem transports food.
DNo, pipe-like vessels are xylem and phloem; xylem transports food while phloem transports water and minerals.

I do not agree with your answer