National Science Olympiad Forum By SOF Olympiad Trainer
  1. Home
  2. /  Forum

User Forum

Ask Your Question
anindeeta78@gmail.com from nk bagrodia global school, New Delhi
Subject :NSO    Class : Class 5

Which of these is true about the speed of sound through solids, liquids and gases?
           Solid                    Liquid            Gas
ASlow                     Faster          Fastest
BAverage speed    Fastest          Slowest
CSlowest                Fastest         Average speed
DFastest                 Slower         Slowest


explanation

Ans 1:

Ali Hussain from Delhi Private School Dubai, Dubai
Class : Class 6
how atmosphere(the medium of sound we normally use) tell sound faster or in waterP.S it is showing ans d

Post Your Answer

A Andriya from Lalaji Memorial Omega International School, Chennai
Subject :NSO    Class : Class 4

Post Your Answer

A Andriya from Lalaji Memorial Omega International School, Chennai
Subject :NSO    Class : Class 4

Read the given statements and select the correct option.
Statement 1 : Snake and crocodile are cold blooded animals.
Statement 2 : Snake and crocodile breathe through moist skin.

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

Ans 1:

RHETAMA DAS from Usha Martin school,Malda, MALDA
Class : Class 3
Through dry skin

Ans 2:

Parmanyu from Learning paths school, Mohali
Class : Class 5
How do snakes and crocodiles breathe then?

Post Your Answer

A Andriya from Lalaji Memorial Omega International School, Chennai
Subject :NSO    Class : Class 4

Ans 1:

Nandiniashok from St. pauls English school , Bengaluru
Class : Class 4
Pls send the correct answer and explanation.

Post Your Answer

Tushar from DPS, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Kushal from Chirec, Hyderabad
Class : Class 7

Ans 2:

Tushar from DPS, Bengaluru
Class : Class 9
Correct option is D.

Post Your Answer

anindeeta78@gmail.com from nk bagrodia global school, New Delhi
Subject :NSO    Class : Class 5

Read the given statements and select the correct option.
Statement 1: Digestion and blood circulation are some voluntary actions of our body.
Statement 2: Voluntary actions are the actions which are not under human control.

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


need a clear expalanation

Post Your Answer

DRAVIT GUPTA from Mother's Global School, New Delhi
Subject :NSO    Class : Class 9

Ans 1:

Gh from Mahatma, Ghaziabad
Class : Class 10
I think it should be 7GM^2/256R^2 G is constant. M will become 7M/8 due to mass removal .M2 will be M/8 . Distance is 2 R . So the product is equivalent to the above. But I don't know how it is not in answers

Ans 2:

divanshi from sacred heart convent school, barnala
Class : Class 9
this need more details as the question is not clear

Ans 3:

Adwyth G Nair from Chinmaya Vidyalaya Tripunithura, Kochi
Class : Class 10
i think the above explanation is good and would be more accurate if shft of centre of mass is calculated

Ans 4:

pratham from Indian School Ghubra, Muscat, Muscat
Class : Class 7
I agree with Gh from Mahatma, Ghaziabad, options are not correctly provided in the question.

Post Your Answer

DRAVIT GUPTA from Mother's Global School, New Delhi
Subject :NSO    Class : Class 9

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is D.

Post Your Answer

DRAVIT GUPTA from Mother's Global School, New Delhi
Subject :NSO    Class : Class 9

Ans 1:

Harsh Gupta from AECS Narora, Narora
Class : Class 9

Ans 2:

Soumyaranjan Nath from Delhi Public School , Angul
Class : Class 10
how

Ans 3:

Harsh Gupta from AECS Narora, Narora
Class : Class 9

Post Your Answer

DRAVIT GUPTA from Mother's Global School, New Delhi
Subject :NSO    Class : Class 9

Ans 1:

from kv2, kalpakkam
Class : Class 9
i dont know the answer to this question \

Ans 2:

ashishlal2003 from dps east, bangalore
Class : Class 9
why doesn't anyone answer?

Post Your Answer