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

User Forum

Ask Your Question
Atulya tripathy from Delhi Public School, sector 45, Gurgaon
Subject :NSO    Class : Class 5

Post Your Answer

Shriya Subeerya from Indira National School, Pune
Subject :NSO    Class : Class 7

Refer the given figure of human digestive system and select the option which correctly answer the questions that follow.

i The inner lining of which of the labelled parts secretes mucus and hydrochloric acid?
ii Juice secreted from which of the labelled parts breaks down fats completely into fatty acids and glycerol?
iii The food that remains undigested and unabsorbed passes into which of the labelled parts?

A i - P, ii - Q, iii - S
B i - P, ii - R, iii - S
C i - R, ii - P, iii - Q
D i - Q, ii - R, iii - P

Ans 1:

Archi Mangla from Mohters Global School, Dehi
Class : Class 7
it is option a

Ans 2:

Aditya kumar from Sapphire International School, Noida
Class : Class 8
its option "a" because stomach ("p") secretes HCL and (digestive juice) pepsin , bile is produed in liver (q) by gall bladder and large intestine (r) absorb water and pases semi-solid feaces into rectum

Ans 3:

SumedhPrabhudesai from Dr. K B Hedgewar High School, Panaji
Class : Class 7
A) i - P, ii - Q, iii - S

Ans 4:

Dhruvan G from Indian School Al Ghubra, Muscat
Class : Class 8
It's option A

Ans 5:

RAHUL S ROY from ST.XAVIERS HIGH SCHOOL,VAPI, VAPI,GUJARAT
Class : Class 7
option a is the right ans

Ans 6:

Aaqil Parvez from Al-Fajr International School, Chennai
Class : Class 7
option a

Ans 7:

Gyanajyoti Mishra from J.N.V., Jajpur
Class : Class 10
option c

Ans 8:

Gyanajyoti Mishra from J.N.V., Jajpur
Class : Class 10
option A

Ans 9:

Aparajita from Mount Litera Zee School, Vasco da gama
Class : Class 8
Option A

Post Your Answer

Bhagya from Cchs, Jaipur
Subject :NSO    Class : Class 6

Ans 1:

SRABONI MUKHERJEE from KRISHNA PUBLIC SCHOOL NEHRU NAGAR, Bhilai
Class : Class 9
Ans. - D

Post Your Answer

Bhagya from Cchs, Jaipur
Subject :NSO    Class : Class 6

Ans 1:

Akshat Iyer from Sri Kumaran Children's Home, Bengaluru
Class : Class 7
c

Ans 2:

Ashi Goyal from Sacred heart convent school,raikot road,barnala, punjab
Class : Class 6
b

Ans 3:

Nandini from Ins, Pune
Class : Class 8

Ans 4:

Arsh Gupta from Cambridge International School, Jalandhar
Class : Class 6
b

Post Your Answer

Bhagya from Cchs, Jaipur
Subject :NSO    Class : Class 6

There are two mixtures P and Q with the following compositions.
The components of P mixture are separated by technique I while for Q mixture, technique II is used as shown in the figures.
Select the correct statement among the following.


A If more of X is dissolved in Y, then a saturated solution is formed.
B Z and Y can also be separated by sedimentation and decantation.
C Y is a common solid particle in both the mixtures.
D If a mixture of X and Z is formed, then more than one method is used to separate the components.


Post Your Answer

aritroray from Chirec International School, Hyderabad
Subject :NSO    Class : Class 4

Ans 1:

from Indira National School, Pune
Class : Class 5

Ans 2:

Admin from Revisewise, Noida
Class : Class 3
All insects have there pairs of legs attached to the Thorax region. Hence answer C is correct

Ans 3:

Aarush from Podar, Mumbai
Class : Class 7
c

Post Your Answer

Bhagya from Cchs, Jaipur
Subject :NSO    Class : Class 6

Ans 1:

Sharmi Chowdhury from G.D Birla Centre For Education , Kolkata
Class : Class 7
Answer is not C because weight of anobject can be zero, but mass remainsconstant.

Ans 2:

Kanishk Mukherjee from BDM International, Kolkata
Class : Class 6

Ans 3:

Saurabh from Global Indian international school, Singapore
Class : Class 7
it is either b or c .

Ans 4:

Shweta Garg from apeejay school noida, Ghaziabad
Class : Class 3

Ans 5:

Kushal from Chirec, Hyderabad
Class : Class 7
the answer is c

Ans 6:

Deeptajit Roy from Gems Modern Academy, Dubai
Class : Class 7
actually the astronauts just FEEL weightless, they actually are in freefall but since the gravity is really weak nobody notices.

Ans 7:

Arsh Gupta from Cambridge International School, Jalandhar
Class : Class 6
the answer can both b and c but a is impossible please give the right solution

Ans 8:

Akash Mukhoti from Pawar Public School, Chandivali, Mumbai
Class : Class 7

Ans 9:

Hrithik Peddireddy from Oakridge International School, Hyderabad
Class : Class 6
it cannot be B because mass is how much matter an object has and if something had 0 mass, it would be non - existent

Ans 10:

Ahan Biswas from National Public School, Bangalore
Class : Class 7
The answer should be option b , no gravity

Ans 11:

Niraj s chapte from sri ma, thane
Class : Class 6
A

Ans 12:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Class : Class 7
Thanks deeptajit Roy

Ans 13:

Saurabh from Global Indian international school, Singapore
Class : Class 7

Ans 14:

Prajith Kumaran from RCIS, Bangalore
Class : Class 7

Ans 15:

chittaranjan kar from MLZS, Jaipur
Class : Class 3
Ans should be B.

Post Your Answer

Bhagya from Cchs, Jaipur
Subject :NSO    Class : Class 6

Post Your Answer

Bhagya from Cchs, Jaipur
Subject :NSO    Class : Class 6

Post Your Answer

Bhagya from Cchs, Jaipur
Subject :NSO    Class : Class 6

Ans 1:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
Length of a ribbon she cut is 18m(6×3).so the answer is B (x-18)cm.

Post Your Answer