National Science Olympiad Forum By SOF Olympiad Trainer - Page 70
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Punya Paras Sundrani from Anand Niketan , Ahmedabad
Subject :NSO    Class : Class 6

Ms Naina, a science teacher divided the class into four groups and each group was given different mixtures :
Group I : Sand and iron filings
Group II : Oil and water
Group III : Salt and sand
Group IV : Wheat and husk
Which of the following methods should each group use to separate the components of mixtures given to them?

Group I Group II Group III Group IV
A Magnetic
separation		 Seprating
funnel		 Filtration
followed by
evaporation		 Winnowing
B Sieving Filtration Winnowing Sieving
C Winnowing Decantation Sieving Filtration
D Magnetic
separation		 Filtration Sieving Winnowing


Post Your Answer

rethish from Veltech, Avadi
Subject :NSO    Class : Class 7

Read the given paragraph.
X, Y and Z are three methods of waste management. X requires action of biological agents whereas Y and Z are chemical processes. Both X and Y reduce the waste volume whereas Z makes the waste reusable.
Which of the following is incorrect regarding X, Y and Z?

AX enriches the soil with nutrients and helps in recycling of matter between living organisms and their environment.
BY generates gases and heat energy and is best suited for disposing toxic waste.
CZ increases the demand and supply of fresh raw material and causes air and water pollution.
DSaprophytes and detritivores play a major role in X.


Post Your Answer

Aarav Kalia from Apeejay School, Pitampura, Delhi
Subject :NSO    Class : Class 9

Post Your Answer

Amlan choudhury from GD Birla center for education , Kolkata
Subject :NSO    Class : Class 7

Post Your Answer

SOMDATTA BHATTACHARYA from Delhi Public School, Dhaligaon, Bongaigaon
Subject :NSO    Class : Class 9

Post Your Answer

from ,
Subject :NSO    Class : Class 1

Post Your Answer

Ashwath Ramkumar from D.A.V School Adambakkam, Chennai
Subject :NSO    Class : Class 7

Post Your Answer

Anushka Kotecha from St Anns School, Beed
Subject :NSO    Class : Class 1

Ans 1:

Abhigyan Panda from INDIA INTERNATIONAL SCHOOL, ASANSOL , ASANSOL
Class : Class 3

Ans 2:

Abhigyan Panda from INDIA INTERNATIONAL SCHOOL, ASANSOL , ASANSOL
Class : Class 3
6 A

Ans 3:

Abhigyan Panda from INDIA INTERNATIONAL SCHOOL, ASANSOL , ASANSOL
Class : Class 3

Ans 4:

Abhigyan Panda from INDIA INTERNATIONAL SCHOOL, ASANSOL , ASANSOL
Class : Class 3
ANS 4

Ans 5:

Abhigyan Panda from INDIA INTERNATIONAL SCHOOL, ASANSOL , ASANSOL
Class : Class 3
D IS THE CORRECT ANSWER

Ans 6:

Abhigyan Panda from INDIA INTERNATIONAL SCHOOL, ASANSOL , ASANSOL
Class : Class 3
D is the CORRECT ANSWER

Post Your Answer

DEVAANGANA SARDAR from G.D. Birla Centre for Education, Kolkata
Subject :NSO    Class : Class 5

Post Your Answer

Aniket Nagane from Elpro International School Chinchwad, Pune
Subject :NSO    Class : Class 5

Post Your Answer