National Science Olympiad Forum By SOF Olympiad Trainer - Page 215
  1. Home
  2. /  Forum

User Forum

Ask Your Question
cherry from atomic energy central school-4, mumbai
Subject :NSO    Class : Class 8

Post Your Answer

Ishani Poddar from Vibgyor High Horamavu, Benagluru
Subject :NSO    Class : Class 2

Post Your Answer

cherry from atomic energy central school-4, mumbai
Subject :NSO    Class : Class 8

Ans 1:

cherry from atomic energy central school-4, mumbai
Class : Class 9
shouldn't the no of trees remain the same? it is not mentioned if we are planting more trees

Ans 2:

sankalp from Gyan Bharti School, Saket, Delhi
Class : Class 10
Yes we are not planting more trees. A should be the correct

Ans 3:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8
Isn't it C?

Post Your Answer

mahati from Delhi public school, Hyderabad
Subject :NSO    Class : Class 2

Post Your Answer

Raghav Mittal from DAV Public School, ludhiana
Subject :NSO    Class : Class 8

Post Your Answer

ritvik bihari from Vibgyor High School, pune
Subject :NSO    Class : Class 7

Post Your Answer

Sarthak Mittal from G.P. International School, Bharatpur
Subject :NSO    Class : Class 9

Post Your Answer

Prasanna Hegde from Vibgyor High Horomavu, BENGALURU
Subject :NSO    Class : Class 3

Post Your Answer

Ayush Aryan from Modern public school , North West Delhi
Subject :NSO    Class : Class 8

Ans 1:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8
Should it be d??

Ans 2:

Rushil from Delhi Public School, Nashik
Class : Class 10
The answer should be (A) because Urea is an acid and contains high amounts of Hydrogen and Nitrogen. It is also considered as a fertilizer because fertilizer is an acid just like urea and also fertilizer contains high amounts of hydrogen and nitrogen. Fertilizer also allows the maximum plant-growth. So, it should be (A).

Ans 3:

Soham from Vibgyor high, Pune
Class : Class 8
It should be D as both manure and fertiliser have nutrients

Ans 4:

sankalp from Gyan Bharti School, Saket, Delhi
Class : Class 10
Fertilizer can be both acidic or basic. Some fertilizers have Urea, Ammonium Nitrate as constituents due to which they are acidic. However salts of Potassium such as Potassium Nitrate and Phosphate are also used that are strong bases.

Ans 5:

Sumedha Mishra from xyz, School, Pune
Class : Class 8

Ans 6:

sankalp from Gyan Bharti School, Saket, Delhi
Class : Class 10
As per the activity mentioned in NCERT and my own research, the most appropriate answer should be A, because fertilizers boost plant growth and are nutrient specific, meaning they replenish the nutrients.

Ans 7:

sankalp from Gyan Bharti School, Saket, Delhi
Class : Class 10

Ans 8:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
should be option d

Ans 9:

Nimish shah from Chrysalis high , Banglore
Class : Class 8
a

Ans 10:

Nimish shah from Chrysalis high , Banglore
Class : Class 8

Ans 11:

Ahdiya Sharik from St Thomas public school, Trivandrum
Class : Class 8

Post Your Answer

noah farias from beacon high, Mumbai
Subject :NSO    Class : Class 2

Post Your Answer