National Science Olympiad Forum By SOF Olympiad Trainer - Page 336
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RICHA BORAH from K V ANNA NAGAR, CHENNAI
Subject :NSO    Class : Class 6

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RICHA BORAH from K V ANNA NAGAR, CHENNAI
Subject :NSO    Class : Class 6

Ans 1:

Satvik Pattanaik from GreenwoodHigh, bangalore
Class : Class 6

Ans 2:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
A

Ans 3:

Aadhira from velammal new gen school, Medavakkam, Chennai
Class : Class 6
The correct answer is (A).

Ans 4: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A

Jute is a fibre obtained from stem of jute plant. Jute is harvested during flowering stage. The stems are cut off close to the ground and are left to dry for sometime. Dried stems are then tied into bundles and soaked in water for about 20 days. This process is called retting. It softens the tissue and permits the fibres to be separated.

 


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Nandini Mahajan from Salwan Public School, Gurgaon
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

The food-chain is starting with X. That means X is a plant (Producers). X is eaten by Y. So, Y must be a Herbivore (for example, animals like deer, rabbit, goat, etc.). And Y is eaten by Z. So, Z must be Carnivore (for example, animals like wolf, lion, hyena, etc.).


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Ankit kumar Jha from Ryan International School , Ghaziabad
Subject :NSO    Class : Class 8

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jeet from Indian School Sohar, Sohar, Oman, Sohar
Subject :NSO    Class : Class 8

Ans 1:

Ayush Behera from sunbeam engkish school, bhagwanpur, Varanasi
Class : Class 4

Ans 2:

midhuna from ABCD, Hyderabad
Class : Class 8
BHC is also a pesticide the answer is Dgammaxane too is a pesticide from olympiad prep guide bookpls correct your mistake or if i am wrong give a proper solution

Ans 3:

Ayush Chauhan from Modern Public School, Bhiwadi
Class : Class 9

Ans 4:

Pushkar Sonnekar from Ryan International School, Mumbai, Vasai East
Class : Class 8
But shouldn't it be option C, as 2 and 4 D are fertilizers.

Ans 5:

Rushil from Delhi Public School, Nashik
Class : Class 10
It should be option C because 2 4-D is a pesticide

Ans 6:

sankalp from Gyan Bharti School, Saket, Delhi
Class : Class 10
MCPA is a weedicide, so it should not be A

Ans 7:

midhuna from ABCD, Hyderabad
Class : Class 8

Ans 8:

cherry from atomic energy central school-4, mumbai
Class : Class 9
shouldnt the answer be a? simazine is also a pesticide

Ans 9:

Venya from CHIREC International, Hyderabad
Class : Class 9

Ans 10:

Shaurya Veer from Army Public School ASC C and C , Bangalore
Class : Class 10
The answer should be c as that is the only one that has 2,4D as it's option also the SOF solution says the same but shows a different answer

Ans 11:

midhuna from ABCD, Hyderabad
Class : Class 8
2 4 -D is a weedicide literally given in ncert too

Ans 12:

A Venkata Sai Pranav from Podar International School, Bhusawal
Class : Class 9
It should be C

Ans 13:

Ayush Behera from sunbeam engkish school, bhagwanpur, Varanasi
Class : Class 4
Simazine is pesticde! The answer must be A

Ans 14:

Soham from Vibgyor high, Pune
Class : Class 8

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Aryan from Ihs, Karama
Subject :NSO    Class : Class 9

Ans 1:

Necro from New Tulip international school, Ahmedabad
Class : Class 10

Ans 2:

Necro from New Tulip international school, Ahmedabad
Class : Class 10
Isnt it A?

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Ankit kumar Jha from Ryan International School , Ghaziabad
Subject :NSO    Class : Class 8

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Agriye Kamboj from ST.XAVIER SEC SE CO ed Bhopal, BHOPAL
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C

 In the life cycle of butterflies etc., egg hatches to produce a young one called a larva which looks like a worm. After some days, it changes into pupa which finally turns into an adult.


Ans 2:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8

Ans 3:

Yashraj Namdev Deshmukh from Sahyadri English School, Loha, Nanded
Class : Class 7
C)

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Ishan Chavan from National Public School Chikkabanavara, Bengaluru
Subject :NSO    Class : Class 3

Ans 1:

Anaahad Mehar Satsangi from Delhi Public School Agra, Agra
Class : Class 3
b

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Blood, Heart and Blood vessels are all parts of the Circulatory system. Similarly, Kidneys, Lungs and Skin are organs of Excretory system.


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Ishan Chavan from National Public School Chikkabanavara, Bengaluru
Subject :NSO    Class : Class 3

Ans 1:

Shubhra from DPS, Haridwar
Class : Class 5

Ans 2:

om goyal from rainbow school, saharanpur
Class : Class 3

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Option A and C has correct statements and option B has incorrect statement. Bird Y can fly. It can be woodpecker, which has feet similar to parrot. Bird X can fly as well as swim. It cannot be the black and white coloured bird found at poles, as it cannot fly.Bird Z runs fast. It can be ostrich that lays largest egg in the world.

 


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