National Science Olympiad Forum By SOF Olympiad Trainer - Page 292
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jeet from Indian School Sohar, Sohar, Oman, Sohar
Subject :NSO    Class : Class 8

Ans 1:

Venya from CHIREC International, Hyderabad
Class : Class 9

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

sankalp from Gyan Bharti School, Saket, Delhi
Class : Class 9
MCPA is a weedicide, so it should not be A

Ans 6:

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 7:

midhuna from ABCD, Hyderabad
Class : Class 8

Ans 8:

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

Ans 9:

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

Ans 10:

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 11:

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

Ans 12:

Soham from Vibgyor high, Pune
Class : Class 8

Ans 13:

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

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

Read the given statements and select the correct option.
Statement 1 : A man carrying a bucket of water and walking on a rough level road with a uniform velocity does no work while carrying the bucket.
Statement 2 : The work done on a body by a force (F) in giving it a displacement (S) is defined as W = . = FS cos , where is the angle between vectors and .

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true 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.


Please give the solution

Ans 1:

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

Ans 2:

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

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

The given figure represents the location of various endocrine glands in human body.

Identify the glands marked as P, Q, R, S and T and select the incorrect statement regarding these.

A Gland P secretes the hormone thyroxine, which regulates growth and metabolism.
B Gland Q secretes the hormones corticosteroids and adrenaline, which regulate breathing, heart rate, carbohydrate metabolism and mineral balance.
C Glands S and T secrete the hormones which control secondary sexual characters in females and males respectively.
D Gland R secretes the hormone insulin, whose increased concentration leads to diabetes.


i think b and d both are correct

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

Ans 1:

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

Ans 2:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8

Ans 3: (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.


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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: (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.

 


Ans 2:

Shubhra from DPS, Haridwar
Class : Class 5

Ans 3:

om goyal from rainbow school, saharanpur
Class : Class 3

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Dushyant Singh from Shri Ram Centennial School, Indore
Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C


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aadityaarmaan from KVS Chabua, Dibrugarh
Subject :NSO    Class : Class 7

Ans 1:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
The answer is option B. We can see that the difference between w's height (3) and x's height (7) is the highest as compared to others. Therefore the moving ball gained maximum speed at X

Ans 2:

aadityaarmaan from KVS Chabua, Dibrugarh
Class : Class 3

Ans 3:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
Oh sorry! The reason is that at X, the ball traveled most distance in less time as compared to other.. That's the reason that the ball has greatest avg. speed at X

Ans 4:

Ishaan Pal from Christ Academy, Bangalore
Class : Class 8
the graph is not clear

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shubhavi Dhondge from NPS, Banagalore
Subject :NSO    Class : Class 4

Ans 1:

shubhavi Dhondge from NPS, Banagalore
Class : Class 9

Ans 2:

Aaryav Misra from Vibgyor High, Bengaluru
Class : Class 4
Doesn't hot air rise up from the land and cold air take up the hot air's place?

Ans 3:

Aditya Nair from TSA, Bangalore
Class : Class 4
The correct answer is: D

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shubhavi Dhondge from NPS, Banagalore
Subject :NSO    Class : Class 4

Ans 1:

SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Class : Class 8
all are correct

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