National Science Olympiad Forum By SOF Olympiad Trainer - Page 339
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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D

There two 'S' in the word 'COSMOS' so, 'COSMOS' cannot be made from the given word.


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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 4

Ans 1:

Om Satish Punse from Terna Orchid the international school koparkhairne, Navi mumbai
Class : Class 7
What are first class levers and second class levers?

Ans 2:

Kavin from ISG , Muscat, Muscat
Class : Class 5
snow white are you too selected this year 2020-2021

Ans 3:

Advay and Aahan Rustagi from Vidyashilp Academy , Bengaluru
Class : Class 5
SCISSORS ARE : WEDGE, SCREW

Ans 4:

Sanaya Singh from Hiranandani Foundation, Mumbai
Class : Class 2
The person called admin is correct

Ans 5:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7
Well, why don't they teach all this stuff in the synopsis?!They should, but, Admin from revisewise is correct.

Ans 6:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7
I think that he/she is.

Ans 7: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Tweezers are third class lever whereas see-saw, crowbar and scissors are first class levers.


Ans 8:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Admin is correct

Ans 9:

Syed Hrehaan Ahamed from Bahrain Indian School, Manama
Class : Class 8

Ans 10:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7

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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

 Embankment is built on the banks of the river. It stops the water of the river from flooding the fields.


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SANJEEV VARSHNEY from Lotus valley international school, Noida
Subject :NSO    Class : Class 7

Ans 1:

Anshika Minocha from DPS Vasant Kunj, NEW DELHI
Class : Class 10
I agree.

Ans 2:

Rithvik from BVM Global, Chennai
Class : Class 9
True plastic is a BAD CONDUCTOR but it’s not an INSULATOR right? So possibly it would naturally take some time .

Ans 3:

Srijan Anand from VIBGYOR HIGH, Bangalore
Class : Class 7
Plastic is not a good conductor of heat. So how should the answer be A?

Ans 4:

Trina from Ganges Valley School, Hyderabad
Class : Class 9
plastic is a bad conductor then it would be C

Ans 5:

Archishman Pal from Sri Krishna Mission School, Agartala
Class : Class 9
I agree with Srijan Anand !!!

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Necro from New Tulip international school, Ahmedabad
Subject :NSO    Class : Class 7

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student from school, city
Subject :NSO    Class : Class 7

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ZEHRA MAZHAR from GAIL D A V SCHOOL PUBLIC SCHOOL, AURAIYA
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

A. Incorrect - The first metro service was inaugurated in Kolkata in 1984 by former Prime Minister Indira Gandhi.
B. Correct 
C. Incorrect - Transport facilities are necessary for International trade.
D. Incorrect - Auto rickshaw are used by passengers to travel short distances in the same city or village.


Ans 2:

SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Class : Class 9
ADMIN YOUR MASTER ANSWER CORRECT

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AKSHAJ SRIVASTAVA from MOUNT LITERA ZEE SCHOOL, Kanpur
Subject :NSO    Class : Class 8

Ans 1:

Parth from DPS Mathura road, Delhi
Class : Class 8

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C


Ans 3:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7

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Bhanu Pratap Singh Chouhan from Billabong high , BHOPAL
Subject :NSO    Class : Class 2

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D

All insects lay eggs and have six legs. Head louse (D) is a wingless insect. So it cannot fly. Mosquito (B) and housefly (C) are winged insects so they can fly. Spider (A) is not an insect. It has eight legs. It does not have wings so it also cannot fly.


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Adheesh Sharma from DPS Greater Faridabad , Faridabad
Subject :NSO    Class : Class 3

Ans 1:

ABHIJIT BHATTACHARYYA from Narayana Group Of Schools, KOLKATA
Class : Class 3
b

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

A. This beak is strong and curved. Parrots have such beaks. It allows them to crack nuts, bite hard fruits and grip barks and branches of trees.
B. This beak is long, thin and tubular. Humming birds have such beaks. These beaks can be inserted into the narrow center portion of the flowers and birds can drink nectar through them.
C. This beak is broad and flat with holes. Ducks have such beaks. Ducks in ponds gulp water in these beaks, they keep the aquatic plants, fish and insects inside the beak, while water seeps out the tiny holes present in the beak.
D. This beak is strong, sharp and hooked. Eagles have such beaks. It allows them to tear off and eat the flesh of the prey.
Hence, the right answer is option B.


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