National Science Olympiad Forum By SOF Olympiad Trainer - Page 805

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Prabhav Shetty from Little Rock Indian School, Udupi

Subject :NSO Class : Class 7

In the given diagram, where will you find the image of the pencil?

(A) A

(B) B

(D) D
Is it not D??

Ans 1:

Prasuk Jain from Modern Delhi Public School, Faridabad

Class : Class 7

ans D

Ans 2:

Nilanjana De from Delhi Public School North, Bengaluru

Class : Class 8

The answer given is c. I donât understand how.

Ans 3:

Keratin from Chrysalis High, Bangalore

Class : Class 8

Answer is D don't worry people.

Ans 4:

thechampiondaksh from K R Mangalam World School, New Delhi

Class : Class 8

i think the answer is d

Ans 5:

anirudh_suresh@rocketmail.com from bangalore international academy, Bengaluru

Class : Class 7

Ans 6:

Aaqil Parvez from Al-Fajr International School, Chennai

Class : Class 7

Ans 7:

Daksh Thakkar from VIBGYOR, Mumbai

Class : Class 8

i think ans is d

Ans 8:

Mohinder singh from Sacred heart convent school, Ludhiana

Class : Class 7

How can the answer be c? Doesn't seem satisfying

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RiptideMel from Modern Vidya Niketan Senior Secondary School Sec 17, Faridabad

Subject :NSO Class : Class 8

A habitat change may result in the decline of the numbers of a given species. Such species slowly become P. This means that the species are on the verge of becoming Q. Some animals whose number has gone down to critically low levels are called R. A species is considered S when no member of the species is still alive. Which of the following is correct sequence for P, Q, R and S in the above paragraph.

AP – Vulnerable, Q – Endemic, R – Extinct, S – Endangered
BP – Endangered, Q – Vulnerable, R – Threatened, S – Extinct
CP – Vulnerable, Q – Endangered, R – Critically endangered, S – Extinct
DP – Endangered, Q – Critically endangered, R – Extinct, S – Vulnerable

How come the answer is B? According to Red Data book, Those species which are critically under the threat of being extinct are called Critically Endangered Species. Threatened Species are those which are under threat of being endangered if factors responsible for their lessening continue.

View All Answers (4)

Ans 1:

jainitf3 from MAHATMA MONTESSORI SCHOOL (CBSE) , Madurai

Class : Class 8

Ans 2:

Mohak Khetan from Podar International School Powai , Mumbai

Class : Class 8

It is C because i even googled it... so the ans is C not B

Ans 3:

Dr Anupa Ghosh from ,

Class : Class 8

correct option:B

Ans 4:

Dr Anupa Ghosh from ,

Class : Class 8

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Ambar and Adwita from Suncity School, Gurgaon

Subject :NSO Class : Class 5

Which of the following practices concerning plastics is not advisable?

APlastic bags must be recycled properly.
BPlastic bags must not be used for storing eatables.
CHousehold waste should be thrown away in plastic bags.
DShopkeepers should be discouraged from using plastic bags.

what is the answer?

View All Answers (12)

Ans 1:

KADALI VAMSIKRISHNA from BVM GLOBAL AT BOLLINENI HILLSIDE, Chennai

Class : Class 7

ANSWER: C

Ans 2:

Shivangi from St. Michael's High School, Patna

Class : Class 5

Ans 3:

Sharad Jain from Presidium, Ghaziabad

Class : Class 5

C should be correct.

Ans 4:

dhairya mittal from vidyashram international school jodhpur, Jodhpur

Class : Class 5

Ans 5:

Rabi rajak from SHREE JAIN VIDYALAYA, Kolkata

Class : Class 5

And:D

Ans 6:

rishi karthik from Bvm Global, chennai

Class : Class 5

C is correct big mistake here

Ans 7:

Sanjeev Garg from Assumption Convent School, malout

Class : Class 6

C is right

Ans 8:

Vaikhari Sonawane from symbiosis school, Nashik

Class : Class 10

c should be the answer

Ans 9:

Ashwin Shridhar from VSA, Bengaluru

Class : Class 6

Yes, it should be C.

Ans 10:

kavita1608@gmail.com from PRESIDENCY SCHOOL BANGALORE SOUTH, Bengaluru

Class : Class 4

c is the correct answer

Ans 11:

Smayan from Thakur International school, Mumbai

Class : Class 5

C is correct

Ans 12:

kpks14 from RIMT World School, Chandigarh

Class : Class 7

C should be correct as the option D is advisable.

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Ambar and Adwita from Suncity School, Gurgaon

Subject :NSO Class : Class 5

The graph below is intended to show the relationship between speed of the particles and the space between them.

Which line is not possible?

A W
B X
C Y
D Z

plz explain

View All Answers (6)

Ans 1:

Ali Hussain from Delhi Private School Dubai, Dubai

Class : Class 6

explain

Ans 2:

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

Class : Class 7

option d is the right answer. this is not possible as speed of particles increases when space between them increases .

Ans 3:

Mitesh from Shishya BEML Public School, Bengaluru

Class : Class 7

Ans 4:

Bhabani Prasad from Narayan School, Kolkata

Class : Class 6

Ans 5:

Rabi rajak from SHREE JAIN VIDYALAYA, Kolkata

Class : Class 5

And:c

Ans 6:

Gauri Singh from St Johns School Marhauli, Varanasi

Class : Class 8

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parijatsomani from The Global Edge School, Hyderabad

Subject :NSO Class : Class 7

When a horse pulls a cart, the force that helps the horse to move forward is the force exerted by ________.

(A) The cart on the horse

(B) The ground on the horse

(D) The horse on the ground
can the options a , b, c be true . as for me I don't think the ground can be on top of an horse right (b) please could you tell the right answer

View All Answers (2)

Ans 1:

Mayank Gupta from Kulachi Hansraj Model School, New Delhi

Class : Class 8

Ans 2:

kunal from Av vidya mandir school , cheeka

Class : Class 7

As ground apply frictional force on the horse. As it is not easy to run on rough area as compared to smooth area because smooth area apply less frictional force.

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kriet vohra from Presidium, Gurgaon

Subject :NSO Class : Class 5

Which sequence correctly lists the relative sizes from smallest to largest?

Aour solar system, Milky Way Galaxy, universe
Bour solar system, universe, Milky Way Galaxy
CMilky Way Galaxy, universe, our solar system
DMilky Way Galaxy, our solar system, universe

I gave the answer A but it shows D.request to check this question from NSO 3 Mock test of level 2

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Ans 1:

Gauri Chaturvedi from St. Joseph Convent, Jabalpur

Class : Class 6

Ans. A

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parijatsomani from The Global Edge School, Hyderabad

Subject :NSO Class : Class 7

Low atmospheric pressure exists on the earth in which of the following latitudes?

(A) At the equator only

(B) At 30° N and S

(D) At the equator and at 60° N and S.
as per me answer is d but computer is showing aplease check for the right answer

View All Answers (1)

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is D.

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Desh Raj from Him Gurukul International School, HAMIRPUR

Subject :NSO Class : Class 8

The given diagram shows nitrogen cycle in the ecosystem. P, Q, R, S and T represent different chemical conversion steps in the cycle.

Which process (P - T) is correctly paired with the organismal group performing that step?
I. P Nitrobacter
II. Q Bacteria symbiotic with plants
III. R Denitrifying bacteria
IV. S Nitrifying bacteria
V. T Nitrogen fixing bacteria, such as Rhizobium or cyanobacteria

AIII, IV and V
BIV and V
CI, III and IV
DIII and IV

View All Answers (1)

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is C.

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Daksh from RKC, Rajkot

Subject :NSO Class : Class 3

Select the odd one out based upon their life forms.

(A) Silkmoth

(B) Dragonfly

(D) Housefly
Do not get this one.Please help.

View All Answers (4)

Ans 1:

SANDEEP JOSHI from ,

Class : Class 3

Silkmoth can also fly

Ans 2:

Riddhiman Bose from Don Bosco School, Kolkata

Class : Class 5

Discuss on ForumQuestion.Select the odd one out based upon their life forms.(A) Silkmoth(B) Dragonfly(C) Mosquitoes(D) Housefly View All Answers (2)Ans 1:ishleenkaur from Maneckji Cooper Education Trust School, MumbaiClass : >Class 3 12 months agoThe answer is dragonfly because there is no pupae in the life cycle of dragonflyAns 2:SANDEEP JOSHI from ,Class : >Class 3 12 months agoSilkmoth can also fly

Ans 3:

Riddhiman Bose from Don Bosco School, Kolkata

Class : Class 5

Discuss on ForumQuestion.Select the odd one out based upon their life forms.(A) Silkmoth(B) Dragonfly(C) Mosquitoes(D) Housefly View All Answers (3)Ans 1:ishleenkaur from Maneckji Cooper Education Trust School, MumbaiClass : >Class 3 12 months agoThe answer is dragonfly because there is no pupae in the life cycle of dragonflyAns 2:SANDEEP JOSHI from ,Class : >Class 3 12 months agoSilkmoth can also flyAns 3:Riddhiman Bose from Don Bosco School, KolkataClass : >Class 3 3 minutes agoDiscuss on ForumQuestion.Select the odd one out based upon their life forms.(A) Silkmoth(B) Dragonfly(C) Mosquitoes(D) Housefly View All Answers (2)Ans 1:ishleenkaur from Maneckji Cooper Education Trust School, MumbaiClass : >Class 3 12 months agoThe answer is dragonfly because there is no pupae in the life cycle of dragonflyAns 2:SANDEEP JOSHI from ,Class : >Class 3 12 months agoSilkmoth can also flyDiscuss on ForumQuestion.Select the odd one out based upon their life forms.(A) Silkmoth(B) Dragonfly(C) Mosquitoes(D) Housefly View All Answers (3)Ans 1:ishleenkaur from Maneckji Cooper Education Trust School, MumbaiClass : >Class 3 12 months agoThe answer is dragonfly because there is no pupae in the life cycle of dragonflyAns 2:SANDEEP JOSHI from ,Class : >Class 3 12 months agoSilkmoth can also flyAns 3:Riddhiman Bose from Don Bosco School, KolkataClass : >Class 3 3 minutes agoDiscuss on ForumQuestion.Select the odd one out based upon their life forms.(A) Silkmoth(B) Dragonfly(C) Mosquitoes(D) Housefly View All Answers (2)Ans 1:ishleenkaur from Maneckji Cooper Education Trust School, MumbaiClass : >Class 3 12 months agoThe answer is dragonfly because there is no pupae in the life cycle of dragonflyAns 2:SANDEEP JOSHI from ,Class : >Class 3 12 months agoSilkmoth can also flyDiscuss on ForumQuestion.Select the odd one out based upon their life forms.(A) Silkmoth(B) Dragonfly(C) Mosquitoes(D) Housefly View All Answers (3)Ans 1:ishleenkaur from Maneckji Cooper Education Trust School, MumbaiClass : >Class 3 12 months agoThe answer is dragonfly because there is no pupae in the life cycle of dragonflyAns 2:SANDEEP JOSHI from ,Class : >Class 3 12 months agoSilkmoth can also flyAns 3:Riddhiman Bose from Don Bosco School, KolkataClass : >Class 3 3 minutes agoDiscuss on ForumQuestion.Select the odd one out based upon their life forms.(A) Silkmoth(B) Dragonfly(C) Mosquitoes(D) Housefly View All Answers (2)Ans 1:ishleenkaur from Maneckji Cooper Education Trust School, MumbaiClass : >Class 3 12 months agoThe answer is dragonfly because there is no pupae in the life cycle of dragonflyAns 2:SANDEEP JOSHI from ,Class : >Class 3 12 months agoSilkmoth can also flyWrite your commentsmy answer:D correct answer:

Ans 4:

ishleenkaur from Maneckji Cooper Education Trust School, Mumbai

Class : Class 3

The answer is dragonfly because there is no pupae in the life cycle of dragonfly

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Desh Raj from Him Gurukul International School, HAMIRPUR

Subject :NSO Class : Class 8

Mirages form on hot days due to

Abeing dehydrated and seeing illusions
Bhot air rising from the ground
Csunlight being reflected off the ground
Dlight rays being bent

View All Answers (1)

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is D.

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