National Science Olympiad Forum By SOF Olympiad Trainer

Daksh from RKC, Rajkot

Subject :NSO Class : Class 3

Select the odd one out based upon their life forms.

(A) Silkmoth

(B) Dragonfly

(C) Mosquitoes

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

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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 (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 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 (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 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

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is D.

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Shweta Galundia from witty international school, Udaipur

Subject :NSO Class : Class 6

Which of the following diagrams correctly shows the movement of the rack and pinion mechanism?

A
B
C
D

not knowing

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riteshnayak from DAV PUBLIC SCHOOL ,MCL,KALINGA AREA, TALCHER

Subject :NSO Class : Class 4

Which of these is INCORRECT about roughage?

A It helps in making blood.
B It helps in repairing the damaged parts of the body.
C It helps the body to get rid of undigested food.
D Both a and b

WHAT IS THE ANSWER

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is D.

Ans 2:

SOUMI PAL from DELHI PUBLIC SCHOOL, DURG

Class : Class 4

The right answer is d.

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Gauri Chaturvedi from St. Joseph Convent, Jabalpur

Subject :NSO Class : Class 5

Consider the following statements regarding silk moth.
I.The female silk moth lays eggs which hatch into pupa.
II.The caterpillar secretes a fibre made of a protein, which hardens on exposure to air.
III.The silk fibre is obtained from the cocoon of the moth.
IV.The caterpillar covers itself by silk fibres and enters the adult stage. Among the given statements,

Aonly I is correct
Bonly II is correct
Cboth I and IV are correct
Dboth II and III are correct

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Gauri Chaturvedi from St. Joseph Convent, Jabalpur

Subject :NSO Class : Class 5

Which of the following statements regarding weathering is not correct?

AHeat and heavy rainfall increase the rate of weathering.
BRocks of different compositions weather at different rates.
CThe longer a rock is exposed at the surface, the more weathered it will be.
DThe presence of soil increases the rate of weathering in the underlying bedrock.

Please tell the answer

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goelakshat03 from St Theresa's Convent School, Karnal

Subject :NSO Class : Class 8

Which figure shows the position that Rajat should take to minimise the chance of getting struck by lightning?

A
B
C
D

In the NCERT book, the explanation is given that one must squat low to avoid lightening. But here it is mentioned something else. Please explain.

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Ans 1:

Mohak Khetan from Podar International School Powai , Mumbai

Class : Class 8

i think sitting on the chair refers to him being inside a house or a car

Ans 2:

OM KANADE from Euro School, Bengaluru

Class : Class 8

Option - D

Ans 3:

jainitf3 from MAHATMA MONTESSORI SCHOOL (CBSE) , Madurai

Class : Class 8

the ans is a becse a umberlla has a metal stick a conductor of electricity

Ans 4:

Desh Raj from Him Gurukul International School, HAMIRPUR

Class : Class 9

This is because the person should have the minimum ground contact.

Ans 5:

Mohak Khetan from Podar International School Powai , Mumbai

Class : Class 8

He is sitting on a chair which probably means that he at somw house or in a car

Ans 6:

devanshu.khushu@gmail.com from B. C. M. Arya model school, Ludhiana

Class : Class 9

D

Ans 7:

paras pandita from kendriya vidyalaya, Jammu

Class : Class 9

B

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YAGYASHA RASTOGI from PRESIDIUM INDIRAPURAM, Ghaziabad

Subject :NSO Class : Class 6

You were given some plants or twigs of plants like brinjal, wheat, neem, banana and China rose. From them you were asked to select two plants, one which is a herb having tap root and leaves showing parallel venation and the other also a herb but with leaves showing parallel venation and fibrous roots. Which two plants would you select for the same?

ABrinjal, wheat
BNeem, maize
CWheat, maize
DBrinjal, neem

In this question the correct answer is 'A' but nor brinjal is a herb neither wheat and pls tell if it is possible that a plant can have parallel venation but has tap root ?