National Science Olympiad Forum By SOF Olympiad Trainer

Chanpartap from The British Co Ed High School , Patiala

Subject :NSO Class : Class 7

The given graph shows the effect of pH on the activity of four different enzymes (P, Q, R and S). Which of the following correctly identifies enzyme found in the stomach, small intestine and one not affected by pH?

	Stomach	Small intestine	Unaffected by pH
A	R	S	Q
B	S	P	R
C	P	R	Q
D	Q	S	P

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Rishita Verma from Suncity School, Gurgaon

Subject :NSO Class : Class 5

There is a definite relationship between figures (i) and (ii). Establish the same relationship between figures (iii) and (iv) by selecting a figure from the options which will replace the (?) in figure (iv).

A
B
C
D

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Ans 1:

Siddhant Singhania from AGCS purulia, Puruliya

Class : Class 7

Ans 2:

from , rajahmundry

Class : Class 2

ans C

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Roopa Penmetsa from Roopa Penmetsa, Hyderabad

Subject :NSO Class : Class 4

The name of which of the following CANNOT be obtained by using the letters given in the box? (You can use each letter more than once.)

A It is formed by condensation of atmospheric water vapour on cold exposed surfaces like leaves of plants.
B It is formed when atmospheric water vapour condenses and freezes on a surface which cools past dew point.
C It is a form of precipitation occurring in plains and leading to floods at times.
D It forms when thunderstorm updrafts are strong enough to carry water droplets above the freezing level causing them to freeze.

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Ans 1:

Anishka Banerjee from Euroschool, Thane

Class : Class 5

c

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from , rajahmundry

Subject :NSO Class : Class 5

Which of the following setup represents a third class lever? A B C DNone of these Ans is "C"

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CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI

Subject :NSO Class : Class 5

Which of the following setup represents a third class lever?

A
B
C
DNone of these

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Ans 1:

AARNA MEHTA from G D Goenka, JAMMU

Class : Class 6

it is b option

Ans 2:

Sanay Pathak from Hooghly, Hooghly

Class : Class 5

Correct answer is C. Third-class lever has Effort in the middle

Ans 3:

harry potter from Hogwarts school of witchcraft and wizardry , london

Class : Class 5

yes, you are right

Ans 4:

MadhuraSS from Vidyashilp Academy, Bangalore

Class : Class 7

Ans 5:

harry potter from Hogwarts school of witchcraft and wizardry , london

Class : Class 5

no youre wrong

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Bhavik Bhat from Gurukul, Kashipur

Subject :NSO Class : Class 5

Study the given diagram that shows an arrangement of five bar magnets Which of the following shows the correct poles for X and Y?

	X	Y
A	North	South
B	South	South
C	North	North
D	South	North

piease answer

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Ans 1:

from , rajahmundry

Class : Class 2

Ans: D

Ans 2:

Rajrupa and Aparupa from Oxford cbse, bangalore

Class : Class 5

Ans 3:

Hima Devireddy from Phoenix , Hyderabad

Class : Class 8

your dumb

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Himanish munjal from Krm, Delhi

Subject :NSO Class : Class 4

Study the given Venn diagram carefully. Which labelled part represents stomach?

AP
BQ
CR
DS

Which digestive juice is secreted in stomach??

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Ans 1:

adhiraj chaudhary from apeejay school noida, noida

Class : Class 3

Ans 2:

Krishika Madan Shanmugam from National Public School, Bangalore

Class : Class 4

Stomach does not receive Bile, but it also digests protein and secretes digestive juice so stomach is R , and the correct option is C

Ans 3:

Krishna Atrey from DPS Vadodara, Vadodara

Class : Class 7

Ans 4:

Satvik Agrawal from Delhi Public School, bhopal

Class : Class 5

Ans 5:

Preesha Shrivastav from Suncity school, Gurgaon

Class : Class 4

Bile juice is secreted by liver. so P is not right. R is correct. stomach has digestive juices and digests proteins

Ans 6:

Archita Moi from The Newtown School, Kolkata

Class : Class 4

Thanks a lot friends !

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aditya apurva from DAV public School, Duttnagar

Subject :NSO Class : Class 9

Refer to the given figure and select incorrect statement regarding it.

A Site 1 has higher alpha diversity than site 2.
B Region Y has higher beta diversity than region X.
C Region X has high alpha diversity, lower beta diversity but higher gamma diversity than region Y.
D Region Y has lower alpha diversity, higher beta diversity and higher gamma diversity than region X.

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aditya apurva from DAV public School, Duttnagar

Subject :NSO Class : Class 9

Which of the following is an incorrect match of phylum, type of coelom present in it and a characteristic feature?

A (ii) only
B (iv) only
C (i) and (iii) only
D (ii), (iii) and (iv) only

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Ans 1:

Chaitanya Gawade from JPS, Pune

Class : Class 9

C

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from Gcis,

Subject :NSO Class : Class 5

Which of the following causes soil erosion?

AEmbankment, wind, water
BWind, water, overgrazing
CAfforestation, overgrazing, wind
DWind, water, terrace farming

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Ans 1:

from , rajahmundry

Class : Class 2

Ans B

Ans 2:

Alina Chattopadhyay from Tagore International School, Vasant Vihar, New Delhi, South Delhi

Class : Class 5

But C can also be the answer as afforestation, overgrazing and wind.

Ans 3:

from , rajahmundry

Class : Class 2

Ans B

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