National Science Olympiad Forum By SOF Olympiad Trainer

Chinmay from SBPPS, Pune

Subject :NSO Class : Class 6

Read the following statements and select the incorrect ones.
(i) The study of food chains shows the interdependence of various organisms in a particular environment.
(ii) Herbivores have sharp cutting teeth in front and flat, grinding teeth at the back.
(iii) Scavengers mainly consume dead bodies of animals and help to keep the surroundings clean.
(iv) Some examples of scavengers are cows, jackals, leeches and bugs.

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

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Ans 1:

Ayan Gupta from sdf public school, GAUTAM BUDDHA NAGAR

Class : Class 6

Ans 2:

Ayaan Shankta from Dhirubhai Ambani international School, Mumbai

Class : Class 6

Ans 3:

Maya Vijay from NPS Chennai, Chennai

Class : Class 6

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pranavramesh from sri chaitanya techno school, Chennai

Subject :NSO Class : Class 5

put likes please

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Snigdha Srivastava from Vibgyor High NIBM , Pune

Subject :NSO Class : Class 7

Which of the following statements is/are false?
(i) Two thin woollen sweaters are warmer than a thick woollen sweater.
(ii) It saves fuel if we cook food in a vessel which is blackened at the bottom and polished from the sides.
(iii) The cable wires between two poles are left loose, because in summers the wires may not break on expanding.

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

What

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Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai

Subject :NSO Class : Class 6

A few changes are classified in the given table :

Changes classified incorrectly are

A II and IV only
B I and III only
C III, IV and V only
D III and V only.

first one to write a comment!

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Ans 1:

Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai

Class : Class 6

Answer is c

Ans 2:

Barnam from Mother merry school, Goalpara

Class : Class 7

Ans 3:

Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai

Class : Class 6

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Ishaan Ahuja from TSMS, Noida

Subject :NSO Class : Class 5

Which of the following is not present in the given word grid?

AA strong tropical storm with fast spinning winds called as hurricane in Southern USA.
BNatural disasters caused due to excessive or no rainfall at all in an area
CAn opening or rupture in Earth’s surface or crust through which hot molten rock, ash and gases escape
DA natural havoc whose intensity is measured on a seismograph

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Ans 1:

samanvay sinha from School of India, Bangalore, bengaluru

Class : Class 5

Ans 2:

Saatwik Padhy from TREE HOUSE HIGH SCHOOL, VIRAR

Class : Class 8

Option D is incorrect because Both A and D are the correct answers. Both Hurricane and Earthquake are not present.

Ans 3:

samanvay sinha from School of India, Bangalore, bengaluru

Class : Class 5

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Omar Faruq Molla from ITL Public School, Delhi

Subject :NSO Class : Class 5

The given figure shows plant parts labelled as P, Q, R and S. Which of the following options correctly list the plants in which labelled part is edible?

AP - Broccoli, Cauliflower, Lettuce
BQ - Tapioca, Turnip, Onion
CR - Coriander, Spinach, Fenugreek
DS - Potato, Ginger, Sweet potato.

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Shriya Rathaur from NHG Banaglore, Bangalore

Subject :NSO Class : Class 8

Refer to the given Venn diagram and select the incorrect statement regarding P-S.

AP could be Bacillus anthracis that causes anthrax.
BQ could be Vibrio cholerae that causes cholera in humans.
CR could be Chlamydomonas that is distributed widely in fresh water.
DS could be Giardia that causes intestinal infection in humans.

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arnav from Dps noida, Delhi

Subject :NSO Class : Class 6

Observe the given changes and select the correct option.

A I, II and III, all are reversible changes.
B I and III are reversible changes while II is a irreversible change.
C I, II and III, all are irreversible changes.
D I is a chemical change while II and III are physical irreversible changes.

mahendra bahubali

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Vedang Amonkar from Dr K B Hedgewar High School, Panaji

Subject :NSO Class : Class 6

Match column I with column II and select the correct option from the codes given below.

Column I	Column II
(A) Floods	(i) Aquifers
(B) Groundwater	(ii) Salt water
(C) Ocean	(iii) Rain
(D) Precipitation	(iv) Dirt and water vapour
(E) Clouds	(v) Excess rain

A (A) - (i), (B) - (ii), (C) - (iii), (D) - (iv), (E) - (v)
B (A) - (v), (B) - (i), (C) - (ii), (D) - (iii), (E) - (iv)
C (A) - (i), (B) - (v), (C) - (iii), (D) - (ii), (E) - (iv)
D (A) - (v), (B) - (i), (C) - (iii), (D) - (ii), (E) - (iv)

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vedant from TSRS Aravalli, Gurgaon

Subject :NSO Class : Class 4

Anu set-up an experiment as shown in the picture. After 15 minutes, no water can be seen in the bowl. Which of the following materials sheet Y could be made of?

ALinen
BPlastic
CAluminium
DEither B or C

it should be a not d

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