National Science Olympiad Forum By SOF Olympiad Trainer

Karmanya Gupta from DPS, Udaipur

Subject :NSO Class : Class 5

In which of the following conditions seed will germinate (ü represents presence, × represents absence) ?

Sunlight Air Water Humidity

(A) u × u ×

(B) u u u ×

(C) × u u ×

(D) u u u u

Ans 1:

naman from PSBBM, Chennai

Class : Class 1

d D D D D D D D D D D D D D IS THE ANSWER

Ans 2:

JAGANNIVASON .R from ST.Patrick hr.sec.school, Puducherry

Class : Class 5

D

Ans 3:

Gargi SB from SSRVM, Mumbai

Class : Class 5

why cant plants survive without humidity

Ans 4:

Ashher Pervez from DPS Bhilai, Bhilai

Class : Class 10

answer is D because if there will be no humidity the soil wouldn't be moist and also there would not be rain so, how can plant survive.

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Karmanya Gupta from DPS, Udaipur

Subject :NSO Class : Class 5

Which of the following methods is suitable to keep green coriander fresh for 1-2 days ?

(A) By keeping it in a bowl containing water

(B) By keeping it in open

(C) By wrapping it in a damp cloth

(D) By drying it.

Ans 1:

Gargi SB from SSRVM, Mumbai

Class : Class 5

c

Ans 2:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee

Class : Class 10

Ans 3:

JAGANNIVASON .R from ST.Patrick hr.sec.school, Puducherry

Class : Class 5

C

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Vaidehi from Agragami Convent School.Wardha., wardha

Subject :NSO Class : Class 10

IS ASTATINE[atomic no.=85] A HALOGEN?

Ans 1:

shivangini kumar from Queens college, indore

Class : Class 10

yes because it is part of 17 period of halogens in periodic table

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jeeva from Kendriya Vidyalaya Kottayam, Kottayam

Subject :NSO Class : Class 8

X appears as silk. It is strong and flexible. Non-availability of X caused riots after world war-II. X is

(A) Cotton

(B) Nylon

(C) Polyester

(D) Rayon.
what is the answer . can you explain

Ans 1:

Vaidehi from Agragami Convent School.Wardha., wardha

Class : Class 10

option a is correct.It caused riots in india against british cheap cotton goods

Ans 2:

Subash kandoth from New horizon public school , Navi Mumbai

Class : Class 10

Rayon is known as artificial silk

Post Your Answer

jeeva from Kendriya Vidyalaya Kottayam, Kottayam

Subject :NSO Class : Class 8

When we burn the following, which of them leaves no residue?

(i) Cotton

(ii) Terylene

(iii) Jute

(iv) Nylon

(A) (i) & (iii)

(B) (ii) & (iv)

(C) (i) & (ii)

(D) (iii) & (iv).
answer seems wrong . Can you explain ?

Ans 1:

Subash kandoth from New horizon public school , Navi Mumbai

Class : Class 10

Does nylon leave no residue when burnt?

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Mousumi Roy from Bal Bharti public school, New delhi

Subject :NSO Class : Class 2

Match the two columns and select the correct option.

Adult

Babies

Lion

Cub

Tiger

Colt

Horse

Cygnet

(A) Lion - Cub; Tiger - Cub; Horse - Colt

(B) Lion - Colt; Tiger - Cub; Horse - Cygnet

(C) Lion - Cub; Tiger - Colt; Horse - Cygnet

(D) Lion - Cub; Tiger - Cygnet; Horse - Cygnet.

A

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Amit Bhasin from Podae International School, Nerul

Subject :NSO Class : Class 5

Study the given Venn diagram. Select an example for L, M and N.

(a) L-Rubber band M-Oxygen N-Ceramic tile
(b) L-Iron rod M-Salt N-Water vapour
(c) L-Syrup M-Ceramic tile N-Oxygen
(d) L-Marble M-Syrup N-Nitrogen

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Navneeth Reejish from Yuvabharati International school, Singapore

Subject :NSO Class : Class 4

The 'X' in the figure below shows a _____________ moon.

(A) Full

(B) Gibbous

(C) Crescent

(D) New.

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is B.

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Rajendra Mishra from Kendriya Vidyalaya, Koliwada, Kane Nagar, Mumbai

Subject :NSO Class : Class 6

Which of the following is not an environmental problem caused due to deforestation ?
(a) Soil erosion
(b) Desertification
(c) Eutrophication
(d) Landslides

smart

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Ans 1:

Rajendra Mishra from Kendriya Vidyalaya, Koliwada, Kane Nagar, Mumbai

Class : Class 6

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Rajendra Mishra from Kendriya Vidyalaya, Koliwada, Kane Nagar, Mumbai

Subject :NSO Class : Class 6

Ritu made some observations on the behavioural pattern of earthworm which are as follows:
(i) When earthworm was placed on the rough surface such as cardboard, it showed fast, wriggling movement.
(ii) When earthworm was placed on hand, it showed less movement.
Above observations prove that ______.
(a) Earthworm cannot sense the difference in its surroundings
(b) Earthworm can respond to changing environmental conditions
(c) Earthworm can move on rough surface only
(d) Earthworm is not comfortable to move on smooth surface

yes

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