National Science Olympiad Forum By SOF Olympiad Trainer
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Pragna Mahata from The Assembly of God Church School, Purulia
Subject :NSO    Class : Class 7

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

Column I Column II
(A) Earthworm (i) Pulmonary respiration
(B) Human (ii) Branchial respiration
(C) Prawn (iii) Tracheal respiration
(D) Insects (iv) Cutaneous respiration


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


Ans 1:

Hassan ahmad khan from Bal Bhavan School, Bhopal MP
Class : Class 7
c

Ans 2:

from Sri Chaitanya Techno School, Bengaluru
Class : Class 9

Ans 3:

krishna tripathi from nahtfg, mjhiuhgh
Class : Class 8

Ans 4:

krishna tripathi from nahtfg, mjhiuhgh
Class : Class 8
B

Post Your Answer

kpks14 from RIMT World School, Chandigarh
Subject :NSO    Class : Class 6

Ans 1:

aikya from psbn, bangalore
Class : Class 5
Answer is D as her distance from mirror is 3m and again 3m.Girl B is 8m so 3m 3m 8m is 14mHope it is helpful

Ans 2:

Raghav Aggarwal from CAMBRIDGE SCHOOL INDIRAPURAM, INDIRAPURAM
Class : Class 7
The answer is d as the girl is looking inn the mirror. She is 3m before the mirror . When she looks into the mirror she takes her point in the mirror to be 0m. When she observes that the 2nd girl was 8m behind her than the distance she would see the girl in the mirror would be 8 m ahead. So the 1st girl distance in the mirror would be 8m and distance of girl2 is 8m. So (6 8)m=14m

Ans 3:

Ishita Pandey from The Samhita academy, Bengaluru
Class : Class 7
Thanks Aikya

Post Your Answer

Aneesh Balaji from BVBARR school, Hyderabad
Subject :NSO    Class : Class 3

Ans 1:

Daksh Chanani from Sri Sri academy, Kolkata, HOWRAH
Class : Class 4
D , tricky one

Ans 2:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD
Class : Class 3
D

Ans 3:

FAIZA AMIN from SAINT XAINS INTERNATIONAL SCHOOL ANANTNAG, ANANTNAG
Class : Class 3
D

Ans 4:

Aneesh Balaji from BVBARR school, Hyderabad
Class : Class 4
d

Ans 5:

Soham Yadav from Ryan international School Sector 11 Rohini, New Delhi
Class : Class 4
tricky one

Post Your Answer

Agustya vaid from Somerville school vasundhara enclave, Delhi
Subject :NSO    Class : Class 6

Ans 1:

Ashwak from Cambridge International School, Saudi Al Dera
Class : Class 8
ANS should be D

Ans 2:

Abaan Mushtaq from Iqbal Memorial Institute Bemina , Srinagar
Class : Class 6
clouds only form in troposphere

Ans 3:

ADRIJA SAHA from DPS RANIPUR, Haridwar
Class : Class 6
The answer should be D.

Ans 4:

shreyash from amaatra, bangalore
Class : Class 3
ya i guees c is the ans as it mesosphere

Ans 5:

Sharmi Chowdhury from G.D Birla Centre For Education , Kolkata
Class : Class 7
But then if p is troposphere, then how come clouds are formed in q?Clouds are formed in troposphere(p).

Ans 6:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 6
answer shoul be c , meteorites burn up in mesosphere

Ans 7:

Ishaan Shivakumar from Bombay Scottish , Mahim West
Class : Class 6
B only should be the answer

Ans 8:

ADRIJA SAHA from DPS RANIPUR, Haridwar
Class : Class 6
Sorry, C

Post Your Answer

Agustya vaid from Somerville school vasundhara enclave, Delhi
Subject :NSO    Class : Class 6

Post Your Answer

Pragun goel from Venkateshwar International School, Delhi
Subject :NSO    Class : Class 5

Ans 1:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 2:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 3:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 4:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 5:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 6:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 7:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 8:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 9:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 10:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 11:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 12:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 13:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 14:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 15:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Ans 16:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

Post Your Answer

Fareeha siddiqua from Janki Devi public school , Mumbai
Subject :NSO    Class : Class 4

Ans 1:

Kavin from ISG , Muscat, Muscat
Class : Class 5
so did i pranab

Ans 2:

PRANAB KUMAR from MARIAS PUBLIC SCHOOL, Guwahati
Class : Class 6
i did not understand anything/

Post Your Answer

Dishamrutha from indian school of excellence, bangalore
Subject :NSO    Class : Class 5

Post Your Answer

TEJASWANI from TIME SCHOOL, HYDERABAD
Subject :NSO    Class : Class 7

Refer to the given figures and select the correct option regarding them.


APlant P is an insectivorous plant that grows in nitrogen deficient soil while plant Q is a symbiotic plant, which fixes atmospheric nitrogen.
BPlant P can make its own food but it depends on host plant for minerals and water.
CPlant Q cannot photosynthesise hence it absorbs the food prepared by host plant and harms it.
DBoth plants P and Q are insectivorous plants but plant P has glandular tentacles with mucilage at ends whereas plant Q has bladders to catch insect.


tetrggggyfgeu8w88whshhhhhhhhhhhhhhhhhhhhhhhhy3ywhhhhh

Post Your Answer

Lokesh Sai Dasari from Rockwell International School, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Dishamrutha from indian school of excellence, bangalore
Class : Class 6
D) Both A & B

Ans 2:

Dishamrutha from indian school of excellence, bangalore
Class : Class 6

Ans 3:

Anjisha Chakraborty from Mount Litera Zee School, Jabalpur
Class : Class 5
Option D)

Post Your Answer