National Science Olympiad Forum By SOF Olympiad Trainer

Snehal Akolkar from vikhe patil, Pune

Subject :NSO Class : Class 4

Select the option which on unscrambling gives the name of a clothing item worn in winter.

A RFMUFLE
B CROFK
C SRTOSH
D None of these

give solution

Ans 1:

UMANG from SPRING DALE COLLAGE, Lucknow

Class : Class 8

Answer is option A. MUFFLER

Ans 2:

UMANG from SPRING DALE COLLAGE, Lucknow

Class : Class 8

Answer is a

Ans 3:

UMANG from SPRING DALE COLLAGE, Lucknow

Class : Class 8

Answer is option A.

Ans 4:

UMANG from SPRING DALE COLLAGE, Lucknow

Class : Class 8

Answer is option A.

Ans 5:

Ridhan from SFS janakpuri, New Delhi

Class : Class 5

answer is a

Post Your Answer

Sabhya Kumar from Suncity School, Gurgaon

Subject :NSO Class : Class 7

Study the given table and select the correct option.

	P	Q	R	S
A	Dahlia	Spirogyra	Rhizopus	Begonia
B	Yeast	Rhizopus	Spirogyra	Begonia
C	Spirogyra	Rhizopus	Begonia	Dahlia
D	Dahlia	Yeast	Spirogyra	Rhizopus

Post Your Answer

Falguni from Navkis, Bangalore

Subject :NSO Class : Class 6

Which pair shows correct match of organism with its breathing organs?

ADolphin-lungs
BSnake-Moist skin
CEarthworm-Spiracles
DWhale-Gills

Earthworms breathe through spiracles.How can the answer be A

Ans 1:

kpks14 from RIMT World School, Chandigarh

Class : Class 7

Answer is A Dolphin is a mammal which breaths through the lungs. Whales also have the same system Whereas, earthworm breathes through the skin.

Post Your Answer

Sabhya Kumar from Suncity School, Gurgaon

Subject :NSO Class : Class 7

Read the given statements and mark the correct option.
Statement 1 : The ash produced by burning magnesium when dissolved in water turns China rose indicator dark pink.
Statement 2 : The ash formed is MgO which when dissolved in water forms an acidic solution.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true but statement 2 is false.
D Both statements 1 and 2 are false.

View All Answers (0)

Submit Your Answers

Post Your Answer

Falguni from Navkis, Bangalore

Subject :NSO Class : Class 6

Look at the two objects below.

From the following statements, pick out those which are true.
1. Cotton is heavier than iron.
2. Both the objects have the same volume.
3. Both the objects are solid.
4. Both the objects are waterproof.
5. Both the objects have same mass.

A1 and 2
B3 and 5
C4 and 5
D3 and 4

It has to be D

View All Answers (1)

Ans 1:

Aadhya Kumawat from Jaipur School, Jaipur

Class : Class 6

M

Submit Your Answers

Post Your Answer

SANKALP S YANAMANDRA from DELHI PUBLIC SCHOOL, SURAT

Subject :NSO Class : Class 8

Read the given statements and select the correct option.
Statement 1: Petrol condenses near the top of the fractionating column while diesel oil near the middle of the column.
Statement 2: Petrol is more volatile than diesel oil.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Both statements 1 and 2 are false.

View All Answers (6)

Ans 1:

Shreyans Mondal from Sri Chaitanya Techno School Kaggadasapura Campus 1, Bengaluru

Class : Class 10

it must be B. The altitude of condensation depends on the boiling point and not on the volatility

Ans 2:

KARTIK SHINDE from Delhi Public school Rau Indore , indore

Class : Class 4

b Is the correct ans

Ans 3:

PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Class : Class 8

Ans 4:

Priyanka Sinha from National Public School International, Mysore

Class : Class 8

B

Ans 5:

PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Class : Class 8

Ans 6:

Bhagyesh Kamal from DPS, Mumbai

Class : Class 8

A

Submit Your Answers

Post Your Answer

Tay Wen Xuan from Inspiros International School, SHAH ALAM

Subject :NSO Class : Class 8

Kavita wrote two sentences about calorific value of fuels.

(i) The amount of heat energy required by 1 kg of a fuel to reach its ignition temperature for the complete combustion is called its calorific value.

(ii) It is expressed in a unit called kilojoule per kg (kJ/kg).

Choose the correct sentence(s).

(A) (i)

(B) (ii)

(C) Both (i) and (ii)

(D) None of these
(i) amount of heat energy produced, not required

View All Answers (0)

Submit Your Answers

Post Your Answer

Devyani bansal from Blue bell school international, New Delhi

Subject :NSO Class : Class 4

The diagram below shows a portion of the solar system as seen from space. For which object is the lighted surface shown INCORRECTLY?

A Moon
B Venus
C Mercury
D Earth

View All Answers (5)

Ans 1:

Apoorva Gaurav from DAV, Muzaffarpur

Class : Class 5

Venus

Ans 2:

Vikas Jhamb from Bhawan, Chandigarh

Class : Class 3

correct answer should be venus

Ans 3:

Devyani bansal from Blue bell school international, New Delhi

Class : Class 5

Ans 4:

from ,

Class :

FTX cofounder Sam Bankman-Fried has amassed $22.5 billion before turning 30 by profiting off the cryptocurrency boom – but he’s not a true believer. He just wants his wealth to survive long enough to give it all away. Read more here https://www.forbes.com/sites/stevenehrlich/2021/10/06/the-richest-under-30-in-the-world-all-thanks-to-crypto/

Ans 5:

Aadya Kawale from Podar International ICSE , Dombivli East

Class : Class 4

Yeah it’s Venus.

Submit Your Answers

Post Your Answer

Inesh Dheer from Bhavan Vidyalaya, Chandigarh

Subject :NSO Class : Class 8

Which of the following is incorrect about the given figures?

A Both are unicellular eukaryotic organisms.
B a is unicellular while b is multicellular organism.
C Both are capable of independent existence.
D Both (B) and (C)

View All Answers (9)

Ans 1:

arnav raj sharma from gulibulium school, new york

Class : Class 8

the characteristics of the R is not same in the table and the venn diagram

Ans 2:

Antarik Maity from Bharatiya Vidyabhaban, Kolkata

Class : Class 8

Ans 3:

Dhanya Krishnaji from ISG, Muscat

Class : Class 8

Yes, the correct answer is both a and c as amoeba and paramecium are unicellular.

Ans 4:

Antarik Maity from Bharatiya Vidyabhaban, Kolkata

Class : Class 8

The correct answer should be option A and not option B as Paramecium (Organism C) is also an unicellular organism along with Amoeba.

Ans 5:

Dhanya Krishnaji from ISG, Muscat

Class : Class 8

No the answer b is correct because the question says incorrect and not correct

Ans 6:

cherry from atomic energy central school-4, mumbai

Class : Class 9

yes...the answer should be a and c

Ans 7:

Vartika Agarwal from Phoenix world school, Pune

Class : Class 9

okay I know I put answer as option c but COME ON!! option b is completely wrong even solution is saying both are unicellular and capable of independent existence .

Ans 8:

Bipasana from KV IIT Kanpur, Kanpur

Class : Class 9

But b is paramecium, right? And paramecium is unicellular too!

Ans 9:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee

Class : Class 10

True! The answer should be a and c.

Submit Your Answers

Post Your Answer

Inesh Dheer from Bhavan Vidyalaya, Chandigarh

Subject :NSO Class : Class 8

Which of the following statements is/are correct?
(i) The nucleoplasm and the cytoplasm together make up the protoplasm.
(ii) Chloroplasts are a type of plastids, which occur in plant cells.
(iii) In many multicellular organisms, all cells have projections called cilia and flagella.
(iv) Cell destruction occurs by centrosomes.

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

User Forum

Ans 1:

Ans 2:

Ans 3:

Ans 4:

Ans 5:

Ans 1:

Ans 1:

Ans 1:

Ans 2:

Ans 3:

Ans 4:

Ans 5:

Ans 6:

Ans 1:

Ans 2:

Ans 3:

Ans 4:

Ans 5:

Ans 1:

Ans 2:

Ans 3:

Ans 4:

Ans 5:

Ans 6:

Ans 7:

Ans 8:

Ans 9:

Related Links