National Science Olympiad Forum By SOF Olympiad Trainer

Debarpan Das from Delhi Public School , Durgapur

Subject :NSO Class : Class 5

The given table represents the characteristics of three different objects X, Y and Z.

Which of the following could be X, Y and Z?

AX- Plastic bag Y- Cardboard Z- Rubber band
BX- Paper Y- Rubber band Z- Cardboard
CX- Rubber band Y- Sponge Z- Plastic straw
DX- Sponge Y- Cardboard Z- Rubber band

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Debarpan Das from Delhi Public School , Durgapur

Subject :NSO Class : Class 5

Refer to the given table and select the option that correctly identifies P, Q and R.

AP- Dolphin Q- Whale R- Penguin
BP- Polar bear Q- Dolphin R- Duck
CP- Penguin Q- Polar bear R- Duck billed platypus
DP- Duck Q- Penguin R- Whale

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Ans 1:

Saket Khurana from DPS E-CITY BENGALURU, BENGALURU

Class : Class 9

Ans 2:

Vihaan Patil from Bombay Scottish School, Mahim Mumbai

Class : Class 6

plz explain

Ans 3:

Shreejith from EuroSchool , Bangalore

Class : Class 7

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Debojit Sahu from Kendriya vidyalaya paradip port, paradip

Subject :NSO Class : Class 9

Fill up the blanks and select the correct option from the codes given below.
(I)__(i)__ is decomposed mixture of cattle excreta and urine along with straw and fodder.
(II)__(ii)__ is made from vegetable wastes and animal wastes decomposed by aerobic and anaerobic microorganisms.
(III)__(iii)__ is prepared by sowing certain crop seeds and then ploughing them back in the soil.
(IV)__(iv)__ is made by decomposition of plant and animal refuse with the help of earthworms.

(a) (i)Vermi compost (ii)Farmyard manure (iii)Green manure (iv)Compost
(b) (i)Farmyard manure (ii)Compost (iii)Green manure (iv)Vermi compost
(c) (i)Green manure (ii)Compost (iii)Farmyard manure (iv)Vermi compost
(d) (i)Compost Green (ii)manure (iii)Farmyard manure (iv)Vermi compost

super question for nso

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Vartika Agarwal from Phoenix world school, Pune

Subject :NSO Class : Class 6

While measuring the length of a wooden box, the reading at one end is 1.5 cm and the other end is 4.7 cm. What is the length of the wooden box?

A 4.7 cm
B 1.5 cm
C 3.2 cm
D 6.2 cm

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Ans 1:

Shikhar Mallick from Holy Cross School, Agartala

Class : Class 7

Ans 2:

aaraadhanaa from innisfree house school, Bangalore

Class : Class 6

d

Ans 3:

anagh jain from Narayana, Gurgaon

Class : Class 6

c 3.2 cm

Ans 4:

Kavin Karthick M from DPS bangalore east, Bengaluru

Class : Class 6

Ans 5:

Vedant Gajare from New Horizon Scholar's School, Airoli

Class : Class 9

Ans 6:

Sesheta from DAV Centenary Public School, Chander Nagar, Ghaziabad

Class : Class 10

C. 3.2 cm

Ans 7:

KRITHYA GUPTA from LOTUS VALLEY INTERNATIONAL SCHOOL, NOIDA

Class : Class 7

Ans 8:

Karthik from , ANGUL

Class : Class 6

A

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Vartika Agarwal from Phoenix world school, Pune

Subject :NSO Class : Class 6

Prashant tested some food items and tabulated the results as follows.

Identify X, Y and Z and select the incorrect statement.

AY helps in formation of haemoglobin which carries oxygen from one part of the body to another.
BX helps in formation of antibodies in our body which fight infection and protect us from diseases.
CSame amount of Z provides more energy as compared to X.
DZ forms shock absorbing cushion around our internal organs.

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Ans 1:

Adyanika Satpathy from DPS International School, Singapore

Class : Class 9

Ans 2:

Akshara from sishya OMR , chennai

Class : Class 8

Ans 3:

Adyanika Satpathy from DPS International School, Singapore

Class : Class 9

Olx

Ans 4:

Adyanika Satpathy from DPS International School, Singapore

Class : Class 9

Ans 5:

Vartika Agarwal from Phoenix world school, Pune

Class : Class 9

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Vartika Agarwal from Phoenix world school, Pune

Subject :NSO Class : Class 6

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

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

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Ans 1:

Lakshmi from FPS, Bangalore

Class : Class 10

Ans 2:

Vartika Agarwal from Phoenix world school, Pune

Class : Class 9

Ans 3:

Iba khan from DPS GBN, Noida

Class : Class 6

Ans 4:

harry potter from hogwarts, hogsmeade

Class : Class 6

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yashmit singh from la blossom school, jalandhar

Subject :NSO Class : Class 5

Which of these is the most accurate description of air, based on the pie-chart?

A Two-thirds nitrogen, two-thirds oxygen, and one-tenth other gases
B Three-quarters oxygen and one-third nitrogen and other gases
C One-half nitrogen and one-half oxygen and other gases
D One-fifth oxygen and four-fifths nitrogen and other gases

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Ans 1:

Vihaan Patil from Bombay Scottish School, Mahim Mumbai

Class : Class 6

THE OPTIONS DO NOT MAKE SENSE

Ans 2:

Biju Pappachan from Rkc , Raipur

Class : Class 1

Question was very tricky how am I supposed to understand through a pie chart

Ans 3:

Goutham Ram from Lecole' Chempaka International, Trivandrum

Class : Class 5

At least say how much percentage of the different air are there.

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D HARSHINI from ST MARTINS HIGH SCHOOL CHINTAL, HYDERABAD

Subject :NSO Class : Class 9

Among the following cell organelles P, Q, R and S, which is the odd one out?

A S, because the others are membrane bound cell organelles.
B P, because the others are involved in cell secretion.
C R, because the others are involved in protein storage.
D Q, because the others are involved in energy production.

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Ans 1:

ICHALKARANJI from dkte, ichalkranji

Class : Class 8

yes your are right

Ans 2:

Harsh Gupta from AECS Narora, Narora

Class : Class 9

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Snigdha swaminath from Christ nagar higher secondary school , Trivandrum

Subject :NSO Class : Class 6

Take 10 mL of water in 6 test tubes each and add different samples of substances to each test tube as shown in the given figure. Shake the test tubes vigorously for a couple of seconds and leave them undisturbed. In which of these test tubes, sample substances will remain insoluble in water?

A 1, 2 and 3
B 2, 3 and 4
C 3, 4 and 5
D 4, 5 and 6

C is correct

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Ans 1:

Ayuni Pathak from Lotus Valley International school , Noida

Class : Class 6

is washing powder soluble

Ans 2:

RICHA BORAH from K V ANNA NAGAR, CHENNAI

Class : Class 7

Sugar ,salt and washing powder are soluble in water while sand ,chalk powder and saw dust are insoluble in water.

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naman test from DPS Pune, Pune

Subject :NSO Class : Class 6

Using the "conduction tester" on an object it was found that the bulb begins to glow. Is that object a conductor or an insulator? Explain.

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