National Science Olympiad Forum By SOF Olympiad Trainer

Amrik Pal from Kendriya Vidyalaya DRDO, Bangalore

Subject :NSO Class : Class 7

Refer to the given flow chart and select the option which correctly identifies P, Q, R and S.

	P	Q	R	S
A	Relative humidity	Wind speed	Thermo-meter	Rain gauge
B	Wind speed	Relative humidity	Thermometer	Psychrometer
C	Relative humidity	Wind speed	Psychrometer	Raingauge
D	Wind speed	Relative humudity	Thermometer	Rain gauge

ddddd

Ans 1:

Preethi from KKIS, Singapore

Class : Class 7

Where is the solution to this answer

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Akshara from NPS, Bengaluru

Subject :NSO Class : Class 8

Which of the following statements about plastics are true?
(i) All plastics do not have same arrangement of monomer units.
(ii) Melamine resists fire and can tolerate heat better than other plastics.
(iii) Plastics with cross-linked monomers are also known.
(iv) Plastics have limited applications.

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

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Ans 1:

Vihaan Nair from Ambassador School, DUBAI

Class : Class 8

Ans 2:

Loya Vedant Purushottam from L.k.r.r. prince English CBSE schools, selu, Selu

Class : Class 8

C

Ans 3:

Aarnav Appasaheb Pacharne from SHRI SHIVAJI PREPARETARY MILITRY DAY SCHOOL PUNE, pune

Class : Class 3

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Dushyant Singh from Shree Ram Centenial School, Indore

Subject :NSO Class : Class 6

Three burning candles are covered with glass jars as shown in figures. Equal amount of air, CO₂ and O₂ are present in jars X, Y and Z, respectively. Arrange the candles in decreasing order of the time for which they will continue to burn.

A Z, X, Y
B X, Y, Z
C X, Z, Y
D Z, Y, X

a is the answer

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Ans 1:

Ishita Mishra from BGS, Bangalore

Class : Class 6

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Gaurika Bhasin from Genesis global school, Noida

Subject :NSO Class : Class 2

Study the given figure. Which of the following best represents X and Y?

A X - Mustard, Y - Sunflower
B X - Coconut, Y - Sunflower
C X - Sunflower, Y - Groundnut
D X - Groundnut, Y - Mustard

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Ans 1:

Sreyas from Don Bosco, Park Circus, Kolkata

Class : Class 5

disgusting

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nishant from dav, begusarai

Subject :NSO Class : Class 10

Three identical resistors are connected across a voltage source V such that one of them is in parallel with other two, which are connected in series as shown. The power dissipated through the first one, compared to the power dissipated by each of the other two is _______.

AThe same
BHalf as much
CTwice as much
DFour times as much

it should be c

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Shanaya Siddhartha from Bal Bharati Public School, Navi Mumbai

Subject :NSO Class : Class 2

Ashok's house is built on wooden logs and it has sloping roofs. Ashok most probably be residing in a place where ________.
1. Flood is common
2. Heavy rainfall occurs
3. Snowfall occurs
4. Earthquakes are common

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

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Ayushman Atreya from Little Heart Toddlers Academy, Angul

Subject :NSO Class : Class 3

What is the function of part P of a mango fruit?

A It gives sweet taste to the fruit.
B It helps in ripening of fruit.
C It gives rise to a new mango plant.
D None of these

WKOJFOK

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Ans 1:

Ayushman Atreya from Little Heart Toddlers Academy, Angul

Class : Class 3

Ans 2:

Alyona mohapatra from Morden Vidya Niketan, Faridabad

Class : Class 3

c

Ans 3:

Kashika Goel from DPS Noida, Noida

Class : Class 7

Ans 4:

Advay and Aahan Rustagi from Vidyashilp Academy , Bengaluru

Class : Class 5

KA0060-03-C-070

Ans 5:

Ayushman Atreya from Little Heart Toddlers Academy, Angul

Class : Class 3

KK[[KFKF[KF[K[PKP[K[FKF[PK[K[PDK

Ans 6:

Achyut Rai from THE KHAITAN SCHOOL, NOIDA

Class : Class 7

c

Ans 7:

Varnika Girish from Dimension Intermational School, Singapore

Class : Class 2

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KARTIK SHINDE from Delhi Public school Rau Indore , indore

Subject :NSO Class : Class 5

Amit celebrates his birthday on 28^th September 20XX. If the day before yesterday was Amit's birthday, then today is________.

ASunday
BMonday
CSaturday
DThursday

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Ans 1:

SAPTARSHI DAS from VIVEKANANDA MISSION SCHOOL, KOLKATA

Class : Class 7

SUNDAY

Ans 2:

ABHINABA SEN from NAVY CHILDREN SCHOOL , NAUSENA BAUGH ,NSB, VISAKHAPATNAM

Class : Class 5

MONDAY

Ans 3:

Abhijeet Kumar Jha from New Era Senior Secondary School, Nizampura, Vadodara

Class : Class 5

MONDAY

Ans 4:

Adway Jha from DPS Whitefield, Bangalore

Class : Class 7

Sunday.

Ans 5:

Abhigyan Panja from HEMSHEELA MODEL SCHOOL, DURGAPUR

Class : Class 5

Ans 6:

Abhijeet Kumar Jha from New Era Senior Secondary School, Nizampura, Vadodara

Class : Class 5

SUNDAY

Ans 7:

Abhijeet Kumar Jha from New Era Senior Secondary School, Nizampura, Vadodara

Class : Class 5

MONDAY

Ans 8:

Varalika Srivastava from ITL Public School, New Delhi

Class : Class 5

Sunday

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Abhijay Saha from Delhi Public School, Megacity, Kolkata

Subject :NSO Class : Class 3

You are making a model of the Earth and the Moon to show their relative sizes. If you take volley ball as Earth, then _________ can be taken as the Moon.

A Soccer ball
B Table tennis ball
C Basket ball
D Football

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Ans 1:

Nishantkumar from KIIT INTERNATIONALSCHOOL, BHUBANESWAR

Class : Class 5

Football

Ans 2:

Kashika Goel from DPS Noida, Noida

Class : Class 7

table tennis ball moon is always smaller than earth

Ans 3:

Nishantkumar from KIIT INTERNATIONALSCHOOL, BHUBANESWAR

Class : Class 5

Football

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ANUSHKA SAHA from ST. JOSEPH'S CONVENT, CHANDANNAGAR

Subject :NSO Class : Class 7

In a pressure-kerosene stove,
(i) We pump kerosene and convert it into vapours.
(ii) The vapours are then ignited.
Which of the following is true about the above statements?

A (i) is a chemical change; (ii) is a physical change.
B (i) is a physical change; (ii) is a chemical change.
C Both (i) and (ii) are physical changes.
D Both (i) and (ii) are chemical changes.

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Ans 1:

Atul Sanjeev from Indian School Al Ghubra, Muscat

Class : Class 9

Ans 2:

Shaurya from Mris 51 Gurugram, Gurugram

Class : Class 7

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