National Science Olympiad Forum By SOF Olympiad Trainer - Page 820

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Arka Chakraborty from St. Patrick's Academy, Bengaluru, Bengaluru

Subject :NSO Class : Class 4

The graph shows Gaurav's marks for Mathematics. If Gaurav's total score was 336, how many more marks did he score in class test than in first term?

A 14
B 2
C 6
D 18

his marks in class test are not given. how can we find the answer ?

Ans 1:

Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 9

Ans 2:

Ibrahim Aslam from uttam, Ghaziabad

Class : Class 2

Ans 3:

Ibrahim Aslam from uttam, Ghaziabad

Class : Class 2

??????????????what?????????????????what???????????

Ans 4:

Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 9

question is wrong

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Dev Narayan Vinu from St. Thomas Residential School, Thiruvananthapuram

Subject :NSO Class : Class 4

Name of some fibres can be obtained by using the letters given in the following box.

Which of the following objects CANNOT be made using only these fibres?

ARugs
BCurtains
CRaincoats
DBoth A and C

Is it D or C

Ans 1:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Class : Class 7

Ans 2:

niyati from kv 2, delhi

Class : Class 4

Ans 3: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is C.

Ans 4:

Tejesh VB from GEMS New Millennium School, Al Khail, Dubai

Class : Class 8

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rittik singh from ,

Subject :NSO Class : Class 5

Which one of the following facts provides the best evidence that matter may exist as tiny particles which can move at random?

A A drop of oil forms a very thin layer on the surface of water.
B Most metals conduct electricity.
C People in an enclosed space soon notice when medicated oil is being used
D A quantity of air can be compressed into a much smaller volume.

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Ans 1:

EKLAVYA GONDULE from DPS BHILAI, Bhilai

Class : Class 7

Ans 2:

EKLAVYA GONDULE from DPS BHILAI, Bhilai

Class : Class 7

yes,Sharad you are right but can you explain

Ans 3:

Sharad Jain from Presidium, Ghaziabad

Class : Class 5

Hello ! It is C as when the smell is spread , People notice it at some other room . It's the same with perfume .

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BHAVYA GOYAL from Venkateshwar International School Sec 10 Dwarka New Delhi, New Delhi

Subject :NSO Class : Class 3

The table below shows the amount of water used by 4 different families in April, May, June and July. All 4 families watched a water conservation (save water) programme in May. Which family is likely to have understood the reason behind conservation of water?

(A) Family 1

(B) Family 2

(D) Family

kindly give explanation of this question

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is C. Because, after May, the consumption keeps getting lower which indicates that they started saving water.

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Jyothi from CMR NPS, Bengaluru

Subject :NSO Class : Class 6

Shruti in an experiment, put a healthy, green plant in different conditions during a day, at different times P, Q and R. The rate of oxygen absorbed or released by this plant is shown in the given graph.

Which of the following assumptions can be made about this experiment?

AAt time P, that plant was put in a dark cupboard.
BAt time Q, plant is not respiring because, no oxygen is being taken up.
CAt time Q, the plant was moved to a dark room.
DAt time R, the plant was put in a well lighted place.

The answer given by Olympiad trainer is B but We all know that plants respire all the time. May I know the right answer

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Ans 1:

Hrithik Peddireddy from Oakridge International School, Hyderabad

Class : Class 7

Ans 2:

Aadvik saini from Mvn sector 17, Faridabad

Class : Class 8

Ans 3:

P A Reyyansh from Ann Mary School, Dehradun

Class : Class 10

Ans 4:

Can I get Rank 35 darryl from Global Indian international school, Brawl stars

Class : Class 8

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Kushagra Shukla from Presidium dwarka, New Delhi

Subject :NSO Class : Class 4

Which of these statements is INCORRECT?

ACranes used to lift loads use pulleys.
BA wedge is made up of two inclined planes.
CFork is an example of lever.
DScrew is used to lower and raise things.

HOW ARE SCREWS USED FOR RAISING AND LOWERING

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Ans 1:

NIRMAY JOSEPH from St Columba's School, New Delhi , New Delhi

Class : Class 9

Ans 2:

Ishan Kapilbhai Barochiya from Mayoor Private School , Abu Dhabi

Class : Class 8

no chairs also use screws to go up nd down

Ans 3:

Priyanka Dahiya from St. Theresa's senior secondary Convent school , Karnal

Class : Class 5

fork can be considered as both 'Lever' and 'wedge'. answer should be D.

Ans 4:

Santina Suzanne from owis, bangalore

Class : Class 4

d is ans because pulley go up and down

Ans 5:

Santina Suzanne from owis, bangalore

Class : Class 4

what is master ans

Ans 6:

AniAdi from Cambridge public school, Bangalore

Class : Class 5

Screw is used to fasten things and not really used to lower and raise things.. Isnt D incorrect too?

Ans 7:

Ayaansh Singhal from Pinewood School, Saharanpur

Class : Class 8

please give the master ans

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Jeronee from Christwood School, PERUMBAKKAM

Subject :NSO Class : Class 3

Study the given diagram carefully and select the correct option regarding it.

ALeaves Q and R cannot make food.
BLeaves P and Q cannot make food.
CTo leaves Q and R, sunlight is not available.
DTo leaf P, water is not available.

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Ans 1:

Ashwak from Cambridge, Jalandhar

Class : Class 9

Yes, the figure is not clearly printed and the options are not too clear .

Ans 2:

Aarush from CA, Bengaluru

Class : Class 5

The figure is not clear. The options have not been printed correctly.

Ans 3:

Ashwak from Cambridge, Jalandhar

Class : Class 9

Ans 4:

ADHRIT SINGH from RPM ACADEMY, Gorakhpur

Class : Class 1

the figure is not printed correctly

Ans 5:

Isra Fathima from sophia high school, Bengaluru

Class : Class 7

the figure markings are not clearly printed.

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Krethick Ravichandran from FIITJEE GLOBAL SCHOOL , India

Subject :NSO Class : Class 3

We eat roots of many plants. Select the option that correctly identifies foods sourced from roots among (i)-(iv).

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

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is B.

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kushagraghuryani2016 from DPS, New Delhi

Subject :NSO Class : Class 5

The given diagram shows a hill with four labelled positions W, X, Y and Z. When a ball is rolled down the hill, then from which position will it finish rolling with the greatest speed?