National Science Olympiad Forum By SOF Olympiad Trainer

saikrishna from bharatiya vidhya bhavans public school, Hyderabad

Subject :NSO Class : Class 7

When high speed wind blows, an umbrella held upright sometimes get upturned. The reason being

A High speed wind creates a high pressure zone above and below the umbrella
B High speed wind creates a low pressure zone above and high pressure zone below the umbrella
C High speed wind creates a low pressure zone below and high pressure zone above the umbrella
D None of these

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Ans 1:

Saanjana from Vibgyor , Mumbai

Class : Class 8

Ans 2:

Harshitha Prakash from Kola Perumal Chetty Vaishnav Sr. Sec. School, Chennai

Class : Class 9

The answer is option B. Since the high speed winds create low pressure are, the umbrella would tend to move from high to low pressure area

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Aviral Yadu from Krishna Public School Dunda Raipur, Raipur

Subject :NSO Class : Class 7

Study the two groups of objects carefully. The objects are grouped according to _________.

AThe type of materials they are made of
BTheir uses
CTheir ability to float or sink in water
DTheir mass

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Ans 1:

ALICE from Delhi Public School, UDAIPUR

Class : Class 9

Ans 2:

lavnish kumar from o.p jindal school, ramghar

Class : Class 7

Their ability to float or sink in water

Ans 3:

lavnish kumar from o.p jindal school, ramghar

Class : Class 7

their ability to float or sink in water

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Krithik Mishra from Delhi Public School East, Bangalore

Subject :NSO Class : Class 3

Select the activity which will produce a different effect than the other three. A Fitting wheels on the bottom of a box to be dragged. B Putting oil on the hinges of a garage gate. C Tiling a cemented floor. D Replacing the laminated plastic board with cardboard for toy car racing.

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Aarav Sadhoo from Lotus Valley International School, Ghaziabad

Subject :NSO Class : Class 6

The diagram shows the direction of motion of a body of iron on a wooden floor. Which arrow shows the direction of friction?

AP
BR
CQ
DS

wrong

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Ans 1:

Krish kumar shrivastava from Little world school, Jabalpur

Class : Class 6

Wrong

Ans 2:

Mimansa from Oak buds school, Ramnagar

Class : Class 6

Hi

Ans 3:

Aarav Sadhoo from Lotus Valley International School, Ghaziabad

Class : Class 6

answer is S

Ans 4:

G.RAM DARSHAN from MONTESSORI HIGH SCHOOL, KURNOOL

Class : Class 6

fuck oof

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from st Joseph public school ,

Subject :NSO Class : Class 7

Pick the odd out from each series given below and select the correct option.

(i) Elephant, Monkey, Red-eyed frog, Polar bear
(ii) Loud voice, Bright colours, Strong tails, Wide and large paws
(iii) Alaska, Nigeria, Canada, Norway
(iv) Humidity, Rainfall, Soil, Wind speed

	(i)	(ii)	(iii)	(iv)
A	Polar bear	Wide and large paws	Nigeria	Soil
B	Red-eyed frog	Loud voice	Canada	Wind speed
C	Polar bear	Strong tails	Alaska	Rainfall
D	Red-eyed frog	Wide and large paws	Alaska	Humidity

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Samarth Parsai from Sri Sri Ravishankar Vidya Mandir, Indore

Subject :NSO Class : Class 3

Which Option will Fig. (X)?

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Pranjal Yadav from Sunbeam School Mughalsarai, Mughalsarai

Subject :NSO Class : Class 6

FREE NSO COURSE OR STUDY MATERIAL

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Anant Namdeo from Sagar Public School ,Dwarka Dham , Bhopal, Bhopal

Subject :NSO Class : Class 4

Dehydration is a method of preserving food by

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Aaditya thapa from LBS, Aashirwad neelanchal

Subject :NSO Class : Class 6

Beena sets up two experiments, as shown in the diagram below. She placed both the set-ups in sunlight for 9 hours. On noting down her observations for both set-ups she found that there was more oxygen collected in test tube X as compared to test tube Y. What conclusion could she best draw from this experiment?

AThe rate of photosynthesis decreases when there is more carbon dioxide.
BBaking soda is required for photosynthesis.
CCarbon dioxide is required by the plant for photosynthesis.
DThe rate of photosynthesis increases when there is more carbon dioxide.

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Anant Namdeo from Sagar Public School ,Dwarka Dham , Bhopal, Bhopal

Subject :NSO Class : Class 4

When We Use Candle After Some Minutes It

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