National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO Class : Class 7

Amit is given three pots of soil samples (X, Y and Z).
He found their percolation rates as following:
X: 40mL/min, Y:10 mL/min, Z: 20 mL/min
Select the correct classification of the soil samples on the basis of percolation rates.

AX-Loamy, Y-Clayey, Z-Sandy
BX-Sandy, Y-Clayey, Z-Loamy
CX-Sandy, Y-Loamy, Z-Clayey
DX-Clayey, Y-Sandy, Z-Loamy

SUPER EASY QUESTION

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Ans 1: (Master Answer)

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B

Ans 2:

Aparajita Biswas from Don Bosco School Silchar, SILCHAR

Class : Class 7

ANSWER = Option B

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Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune

Subject :NSO Class : Class 3

Which of the following groups contains only cooking methods?

ARoasting, boiling and pickling
BSteaming, grilling and canning
CRoasting, steaming and grilling
DGrilling, steaming and pickling

anwser a,c

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Ans 1:

Aiden Fernandes from NES International School Mumbai, Mumbai

Class : Class 6

Roasting,Boiling and pickling are also cooking methods.option a

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Kunsh Aneja from Deens Academy, Bangalore

Subject :NSO Class : Class 5

Find the missing figure which will continue the given figure pattern.

A

B

C

D

at least explain how

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Srinik Mandal from Delhi Public School Ruby Park, Kolkata

Subject :NSO Class : Class 5

Which statement is incorrect about the flood?

AIt is caused due to rise in water level in rivers.
BIt destroys crops and people are rendered homeless.
CIts effects can be reduced by planting more trees.
DIt causes less damage in areas with wooden houses.

Answer is d

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D

Wooden houses are not very strong. So, floodwater can easily break down wooden houses and carry away the debris.

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Kedar Kulkarni from Walnut School, Pune

Subject :NSO Class : Class 1

Sonu's grandmother told him that tonight, he can see a Full Moon. What will be the shape of the Moon tonight?

A

B

C

D

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Option D is the correct answer. It shows a full moon. Full Moon means we can see the whole round moon at night.

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Avani from NPS International singapore, singapore

Subject :NSO Class : Class 5

Radhika took three beakers and poured equal amounts of three different types of soils X, Y and Z into them as shown in the figure I.

She then poured equal amount of water into each beaker at the same time. Figure II shows the set-ups after the water has been added.

Identify type of soils X, Y and Z and select the correct statement.

AX type of soil is mostly found in deserts whereas Y type of soil is mostly found on sea shore.
BSoil X can hold adequate amount of nutrients.
CSoil X is difficult to plough whereas soil Z can be ploughed easily.
DBacteria and other soil organisms cannot breathe inside the soil X.

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B

Soil X, Y and Z represent loamy soil, sandy soil and clayey soil respectively. Y type of soil is mostly found in deserts as well as on sea shores. Soil Z is difficult to plough whereas soil Y can be ploughed easily. Bacteria and other soil organisms cannot breathe inside soil Z.

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Ayushree Barman from Sri Sri Academy, Kolkata

Subject :NSO Class : Class 6

Which of the following demonstrate friction role?
(i) A ball rolling
(ii) Slipping of a man on wet floor
(iii) Walking
(iv) Sleeping

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

How does the slipping of a man on a wet floor demonstrate friction? The solution given is wrong.