National Science Olympiad Forum By SOF Olympiad Trainer - Page 239
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Dhairya Vinayak from Loyola High School, Patna
Subject :NSO    Class : Class 7

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Srija Das from Mount Carmel Convent School, Ahmedabad
Subject :NSO    Class : Class 7

Ans 1:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
Option C..

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Ayush Aman from Podar International school , Mehsana
Subject :NSO    Class : Class 7

Ans 1:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
Option C

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Srija Das from Mount Carmel Convent School, Ahmedabad
Subject :NSO    Class : Class 7

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Jyothsna Jayesh from Sishya School , Hosur
Subject :NSO    Class : Class 6

Ms. Shobhna conducted a science activity in following steps :
I : She made crystals of pure copper sulphate from an impure sample.
II : She dissolved the crystals in pure water to make a blue solution.
III : She added a metallic piece into the copper sulphate solution and after some time colour of the solution changed to green.
Which of the following statements is correct regarding this activity?

AStep I involves a physical change while steps II and III involve chemical changes.
BSteps I and II involve physical changes while step III involves chemical change.
CAll the steps involve physical changes.
DAll the steps involve chemical changes.

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DIVYA PRAKASH from ST.MICHAEL'S HIGH SCHOOL, PATNA
Subject :NSO    Class : Class 7

Read the following statements.
(i) _____ tissue is involved in transportation of food in plants.
(ii) Transpiration produces a____ pull in the plant that causes the water to move upwards.
(iii) ____ is the loss of water from leaves and other aerial parts of a plant.
(iv) ____ are known as soldiers of the body.
Select the option that correctly fills up the blanks in any two of the statements.

A (i)-Phloem; (iii)-Transpiration
B (ii)-Suction; (iv)-Platelets
C (i)-Xylem; (iv)-Leucocytes
D (iii) Transpiration; (iv) Plasma


the answer is a

Ans 1:

S Sujan Chakravarthi from CLM Sishya OMR, Chennai
Class : Class 10
Its option A......you're correct......

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Saanvi from Dehli Public School , Gurugram
Subject :NSO    Class : Class 4

Arpit carried out an experiment to find out which kind of container is best for keeping the food hot. He put the same amount of food into 4 containers made of different materials which were of the same size and thickness and placed them in the same external condition. The result of his experiment was recorded on the graph as shown.
Based on results, which container, P, Q, R or S, is the best for keeping the food hot?


A Container P
B Container R
C Container S
D Container Q

Ans 1:

Saanvi from Dehli Public School , Gurugram
Class : Class 4

Ans 2:

vedant from TSRS Aravalli, Gurgaon
Class : Class 5
c

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Ambati Daivik from Kendriya Vidyalaya, Dharwad
Subject :NSO    Class : Class 7

The given graph shows comparative account of temperature range in four habitats (P, Q, R and S). Which of the following can be inferred from the given graph?
(i) Animals inhabiting P may show starling colouration and arboreal adaptations.
(ii) Animals inhabiting Q have thick lips and leathery skin.
(iii) Plants present in S may have thick fleshy photosynthetic stems and leaves modified into spines.
(iv) Animals inhabiting S possess thick layer of subcutaneous fat and have very small body appendages as compared to animals inhabiting Q and R.
(v) Plants like Spruce, Acacia and Opuntia are commonly found in habitat P.
(vi) Animals found in R may show hibernation or seasonal migration.


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

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Dhairya Vinayak from Loyola High School, Patna
Subject :NSO    Class : Class 7

Ans 1:

Joshua Sen from Montfort Senior Secondary School, Roorkee
Class : Class 9
inspirationwhat

Ans 2:

kartick Somasundaram from san academy, chennai
Class : Class 1
inspiration means inhalation

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Sashwat Pattnaik from NPS BSK, Bangalore
Subject :NSO    Class : Class 7

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