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Yash Bindal from Global Indian International School, Singapore
Subject :NSO    Class : Class 9

Match column I with column II and choose the correct option from the codes given below.

Column I Column II
P. Hot tea poured in saucer gets cooled faster. (i) Evaporation increases with increase in temperature.
Q. We feel more cold after a hot water bath than a cold water bath. (ii) Evaporation increases with decrease in humidity.
R. Water is cool in earthen pitcher during dry hot day. (iii) Evaporation increases with increase in wind speed.
S. We feel comfortable under a moving fan in summer. (iv) Evaporation increases with increase in surface area.


A P - (ii), Q - (i), R - (iii), S - (iv)
B P - (iii), Q - (iv), R - (ii), S - (i)
C P - (iv), Q - (i), R - (ii), S - (iii)
D P - (iv), Q - (ii), R - (iii), S - (i)


given answer is wrong.

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NANDAKISHOR from BHAVANS VIDYAMANDIR, COCHIN
Subject :NSO    Class : Class 5

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Suvan Shee from Chirec public school, Hyderabad
Subject :NSO    Class : Class 9

Study the given flow chart and choose the correct statements.
Sulphur + Coal powder + Common salt

(i) The property used to separate the mixture is solubility of different components in different solvents.
(ii) Sulphur is soluble in carbon disulphide, salt in water and coal is insoluble in both.
(iii) X is water and Y is carbon disulphide.

A (i) and (ii) only
B (ii) and (iii) only
C (i) and (iii) only
D All are correct.


its only 2 and 31 refers to chromatography

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Anunnakee Banerjee from Dr CL Metha Sishya OMR , Chennai
Subject :NSO    Class : Class 2

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Anunnakee Banerjee from Dr CL Metha Sishya OMR , Chennai
Subject :NSO    Class : Class 2

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Manish Saruparia from NPS Singapore, Singapore
Subject :NSO    Class : Class 2

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rahul from euroschool, Mumbai
Subject :NSO    Class : Class 3

Ans 1:

Avinita from NK Bagrodia Rohini , Delhi
Class : Class 3
c

Ans 2:

Ivan Tyagi from Chirec, Hyderabad
Class : Class 3
A

Ans 3:

Havi Jain from GEMS modern academy, Gurgaon
Class : Class 3
A

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Rikhil Taneja from IVY World School, Jalandhar
Subject :NSO    Class : Class 9

Select the incorrect differences between collenchyma and sclerenchyma.

Collenchyma Sclerenchyma
(i) It is made up of dead cells. Its cells are living.
(ii) Lumen or cell cavity is wide. Lumen or cell cavity is usually narrow.
(iii) It provides hardness to the region where it occurs. It keeps the organ soft.
(iv) Wall thickening is not uniform. Wall thickening is uniform.
(v) Pits are simple and straight. Pits are simple, oblique and may be branched.


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


I think correct answer is b. But SOF is saying it is c.

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Manish Saruparia from NPS Singapore, Singapore
Subject :NSO    Class : Class 2

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Rikhil Taneja from IVY World School, Jalandhar
Subject :NSO    Class : Class 9

Ans 1:

Dhruvan G from Indian School al Ghubra, Muscat
Class : Class 9
Any help why?

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