National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 1

Ans 1:

Class : Class 7
The Answer is Moon , which is the option (d) .

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Subject :NSO    Class : Class 7

To prepare a blood smear slide a student placed a drop of blood on a glass slide and added a drop of distilled water to dilute the blood. He then added stain (a coloured chemical used to see the cells) to it before placing the coverslip over it. When viewed, under the microscope he could not see the blood cells. Which of the following best explains this?

AThe blood cells had burst.
BThe blood had dried before the water was added.
CThe drop of water diluted the blood too much and cells dispersed too far away from each other.
DThe water caused the cells to shrink.


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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
the answer's B (I accidently clicked on C)

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Subject :NSO    Class : Class 6

What are the characteristics of metals?

A Good conductors of electricity and heat; solid at room temperature; transparent, shine brightly when polished.
B Good conductors of electricity and heat; solid at room temperature; opaque except in extremely thin films; do not shine at all when polished.
C Bad conductors of electricity and heat; solid at room temperature; opaque except in extremely thin films.
D Good conductors of electricity and heat; solid at room temperature; opaque except in extremely thin films; shine brightly when polished.


answer is a extremely simpleclearbahut Hassan saval

Ans 1:

Class : Class 6
Answer should be B..

Ans 2:

Class : Class 6
Except the metal Mercury all metals are solid at room temprature. Thus the answer shoul be B.

Ans 3:

Class : Class 6
d

Ans 4: (Master Answer)

Class : Class 1

D

Except mercury all the metals are solid at room temperature.


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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
Is asbestos an animal fibre?

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Subject :NSO    Class : Class 4

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