National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
how

Ans 2:

Class : Class 4
Yes correct ans is 68

Ans 3:

Class : Class 5

Ans 4: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 5:

Class : Class 5

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Subject :NSO    Class : Class 8

Read the statements given below and choose the correct option.
Statement 1 :Thermosetting plastics which when moulded once, cannot be softened by heating.
Statement 2 : PVC is a thermosetting plastic.

ABoth statements are correct and statement 2 is correct explanation of statement 1.
BBoth statements are correct but statement 2 is not a correct explanation of statement 1.
CStatement 1 is correct but statement 2 is incorrect.
DBoth statements are incorrect.


What plastic is PVC?

Ans 1:

Class : Class 8
PVC is actually a very hard type of plastic which is used to make pipes,water bottles,etc.

Ans 2:

Class : Class 4
PVC is a thermoplastic

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Salt water

Ans 2:

Class : Class 5
Salt water

Ans 3:

Class : Class 6

Ans 4:

Class : Class 5
d

Ans 5:

Class : Class 5
tough question

Ans 6:

Class : Class 5
when salt is added to water its density increases greatly.therefore it is very tough to push the plunger.

Ans 7:

Class : Class 5
B

Ans 8:

Class : Class 4

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 4

Ans 3:

Class : Class 4

Ans 4:

Class : Class 4

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 6
Photosynthesis is the process by which plants and some protistans use the energy of the Sun to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things. The conversion of unusable sunlight is associated with a green pigment called chlorophyll. Julius Von Sachs(1832-1897) , a German botanist and physiologist initiated experimental plant physiology to study in the effects of light and heat on plants and how plants get their food. In 1854, Sachs showed that plants produce sugar with the help of a green pigment called chlorophyll. Sachs also showed that chlorophyll is not spread throughout the plant, instead it is present only on the leaves. Which is why leaves are green in color.

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Subject :NSO    Class : Class 3

Ans 1:

Class :
The festival of lights is Diwali and it falls in the month of October or November. Correct Answer is C. Between Gandhi Jayanti ie. 2nd Oct and Christmas i.e. 25th December

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Subject :NSO    Class : Class 5

Read the given statements and select the correct option.
Statement 1: Naphthalene balls kept in woollen clothes reduce in size after sometime.
Statement 2: Solid naphthalene balls change into gas due to the warmth of woollen clothes.

ABoth statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
CStatement 1 is correct but statement 2 is incorrect.
DBoth statements 1 and 2 are incorrect.


can somebody explain ,,how warmth comes from stored woollens

Ans 1:

Class : Class 6
Option (a)

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
sand does not absorb water and allows water to pass through it .similarly water in 2nd container absorbs water more than 3rd container . same happens in1st and 3rdcontainers

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Subject :NSO    Class : Class 5

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