National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
And:B

Ans 2:

Class : Class 7

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
Containers P & Q have hot water, R has cold water and S has ice. To show that water expands when heated - When water in the container Q is heated, it also heats up the water inside the conical flasks in Q. The water in conical flask thus expands and a rise in the level can be seen in the calibrated tube attached to the funnel (Image Q). To show that water contracts when cooled - When water in container S is cooled, it contracts. Due to contraction the water in conical flask thus shows a fall in the level of water in the calibrated tube attached to the funnel. (Image S) So, the right answer is Option B.

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
[D] ALL OF THESE

Ans 2:

Class : Class 6
YHMNP is nymphGAMGOT is maggotAVALR is larvaall of them undergo moulting that is shedding its skin before becoming an adult

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
how

Ans 2:

Class : Class 4
Yes correct ans is 68

Ans 3: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 4:

Class : Class 4

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 3
PVC is a thermoplastic

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Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 6
B

Ans 3:

Class : Class 4

Ans 4:

Class : Class 5
Salt water

Ans 5:

Class : Class 5
Salt water

Ans 6:

Class : Class 5
tough question

Ans 7:

Class : Class 5

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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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