National Science Olympiad Forum By SOF Olympiad Trainer - Page 706
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Aarna Jain from Shishukunj International Indore , Indore
Subject :NSO    Class : Class 5

Ans 1:

Rabi rajak from SHREE JAIN VIDYALAYA, Kolkata
Class : Class 5
And:B

Ans 2:

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

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SARTHAK from RPS, mahendergarh
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
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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Jaytra lohia from Lvis - noida, Ghaziabad
Subject :NSO    Class : Class 4

Ans 1:

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

Ans 2:

Srijata Biswas from Delhi Public School Newtown, Kolkata
Class : Class 9
[D] ALL OF THESE

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Jaytra lohia from Lvis - noida, Ghaziabad
Subject :NSO    Class : Class 4

Ans 1:

Aajani Datta from The Samhita Academy, Bangalore
Class : Class 5

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is C.

Ans 3:

Prerona Chatterjee from Delhi Public School North Kolkata, Kolkata
Class : Class 5

Ans 4:

AYAN GOYAL from SAINT ANTHONY SENIOR SECONDARIES SCHOOL , UDAIPUR
Class : Class 4
Yes correct ans is 68

Ans 5:

Aaron from universal, mumbai
Class : Class 5
how

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Preetha Joshi from ,
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:

Bhavya Sheth from Bright Day School, Vadodara
Class : Class 6
PVC is a thermoplastic

Ans 2:

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

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Debarshee Rakshit from DPS Megacity, Kolkata
Subject :NSO    Class : Class 5

Ans 1:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5
tough question

Ans 2:

Abhimanyu from Indira National School , Pune
Class : Class 5
when salt is added to water its density increases greatly.therefore it is very tough to push the plunger.

Ans 3:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
d

Ans 4:

RIDHASEN PRIYASEN SHAH from The Rajkumar College, Rajkot, Rajkot
Class : Class 4

Ans 5:

C P from NO, YES
Class : Class 5

Ans 6:

Praveena from Sri Sankara Senior Secondary, Chennai
Class : Class 5
Salt water

Ans 7:

Ashwak from Cambridge, Jalandhar
Class : Class 8
B

Ans 8:

Smita De from Bishop Cotton Girls School, BANGALORE
Class : Class 6

Ans 9:

Indranuj from Ryan International, Mumbai
Class : Class 9
Salt water

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Jaytra lohia from Lvis - noida, Ghaziabad
Subject :NSO    Class : Class 4

Ans 1:

Mainak Mitra from Air force school chabua, Dibrugarh
Class : Class 4

Ans 2:

Mainak Mitra from Air force school chabua, Dibrugarh
Class : Class 4

Ans 3:

Mainak Mitra from Air force school chabua, Dibrugarh
Class : Class 4

Ans 4:

Mainak Mitra from Air force school chabua, Dibrugarh
Class : Class 4

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Jaytra lohia from Lvis - noida, Ghaziabad
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is D.

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SAKSHAM GARG from bal bharti public school pitampura, New Delhi
Subject :NSO    Class : Class 2

Ans 1:

Mridul Jain from Shishukunj International School Indore, Indore
Class : Class 9
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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Vikash kumar Singh from ,
Subject :NSO    Class : Class 3

Ans 1:

from ,
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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