National Science Olympiad Forum By SOF Olympiad Trainer - Page 709
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Kalpana Dubey from R K SARDA VIDYA MANDIR, Raipur
Subject :NSO    Class : Class 5

Ans 1:

Rabi rajak from SHREE JAIN VIDYALAYA, Kolkata
Class : Class 5
C

Ans 2:

Akshat Jain from Delhi Public School, Greater Noida
Class : Class 8
The answer should be C

Ans 3:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 7

Ans 4:

Harjot Singh from GIIS KL, Kuala Lumpur
Class : Class 4
The answer should be C

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surya from bhavans, Nagpur
Subject :NSO    Class : Class 7

Ans 1:

Aparajita from Mount Litera Zee School, Vasco da gama
Class : Class 8
Option B is the correct answer

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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:

Aaron from universal, mumbai
Class : Class 5
how

Ans 2:

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

Ans 3: (Master Answer)

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

Ans 4:

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

Ans 5:

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

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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:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

C P from NO, YES
Class : Class 5

Ans 8:

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 9:

Ashwak from Cambridge, Jalandhar
Class : Class 8
B

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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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