National Science Olympiad Forum By SOF Olympiad Trainer - Page 706
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Sushil Kumar from dpsnoida, Noida
Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Answer: B In the given setup, the plastic ball that is held at the greatest height from ground will possess maximum potential energy and vice versa. Hence ball Q will have highest potential energy and ball S will have the lowest potential energy.

Post Your Answer

Sushil Kumar from dpsnoida, Noida
Subject :NSO    Class : Class 5

Ans 1:

Rishi from Deens Academy, BENGALURU
Class : Class 7

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Answer : B Iron is present in huge amount in earth crust where it occurs in the combined state with other elements. Chief ores of iron are magnetite, hematite etc. Iron is extracted from these ores through a complicated process. Petroleum is fossil fuel that formed when large quantities of dead organisms were buried underneath sedimentary rocks and subjected to both intense heat and pressure. It is yellow to black liquid found in geological formations beneath the earth's surface.

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Iron is present in huge amount in earth crust where it occurs in the combined state with other elements. Chief ores of iron are magnetite, hematite etc. Iron is extracted from these ores through a complicated process. Petroleum is fossil fuel that formed when large quantities of dead organisms were buried underneath sedimentary rocks and subjected to both intense heat and pressure. It is yellow to black liquid found in geological formations beneath the earth's surface.

Post Your Answer

Sushil Kumar from dpsnoida, Noida
Subject :NSO    Class : Class 5

Ans 1:

Anwesha Kale from wisdom world school, pune
Class : Class 5
The given graph shows that amount of CO2 increases from time Q to R The increases in CO2 amount during interval Q R is indicative of activities like deforastation burning of fossil fuels increases in vehicular transport etc.

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The given graph shows that amount of CO2 increases from time Q to R. The increase in CO2 amount during interval Q – R is indicative of activities like deforestation, burning of fossil fuel, increase in vehicular transport etc.

Post Your Answer

Sushil Kumar from dpsnoida, Noida
Subject :NSO    Class : Class 6

Ans 1:

from Gitanjali Public School ,
Class : Class 8
c

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Answer: C 1 : Expansion of mercury in thermometer is a physical change which is reversible as mercury returns to its original position (contracts) on cooling. 2 : Breaking of glass is a physical change which is irreversible as broken pieces of glass cannot be joined back. 3 : Lighting LPG stove involves both physical and chemical changes. When LPG comes out of the cylinder it changes from liquid to gaseous state which is a physical change. Then the gas burns in the air which is a chemical change. 4. Boiling of an egg is a chemical change, liquid egg converts to solid egg having different texture and taste which is irreversible as boiled egg cannot be changed into original liquid form.

Post Your Answer

Sushil Kumar from dpsnoida, Noida
Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Answer: D The circuit will not be completed when one of the four bulbs blows off. Hence, all the bulbs P, Q, R and S will not glow

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

CHEERANJIT MOHANTA from MATHOPE, BHUBANESWAR
Class : Class 5
It will be C.

Ans 2:

Kenisha Tamboli from Mansukhbhai Kothari National School, Pune
Class : Class 6

Ans 3:

Dev from Ambassador , Dubai
Class : Class 9

Ans 4:

Harsh Sobti from the samhita academy, BLR
Class : Class 5

Ans 5:

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Class : Class 10
C

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

Suvan S from Edify School Chikkabanavara, Bangalore
Class : Class 7
Correct option is c.

Ans 2:

Avantika Raj from Delhi Public School, Bengaluru
Class : Class 9

Ans 3:

Ritam Das from BGKV, Kolkata
Class : Class 6

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

ishaan from lvis, noida
Class : Class 5
bruh google says lever

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
i think a someone explain

Ans 2:

Nakul Bhasker from National Public School Whitefield, Bangalore
Class : Class 5
Ritam Das, It is A as they asked which is the part WHERE work is done, not BECAUSE OF WHICH part is work done

Ans 3:

Vihaan Patil from Bombay Scottish School, Mahim Mumbai
Class : Class 6
IT IS option A

Ans 4:

RC from Vibgyor, Navi Mumbai
Class : Class 8
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 5:

Ritam Das from BGKV, Kolkata
Class : Class 6
Because of the load only we have to give the force. So option B

Ans 6:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6
It should be A as we apply or put force on the effort then only the load can be lifted so as per me the A is the correct answer

Post Your Answer