National Science Olympiad Forum By SOF Olympiad Trainer - Page 838

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 10
(a)livestocks,algae

Ans 2:

Class : Class 10
neem leaves

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
Convection is the transfer of heat through liquids or gases. Example: When cold air enters your home, it mixes with warm air. Heat energy is transferred to the cooler air, and the overall temperature of the room is lowered. Result: More energy is required to replace the heat transferred to the cooler air.

Ans 2:

Class : Class 9
BECAUSE IT IS AN INSULATOR.....IT CANNOT CONDUCT ELECTRICITY.....

Ans 3:

Class : Class 10
Metals that conduct heat allow free electrons to roam around, which vibrate and conduct energy, while heat insulators do the opposite.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
Wood doesn't even enter the liquid phase when it gets hot. It cannot even sublime.

Ans 2:

Class : Class 8

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
density of wood is less than water.

Ans 2:

Class : Class 6
its density

Ans 3:

Class : Class 6
Specific gravity/density

Ans 4:

Class : Class 7
wood floats in water because it weighs less than amount of water

Ans 5:

Class : Class 7
Wood floats in water as its density is less than the density of water

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 10
nO, IT GOES UNDER pure beta decay without any gamma radiation

Ans 2:

Class : Class 8
I don't think it does

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
1000 km

Ans 2:

Class : Class 7
Exosphere (10,000 kilometres from Earth's surface).

Ans 3:

Class : Class 6
exosphere

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 4
100 years

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
dead pool is a superhero character who looks like spider man

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8
Deadpool is a fictional anti hero.

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
sunflower

Ans 2:

Class : Class 5
D: sunflower

Ans 3:

Class : Class 10
Sunflower

Ans 4:

Class : Class 7
Sunflower is a day-blooming flower. It grows best in full sunlight. Sunflower oil is extracted from its seeds, which is widely used in cooki ng.

Ans 5:

Class : Class 7
Sunflower

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Class : Class 9
D: Sunflower

Ans 7:

Class : Class 7
Option D Sunflower

Ans 8:

Class : Class 5
Option D

Ans 9:

Class : Class 5
Option D

Ans 10:

Class : Class 4
D: Sunflower

Ans 11:

Class : Class 5
D : Sunflower

Ans 12:

Class : Class 7
sunflower

Ans 13:

Class : Class 4
sunflower

Ans 14:

Class : Class 4
Sunflower

Ans 15:

Class : Class 5
sunflower

Ans 16:

Class : Class 7
The fusion of pollen and egg cell leads to the formation of seed. Fusion of pollen and egg cell results in the formation of an embryo that further develops into a seed.

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