National Science Olympiad Forum By SOF Olympiad Trainer - Page 165

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Subject :NSO    Class : Class 8

Global warming leads to a rise in the sea level causing floods in the coastal areas. One of the main reasons of global warming is

A Combustion of fuels releases sulphur dioxide which increases the temperature
B Combustion of fuels releases carbon monoxide which decreases the temperature
C Combustion of fuels releases unburnt carbon particles which causes decrease in temperature
D Combustion of fuels releases carbon dioxide which causes increase in temperature.


Ans 1:

Class : Class 8

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6

Ans 2:

Class : Class 4

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
D

Ans 2:

Class : Class 8

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Subject :NSO    Class : Class 9

Given figures represent three different castes of a colony of honeybees.
image
Select the incorrect statement regarding these.

A P is the worker bee which is a sterile female.
B Q is the queen which lays both fertilised (2n) and unfertilised (n) eggs.
C R is the drone which is a fertile male.
D P and Q emerge from unfertilised eggs, while R emerges from fertilised eggs.


shouldn't it be A... Al bees other than the queen bee are males right?

Ans 1:

Class : Class 9
D

Ans 2:

Class : Class 10
D

Ans 3:

Class : Class 7
D

Ans 4:

Class : Class 5
D

Ans 5:

Class : Class 10
D is the correct answer.

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 1

Ans 1:

Class : Class 1
B is the answer

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