National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Ans is C because Black Gold is another name for coal.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
Tibia and Fibula(option C.)

Ans 2:

Class : Class 6
tibia and fibula

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Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement 1: Groundwater is safe for drinking.
Statement 2: Groundwater is free from soluble impurities.

ABoth statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
CStatement 1 is correct but statement 2 is incorrect.
DBoth statements 1 and 2 are incorrect.


Groundwater is free from soluble impurities is wrong. Ground water is free from suspended impurities but it contains dissolved gases, minerals and salts. Hence answer is C.

Ans 1:

Class : Class 6
No ground water has impurities, minerals, gases and some microbes dissolved in it

Ans 2:

Class : Class 6
Ground water is not always safe, it can contain soluble impurities like arsenic

Ans 3:

Class : Class 6
Some dissolved salts in water is essential for human body and groundwater is free from suspended impurities but it contains soluble things, hence the option is C.

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Subject :NSO    Class : Class 2

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Option C

Ans 2:

Class : Class 5
Adithi Keshava from National Center For Excellence , BangaloreClass : >Class 5 13 days agoOption C

Ans 3:

Class : Class 5
Sunita from Dps, Greater NoidaClass : >Class 5 about a minute agoAdithi Keshava from National Center For Excellence , BangaloreClass : >Class 5 13 days agoOption CAns 2:Adithi Keshava from National Center For Excellence , BangaloreClass : >Class 5 13 days agoOption C

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Explosion

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
the answer is (B) weaver bird.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 1

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
ANSWER IS (a)

Ans 2:

Class : Class 4
PLEASE EXPLAIN

Ans 3:

Class : Class 4

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