National Science Olympiad Forum By SOF Olympiad Trainer - Page 554

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
tf

Ans 2:

Class : Class 6
groundwater sometimes have heavy metals such as lead and arsenic dissolved in them and hence is always not safe for drinking

Ans 3:

Class : Class 8
Answer is option'D'. Neither of the statements are correct. And SOF World, Please listen to our comments and reply to it and rectify your mistakes quickly,ASAP. Iam not here to scold you, but trying to advise you. So please, from the heart of all the students who are commenting(including me), rectify all your mistakes ASAP( AS SOON AS POSSIBLE)!!!!!!!!!!!!

Ans 4:

Class : Class 6
Groundwater is safe for drinking but is not free of soluble impurities and that is why we boil it, so the correct option is (C)

Ans 5:

Class : Class 7
Ground water is not always safe, it can contain soluble impurities like arsenic

Ans 6:

Class : Class 3
Let’s check whether the given statements are correct or incorrect:Statement 1: Groundwater is safe for drinking. ----- Correct.Statement 2: Groundwater is free from soluble impurities. ----- Correct.Groundwater is water that accumulates underground. Groundwater is safe for drinking, because it is naturally filtered through layers of rocks and soil. So it is free from soluble impurities. That means Statement 1 is correct, and Statement 2 is the correct explanation of Statement 1.Hence, the right answer is Option A.

Ans 7:

Class : Class 8
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.

Ans 8:

Class : Class 7

Ans 9:

Class : Class 9
Yes the option C is the correct as groundwater is not always safe

Ans 10:

Class : Class 3
Let’s check whether the given statements are correct or incorrect:Statement 1: Groundwater is safe for drinking. ----- Correct.Statement 2: Groundwater is free from soluble impurities. ----- Correct.Groundwater is water that accumulates underground. Groundwater is safe for drinking because it is naturally filtered through layers of rocks and soil. So it is free from soluble impurities. That means Statement 1 is correct, and Statement 2 is the correct explanation of Statement 1.Hence, the right answer is Option A.

Ans 11:

Class : Class 9
No ground water has impurities, minerals, gases and some microbes dissolved in it

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Subject :NSO    Class : Class 2

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
Adithi Keshava from National Center For Excellence , BangaloreClass : >Class 5 13 days agoOption C

Ans 2:

Class : Class 9
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

Ans 3:

Class : Class 4
Its C

Ans 4:

Class : Class 7
Option C

Ans 5:

Class : Class 7

Ans 6:

Class : Class 5
Not C the answer is D

Ans 7:

Class : Class 7
I HAVE NOOOOOOOOOOOOOO IDEA !!!!!!!!

Ans 8:

Class : Class 5

Ans 9:

Class : Class 5
i got noooooooo idea

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3

Ans 2:

Class : Class 5

Ans 3:

Class : Class 7
its [C] tailor bird

Ans 4:

Class : Class 5
Answer is B - Weaver bird.

Ans 5:

Class : Class 8
B weaver birds

Ans 6:

Class : Class 4
the answer is (B) weaver bird.

Ans 7:

Class : Class 3
B Weaver Bird

Ans 8:

Class : Class 5
BB

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6
Explaaaaaaaaaaaaaaaaaaaaaaiiiiiiiiiiiiiiiiiiiiiin

Ans 2:

Class : Class 4
PLEASE EXPLAIN

Ans 3:

Class : Class 5
ANSWER IS (a)

Ans 4:

Class : Class 5

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5
The stomach is also like a bean . Very confusing.

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