National Science Olympiad Forum By SOF Olympiad Trainer - Page 674

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
Earth's magnetic field.

Ans 2:

Class : Class 7
The correct option is C as all compasses are controlled by Earth's magnetic field.

Ans 3:

Class : Class 5
C is the answerIf you open synopsis in this chapter,it is clearly written that a compass works with the help of earth's magnetic field

Ans 4:

Class : Class 7
C (EARTH'S MAGNETIC FIELD)

Ans 5:

Class : Class 7
C is the answer to this question

Ans 6:

Class : Class 5
sanskriti nagar is correct

Ans 7:

Class : Class 5
answer is option c

Ans 8:

Class : Class 5

Ans 9:

Class : Class 1
If u don’t understand after reading the solution tell Siri to explain u

Ans 10:

Class : Class 6
Earth's magnetic field (C)

Ans 11:

Class : Class 7
ANSWER SHOULD BE C

Ans 12:

Class : Class 8
I still don't understand this question after reading the solution.😬😱

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
The whole statement isn't mentioned

Ans 2:

Class : Class 7
They have not written: Both B and C in the D option. Whereas, B is important in the D option.

Ans 3:

Class : Class 4
d is incomplete

Ans 4:

Class : Class 10
D IS INCOMPLETE OPTION.

Ans 5:

Class : Class 9
Where is D?

Ans 6:

Class : Class 7
d is incomplete

Ans 7:

Class : Class 9
D is incomplete answer

Ans 8:

Class : Class 10

Ans 9:

Class : Class 7
D is an incomplete option

Ans 10:

Class : Class 10
the answer is d

Ans 11:

Class : Class 9
please explain

Ans 12:

Class : Class 7
the last option is not understandable

Ans 13:

Class : Class 7
D is an incomplete option

Ans 14:

Class : Class 3
Turmeric indicator remains yellow in acidic (vinegar) and neutral solutions (common salt solution) and turns red in basic solution (soap solution and baking soda).

Ans 15:

Class : Class 10
Yes,it is wrong. Incomplete option

Ans 16:

Class : Class 8
OPTION D SHOULD BE ''BOTH B AND C

Ans 17:

Class : Class 8
d is grammatically incorrect

Ans 18:

Class : Class 7
the last option is incomplete the complete option should be Both B and C

Ans 19:

Class : Class 7
D is an incomplete option .

Ans 20:

Class : Class 3
so it is both b and c now ok guys.

Ans 21:

Class : Class 9
d is an incomplete answer

Ans 22:

Class : Class 3

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
nope you are telling the opposite

Ans 2:

Class : Class 7
Totally agree with you Mannat

Ans 3:

Class : Class 10
The answer is (C), but (B) can also be the answer.

Ans 4:

Class : Class 7
ok

Ans 5:

Class : Class 10
ans should be b

Ans 6:

Class : Class 6
Volcano is an opening on the surface of Earth’s crust. There are three types of volcanoes: (i) Active volcanoes are those which are currently erupting or have erupted in the last 10,000 years. (ii) The dormant volcanoes are in a state of sleep. This means that they had erupted in the past but can erupt again, however, at the moment they are asleep. (iii) Extinct volcanoes are those that have been inactive for thousands of years and are not expected to erupt again. The liquid that comes out of a volcano is called lava. Richter scale measures magnitude of earthquakes and was developed by Charles Richter in 1935.

Ans 7:

Class : Class 1
The correct Ans is B and I did B but SOF is telling me I did C. Impossible and I am telling the truth I swear.

Ans 8:

Class : Class 5
From Athiya Mahapatra: option)c As the Upper layer of Earth is called Crust. The liquid which flows outside a volcano is called lava and Richter Scale is used to measure intensity of earthquakes.

Ans 9:

Class : Class 4

Ans 10:

Class : Class 10
Sorry, I had was to mark this one only, but instead of (C), I clicked on (B)!

Ans 11:

Class : Class 6
nope you are telling the opposite

Ans 12:

Class : Class 10
I feel the (B) should be the correct answer, so please explain why (C) is the correct one.

Ans 13:

Class : Class 7
When it's inside a volcano, it's called magma. When it's out, it's called lava.

Ans 14:

Class : Class 10
the answer is b

Ans 15:

Class : Class 7

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
First of all, fish, crocodile and snakes, all these three are egg laying animals. Secondly, all of them are cold blooded animals. And thirdly, all of them are covered with scales. And therefore, statements 1, 2 & 3 are correct. That is why option C is correct.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
got a little confused here but sorted it out

Ans 2:

Class : Class 5

Ans 3:

Class : Class 2

Ans 4:

Class : Class 8
syu

Ans 5:

Class : Class 6
YOYOYOYOOOO

Ans 6:

Class : Class 6
Ans is C because 0 minutes was 20 degrees celsius. Then, we were adding 6 after 2, 4, 6 minutes and so on. 1 is half of 2, and 1+2=3. So we should take normally 26 degrees celsius+(Half of 6) degrees celsius=26 degrees celsius+3 degrees celsius=29 degrees celsius.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
Novosti

Ans 2:

Class : Class 8
urenrjrjkvnm

Ans 3:

Class : Class 7
Novosti

Ans 4:

Class : Class 5
Novosti

Ans 5:

Class : Class 7
Novosti

Ans 6:

Class : Class 5
Novosti

Ans 7:

Class : Class 8

Ans 8:

Class : Class 5
Fishing rod changes speed of the fish

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 4
It should be a

Ans 3:

Class : Class 10
shouldnt it be a

Ans 4: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 5:

Class : Class 8
please explain

Ans 6:

Class : Class 8

Ans 7:

Class : Class 10

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
Answer is A (L) after the instruction the sequence is : N P S I L 4 W R 9 U F 7 S Y And then u get the answer

Ans 2:

Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7

Ans 4:

Class : Class 8
its [D]

Ans 5:

Class : Class 6
Option D

Ans 6:

Class : Class 5
d

Ans 7:

Class : Class 4
The correct option is -(D)

Ans 8:

Class : Class 8
its [D]

Ans 9:

Class : Class 4
A

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 10
Sludge settles down while scum stays up

Ans 2:

Class : Class 9
Sludge settles while scum floats .you are right

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8
yeah...sludge settles and scum floats.

Ans 5:

Class : Class 9
chlorine and UV rays are tertiary treatment

Ans 6:

Class : Class 8
good

Ans 7:

Class : Class 10
SCUM,SLUDGE.

Ans 8:

Class : Class 8
SLUDGE IS THE SOLID WASTE

Ans 9:

Class : Class 10
CSEDIMENTATIONSCUM.SLUDGE

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