National Science Olympiad Forum By SOF Olympiad Trainer - Page 630

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Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 7
ANSWER SHOULD BE C

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 5
answer is option c

Ans 5:

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

Ans 6:

Class : Class 5

Ans 7:

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

Ans 8:

Class : Class 7
C is the answer to this question

Ans 9:

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

Ans 10:

Class : Class 5
sanskriti nagar is correct

Ans 11:

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

Ans 12:

Class : Class 8
Earth's magnetic field.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
please explain

Ans 2:

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

Ans 3:

Class : Class 9
d is an incomplete answer

Ans 4:

Class : Class 4
d is incomplete

Ans 5:

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 6:

Class : Class 3

Ans 7:

Class : Class 10
the answer is d

Ans 8:

Class : Class 7
D is an incomplete option .

Ans 9:

Class : Class 7
the last option is not understandable

Ans 10:

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

Ans 11:

Class : Class 7
d is incomplete

Ans 12:

Class : Class 7
D is an incomplete option

Ans 13:

Class : Class 9
Where is D?

Ans 14:

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

Ans 15:

Class : Class 8
d is grammatically incorrect

Ans 16:

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

Ans 17:

Class : Class 10

Ans 18:

Class : Class 9
D is incomplete answer

Ans 19:

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

Ans 20:

Class : Class 10
D IS INCOMPLETE OPTION.

Ans 21:

Class : Class 7
D is an incomplete option

Ans 22:

Class : Class 8
The whole statement isn't mentioned

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Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 7

Ans 3:

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 4:

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

Ans 5:

Class : Class 10
ans should be b

Ans 6:

Class : Class 10
the answer is b

Ans 7:

Class : Class 6
nope you are telling the opposite

Ans 8:

Class : Class 7
ok

Ans 9:

Class : Class 7
Totally agree with you Mannat

Ans 10:

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

Ans 11:

Class : Class 4

Ans 12:

Class : Class 6
nope you are telling the opposite

Ans 13:

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 14:

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 15:

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

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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 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.

Ans 2:

Class : Class 8
syu

Ans 3:

Class : Class 6
YOYOYOYOOOO

Ans 4:

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

Ans 5:

Class : Class 5

Ans 6:

Class : Class 2

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
Novosti

Ans 2:

Class : Class 5
Novosti

Ans 3:

Class : Class 5
Fishing rod changes speed of the fish

Ans 4:

Class : Class 9
Novosti

Ans 5:

Class : Class 7

Ans 6:

Class : Class 5
Novosti

Ans 7:

Class : Class 7
Novosti

Ans 8:

Class : Class 8
urenrjrjkvnm

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 4
It should be a

Ans 2: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 3:

Class : Class 10
shouldnt it be a

Ans 4:

Class : Class 8

Ans 5:

Class : Class 8
please explain

Ans 6:

Class : Class 10

Ans 7:

Class : Class 8

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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 7

Ans 2:

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

Ans 3:

Class : Class 5
d

Ans 4:

Class : Class 7

Ans 5:

Class : Class 4
A

Ans 6:

Class : Class 5
Option D

Ans 7:

Class : Class 8
its [D]

Ans 8:

Class : Class 8
its [D]

Ans 9:

Class : Class 8

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Subject :NSO    Class : Class 7

Ans 1:

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

Ans 2:

Class : Class 9
chlorine and UV rays are tertiary treatment

Ans 3:

Class : Class 8
SLUDGE IS THE SOLID WASTE

Ans 4:

Class : Class 10
Sludge settles down while scum stays up

Ans 5:

Class : Class 10
SCUM,SLUDGE.

Ans 6:

Class : Class 10
CSEDIMENTATIONSCUM.SLUDGE

Ans 7:

Class : Class 8
good

Ans 8:

Class : Class 8

Ans 9:

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

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