National Science Olympiad Forum By SOF Olympiad Trainer - Page 464

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 10
it should be h2o instead of h2

Ans 3:

Class : Class 8

Ans 4:

Class : Class 5
yes

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 10
Child's play though. calorific value=heat/unit mass of the fuel burnt =180,000/4.5 =40000 kJ/kg it is a question from our very own NCERT TEXTBOOK.

Ans 2:

Class : Class 10
Exactly.

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 10
Sulfur dioxide and chlorine are not produced because CNG is composed of methane. The fact that it produces large amount of carbon dioxide is not helpful or advantageous by any means. Whether it is used in compressed form or not does not make it eco-friendly; but, yes, it produces no smoke SPM upon combustion. So correct answer is (B).

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8

Ans 4:

Class : Class 9
totally wrong

Ans 5:

Class : Class 8
What is "Apache tomcat error"? I wrote a long answer and it vanished.

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
But it can also be c

Ans 2:

Class : Class 10
A because co2 does not support burning

Ans 3:

Class : Class 5
A

Ans 4:

Class : Class 10
A: Carbon dioxide gas does not support burning.

Ans 5:

Class : Class 4

Ans 6:

Class : Class 7
it can also be c because oxygen gas present in the air is necessary for burning

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 4
answer is b

Ans 2:

Class : Class 6
Yeah, it is A.

Ans 3:

Class : Class 8
B

Ans 4:

Class : Class 6
what are you saying it is a

Ans 5:

Class : Class 6
B, anybody marking something else is mad.

Ans 6:

Class : Class 7
yeahhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Ans 7:

Class : Class 7
its not B, we can't just casually fix a glass if its broken

Ans 8:

Class : Class 2
somone

Ans 9:

Class : Class 6
It is A

Ans 10:

Class : Class 8
depends on the weather

Ans 11:

Class : Class 6

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
It's surely D

Ans 2:

Class : Class 7
IT IS C

Ans 3:

Class : Class 7
BIT GOOD

Ans 4:

Class : Class 7
HURRAYWOWALASBEWAREBRAVO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Ans 5:

Class : Class 8
D

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
No, it is correct because they never said that the stick was put upright.

Ans 2:

Class : Class 10
By tribal mushroom logical kick from New

Ans 3:

Class : Class 8

Ans 4:

Class : Class 10
ok sorry I think that they asked for comparing them and not telling whether there is shadow or not

Ans 5:

Class : Class 10
By tribal mushroom logical kick from Ne thug girl

Ans 6:

Class : Class 4

Ans 7:

Class : Class 7

Ans 8:

Class : Class 10
The answer is ( a) . whoever posted the first answer is wrong.the answer is (a ) because the length of the shadow is the shortest at noon

Ans 9:

Class : Class 7
dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

Ans 10:

Class : Class 4
IT SHOULD BE D!!!!!!

Ans 11:

Class : Class 6
the shadow will be none(null) according to theory that there shall be no shadow at all. thus the answer is (D)

Ans 12:

Class : Class 10
there won't be any shadow because the sun is right above the stick

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Answer: B Explanation: Arrange the Question mathematically to get the following:- (1617/ 7) X 6 because 1617/7's 6th multiple is written in this way - (1617/ 7) X 5 because 1617/7's 5th multiple is written in this way. Calculate this like this:- 1617 / 7 = 231. So, (1617/ 7) X 6 = 231 X 6 = 1386 And, (1617/ 7) X 5 = 231 X 5 = 1155. Thus, we can calculate, 1386-1155 = 231 Hence, option B, with 231 as the answer, is correct.

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