National Science Olympiad Forum By SOF Olympiad Trainer - Page 547

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Subject :NSO    Class : Class 8

Liquids and gaseous fuels have more advantages over solid fuels. Some of the advantages are
(i) Calorific value of liquid and gaseous fuels is higher than the solid fuels.
(ii) Liquids and gaseous fuels have higher ignition temperatures than the solid fuels.
(iii) Liquids and gaseous fuels are easier to store since solid fuels occupy lot of space.
(iv) Liquids and gaseous fuels burn completely, leaving no residue.
The correct advantages are

A (i), (ii) and (iii)
B (i), (iii) and (iv)
C (ii), (iii) and (iv)
D (i), (ii) and (iv).


Ans 1:

Class : Class 4
in the summary,it is already given that the first option is correct,still it dosent show so in the above question

Ans 2:

Class : Class 9
There is no fuel till now which can't burn without leaving any harmful residue.Thus , option A should be the answer

Ans 3:

Class : Class 8
C is the correct option , B is the wrong one

Ans 4:

Class : Class 8
C

Ans 5:

Class : Class 8
The information of study materials of this chapter from this site is wrong.Please rectify the data of study material.

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

Ans 2:

Class : Class 7
Please explain why D.....

Ans 3:

Class : Class 8
C

Ans 4:

Class : Class 7
ignore the prior comment....

Ans 5:

Class : Class 3
anwser will be C

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
Hi friend the ans is (D) 5. HOPE IT HELPS!!!!

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
universe is made of many galaxies .

Ans 2:

Class : Class 6
Universe is huge vast open space.. It contains galaxies, solar systems and celestial bodies etc.. No, one can say how universe begin .

Ans 3:

Class : Class 6
universe is made of many galaxies .

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
Liquid oxygen is impure so ans is B

Ans 2:

Class : Class 7
B

Ans 3:

Class : Class 7
B

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :NSO    Class : Class 5

X is a plant whose seeds are dispersed by wind whereas Y is a plant whose seeds are dispersed by animals. Which of the following holds true regarding plants X and Y?

AThe seeds of plant X may have either wings or hair like structures.
BThe fruits of plant Y may or may not be edible.
CThe seeds of plant X are dispersed in a small radius around parent plant whereas seeds of plant Y are dispersed to very far off places.
DBoth A and B


Ans 1:

Class : Class 8
It should be opt. D

Ans 2:

Class : Class 5
HOW WOULD THE PLANT/SEED HAVE WINGS!!!!!! PLEASE EXPLAIN.

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