National Science Olympiad Forum By SOF Olympiad Trainer - Page 497

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

Class : Class 9
the answer is D

Ans 3:

Class : Class 3
Cobalt, Nickel, and Steel are magnetic materials. But Stainless Steel is non-magnetic. There are several different types of stainless steel. The two main types are austenitic and ferritic. Ferritic stainless steels are generally magnetic, while austenitic stainless steels usually are not. Austenitic stainless steel is stainless steel added with nickel. so, the correct answer is Option D.

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Subject :NSO    Class : Class 1

Ans 1:

Class : Class 2
answer should be B . Plant cannot die in absence of 1 food

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9

Ans 2:

Class : Class 6
a

Ans 3:

Class : Class 8

Ans 4:

Class : Class 4
aswer a jojojojojojojojojojojooojojjjjjojjojjjojoojjjooooojjjjjjjoooojjojojojojojojoo

Ans 5:

Class : Class 6
a

Ans 6:

Class : Class 8
Metal P expands less then Q and metal Q expands less than R. So, metal P expands less than R. If a bimetallic strip is heated it bends with metal which expands more on the outside and the metal which expands less in the inside. So the strip should bend downwards to complete the circuit for the bell to ring.Answer- A.

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Subject :NSO    Class : Class 6

Read the following passage carefully. P is found abundantly in cod liver oil and is important for visual efficiency. Q is sourced from amla, tomato and citrus fruits and its deficiency may cause wounds to take longer time for healing. R is formed in our body in presence of sunlight and its deficiency in toddlers may cause deformity of legs.Now select the incorrect option regarding this.

AP can be found in spinach but not R.
BIn absence of R our body will show calcium deficiency even if it is abundant in our food.
CQ is also called B-complex as many of its varieties are available.
D P cannot be dissolved in water.


Ans 1:

Class : Class 5
yes.citrus fruit is vitamin c

Ans 2:

Class : Class 7
Q is vitamin C ,not B.

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Subject :NSO    Class : Class 5

Three different species of plants were selected by scientists who wanted to document their methods of seed dispersal. The graphs below show the approximate number of seedlings found at various radii around the parent plant.

What are the correct methods of seed dispersal of each plant?

Species 1 Species 2 Species 3
A Water Explosion Animal
B Wind Animal Water
C Wind Animal Explosion
D Explosion Water Animal


A very tough question

Ans 1:

Class : Class 3
C) Seeds which are dispersed by wind are usually carried to far off places due to their small size and light weight, e.g. , seeds of cotton and dandelion. similarly, seeds dispersed by water are also light and can easily float and carried to far off places by water, e.g. , seeds of coconut. dispersed by animals seeds of guava can be carried by human beings and animals to nearer as well as long distance from the parent plant. Explosive action of some seeds peas and balsam scatter away from the parent plant but it usually cannot enable the seeds to be dispersed far off places.

Ans 2:

Class : Class 7

Ans 3:

Class : Class 5
Answer is C

Ans 4:

Class : Class 5
ANS IS C!!!!!!!!!!!!!!!!!!!!!

Ans 5:

Class : Class 3
C) Seeds which are dispersed by wind are usually carried to far off places due to their small size and light weight, e.g. , seeds of cotton and dandelion. similarly, seeds dispersed by water are also light and can easily float and carried to far off places by water, e.g. , seeds of coconut. dispersed by animals seeds of guava can be carried by human beings and animals to nearer as well as long distance from the parent plant. Explosive action of some seeds peas and balsam scatter away from the parent plant but it usually cannot enable the seeds to be dispersed far off places.

Ans 6:

Class : Class 8
thanks

Ans 7:

Class : Class 8
C

Ans 8:

Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
Hi!! I am nivedhini you are answered my question please see that again

Ans 2:

Class : Class 9
what do you want to say Nivedhini i'm not able to understand you,there are much gramatical mistakes

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 2

We should not skip 'X' meal because body requires it the most after hours of gap between meals. What is 'X'?

A Evening snacks
B Dinner
C Lunch
D Breakfast


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Ans 1:

Class : Class 5
Dinner

Ans 2:

Class : Class 5

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
it is a

Ans 2:

Class : Class 9
It should be A

Ans 3:

Class : Class 4

Ans 4:

Class : Class 9
It's supposed to be A, right?

Ans 5:

Class : Class 9
the answer on brainly is correct. cannot paste here- but a hint- better to use formula then logic sometimes

Ans 6:

Class : Class 6

Ans 7:

Class : Class 8
total distance / total time = average speed

Ans 8:

Class : Class 4
I thought it was a

Ans 9:

Class : Class 7
shoulda be option A average of 10 and 20 is 15, NOT 13.3

Ans 10:

Class : Class 10
it is a bing says so

Ans 11:

Class : Class 8
why isnt it a?

Ans 12:

Class : Class 7
it is a

Ans 13:

Class : Class 6
Why?

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6
d

Ans 2:

Class : Class 7
Correct answer is D

Ans 3:

Class : Class 4
A

Ans 4:

Class : Class 8
b

Ans 5:

Class : Class 7
b

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