National Science Olympiad Forum By SOF Olympiad Trainer - Page 506

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6

Ans 2:

Class : Class 6

Ans 3:

Class : Class 7

Ans 4:

Class : Class 3
answer is d !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11

Ans 5:

Class : Class 8
Answer is B because hyena is a scavenger, others are carnivores

Ans 6:

Class : Class 1

Ans 7:

Class : Class 3
I think B is the correct answer because mosquitos and leeches suck blood that they get from humans and animals but butterflies eat nectar that they get from plants

Ans 8:

Class : Class 6
Correct answer is B

Ans 9:

Class : Class 9
D

Ans 10:

Class : Class 5
I think it is C becuse mosquitoes andleeches suck blood but a butterfly such nectar. Or it can be B.

Ans 11:

Class : Class 7
The answer is option (d) becausei) cows , buffaloes and goats have their food in the same manner called chewing the cud.ii) Lions , wolves and hyena have their food in the same manner called tearing the flesh.iii) Butterflies, mosquitoes and leeches have their food in the same manner called sucking the food.Hence the correct answer is option (d)

Ans 12:

Class : Class 3
The correct ans is D

Ans 13:

Class : Class 4
I think right answer will be B as hyena is a scavenger but others are carnivores

Ans 14:

Class : Class 7

Ans 15:

Class : Class 7
I think ans B as Hyena is a scavenger and others are predators...

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 9
ojoo;j 9pu i jp[yuj7u\ p i[u0y7h'p/ 00ujy7mb[o

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
Silk smells like charred meat

Ans 2:

Class : Class 5

Ans 3:

Class : Class 8
Smell of burning silk is charred meat, where as smell of burning wool is as burned hair. So answer should be (D).

Ans 4:

Class : Class 6
It should be wool I even looked it up on the internet. It should be wool!

Ans 5:

Class : Class 3
It should be wool. The smell of silk is charred meat.

Ans 6:

Class : Class 7
Exactly, silk smells like charred meat...and wool smells like burning hair.

Ans 7:

Class : Class 6
wooooooooooooooooooooooooooooooooooooooooooooooooooooool

Ans 8:

Class : Class 6
woolwooolwoooooooooooooool

Ans 9:

Class : Class 8
Wool

Ans 10:

Class : Class 7

Ans 11:

Class : Class 6
wool.wool.wool.wool.wool.

Ans 12:

Class : Class 6
wooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooollllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll

Ans 13:

Class : Class 8
Yes the answer should be wool

Ans 14:

Class : Class 8
It should be wool. D is the correct answer.

Ans 15:

Class : Class 6
c is correct as the question is saying of pure fabric so the ans. should be c google --(Silk is formed of animal protein secretion of silkworms. Hence , when burnt it smells like hair , which is also composed of animal protein.

Ans 16:

Class : Class 6
wooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooool

Ans 17:

Class : Class 8
SOF Master Answer Please explain . The answer should be WOOL

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3

Ans 2:

Class : Class 7
11

Ans 3:

Class : Class 3
Study the given food web and select the correct option for the following questions. How many food chains are there in the food web? A 9 B 11 C 13 D 16ans is c

Ans 4:

Class : Class 6

Ans 5:

Class : Class 7
11 is correct acd acdi acde acdef acdefg acdeg hcdef hcde hcdeg hcd hbg

Ans 6:

Class : Class 7
I think there are 9 food chains at all. Please check the diagram of the food web.

Ans 7:

Class : Class 6
no 9

Ans 8:

Class : Class 5
ans 9

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Subject :NSO    Class : Class 6

Which of the following statements is incorrect about the asteroids?

AThey are planet like objects, but smaller and often irregularly shaped.
BMajority of asteroids orbit in the asteroid belt between the orbits of Mars and Jupiter.
CAsteroids mainly composed of mineral and rock.
DVesta is the largest and most massive asteroid discovered.


from https://en.wikipedia.org/wiki/4_Vesta: Vesta (minor-planet designation: 4 Vesta) is one of the largest objects in the asteroid belt, with a mean diameter of 525 kilometres (326 mi).I think some error with question

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Subject :NSO    Class : Class 6

Ans 1:

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.

Ans 2:

Class : Class 8

Ans 3:

Class : Class 9
the answer is 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
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.

Ans 4:

Class : Class 6
a

Ans 5:

Class : Class 4
aswer a jojojojojojojojojojojooojojjjjjojjojjjojoojjjooooojjjjjjjoooojjojojojojojojoo

Ans 6:

Class : Class 8

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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 6
The correct answer is C

Ans 2:

Class : Class 5
yes.citrus fruit is vitamin c

Ans 3:

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

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