National Science Olympiad Forum By SOF Olympiad Trainer - Page 550

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Subject :NSO    Class : Class 3

Ans 1:

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

Ans 2:

Class : Class 7
I think it is C becuse mosquitoes andleeches suck blood but a butterfly such nectar. Or it can be B.

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8
Correct answer is B

Ans 5:

Class : Class 3
The correct ans is D

Ans 6:

Class : Class 9
D

Ans 7:

Class : Class 6

Ans 8:

Class : Class 8
I think ans B as Hyena is a scavenger and others are predators...

Ans 9:

Class : Class 1

Ans 10:

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

Ans 11:

Class : Class 7

Ans 12:

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 13:

Class : Class 4

Ans 14:

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 15:

Class : Class 7

Ans 16:

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

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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 9
It should be wool. D is the correct answer.

Ans 2:

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

Ans 3:

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

Ans 4:

Class : Class 6
wooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooool

Ans 5:

Class : Class 6
woolwooolwoooooooooooooool

Ans 6:

Class : Class 6

Ans 7:

Class : Class 8
Yes the answer should be wool

Ans 8:

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 9:

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

Ans 10:

Class : Class 8
Wool

Ans 11:

Class : Class 9
SOF Master Answer Please explain . The answer should be WOOL

Ans 12:

Class : Class 6
WOOOOOOOOOOOOOOOOOOOL

Ans 13:

Class : Class 7

Ans 14:

Class : Class 9
wooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooollllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll

Ans 15:

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 16:

Class : Class 6
wooooooooooooooooooooooooooooooooooooooooooooooooooooool

Ans 17:

Class : Class 8
Silk smells like charred meat

Ans 18:

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

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
ans 9

Ans 2:

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 3:

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

Ans 4:

Class : Class 7
no 9

Ans 5:

Class : Class 4
PLEASE explain why the answer is 9 and not 11.

Ans 6:

Class : Class 6

Ans 7:

Class : Class 3

Ans 8:

Class : Class 7
11

Ans 9:

Class : Class 9
11 is correct acd acdi acde acdef acdefg acdeg hcdef hcde hcdeg hcd hbg

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
the answer is D

Ans 2:

Class : Class 8

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 4
aswer a jojojojojojojojojojojooojojjjjjojjojjjojoojjjooooojjjjjjjoooojjojojojojojojoo

Ans 4:

Class : Class 6
a

Ans 5:

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 6:

Class : Class 9

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
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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