National Science Olympiad Forum By SOF Olympiad Trainer - Page 84

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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 4

Mr Wadhera thought that his garden dried out most quickly when it was hot and windy. He decided to investigate. He watered his dry garden on four different mornings for 10 min at 8 am using the same amount of water.
What should be the weather conditions for four subsequent days to get a fair test?


A (i), (ii), (v) and (vi) only
B (i), (ii), (iii) and (iv) only
C (iii), (iv), (v) and (vi) only
D (i), (iii), (v) and (vi) only


explain

Ans 1:

Class : Class 6
C

Ans 2:

Class : Class 1
Please explain. .....

Ans 3:

Class : Class 6
I don't understand the guestion. Can somebody explain.

Ans 4:

Class : Class 9

Ans 5:

Class : Class 4

Ans 6:

Class : Class 4

Ans 7:

Class : Class 2
dude i asked you to explain .Not give the answers because you have done it before.[i am talking to you only, Shaurya uniyal]

Ans 8:

Class : Class 4

Ans 9:

Class : Class 4

Ans 10:

Class : Class 6
So, for an experiment you need multiple values for comparison. This question states that the experiment is to be carried out for four days, meaning that you need to compare four different scenarios. The first one is obviously hot and windy. The four scenarios- hot, windy, calm and cloudy must be paired with each other forming these- hot and windy, hot and calm, windy and cloudy, cloudy and calm- option B

Ans 11:

Class : Class 6
What on earth does guestion mean you idiot and infant

Ans 12:

Class : Class 5
Thank you, Shailaja Divakar

Ans 13:

Class : Class 3
I think it is B?.?.

Ans 14:

Class : Class 4
Can somebody explain the answer to the question?

Ans 15:

Class : Class 3
I agree with Harish Divakar and Ridhima . The ans is b

Ans 16:

Class : Class 5
Please somebody explain.

Ans 17:

Class : Class 4
they have not given the solution........ please explain

Ans 18:

Class : Class 8
please somebody explain......They have not given the solution.............

Ans 19:

Class : Class 6
The meaning of the symbols is not clear.

Ans 20:

Class : Class 4

Ans 21:

Class : Class 8

Ans 22:

Class : Class 8

Ans 23:

Class : Class 5

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6
Hey ! I wrote B only ! They changed my answer !

Ans 2: (Master Answer)

Class : Class 1

The correct answer is B.


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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 5

Ans 3:

Class : Class 8
A

Ans 4:

Class : Class 6
A

Ans 5:

Class : Class 8
A

Ans 6:

Class : Class 5

Ans 7:

Class : Class 8
A

Ans 8:

Class : Class 7
A

Ans 9:

Class : Class 7
the answer is A

Ans 10:

Class : Class 6
A

Ans 11:

Class : Class 5
A

Ans 12:

Class : Class 8
A

Ans 13:

Class : Class 7
The answer is A because scientists have declared that Pluto was a dwarf planet in 24 August 2006

Ans 14:

Class : Class 5
A

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

Match the column I with column II and select the correct option.

Column I Column II
(Causes of soil erosion) (Methods of soil conservation)
a. Running water carries
the topsoil with it
1. Embankments
b. Strong winds blow away
humus-rich topsoil
2. Wind breaks
c. Indiscriminate cutting of trees 3. Afforestation
4. Terrace farming


A a-1, 3; b-2; c-4
B a-2, 4; b-1; c-3
C a-2; b-1, 3; c-4
D a-1, 4; b-2; c-3


Give solution

Ans 1:

Class : Class 9
Plz explain

Ans 2:

Class : Class 10

Ans 3:

Class : Class 7
Can you tell the answer of this question

Ans 4:

Class : Class 4
how terrrace farming will stop soil errossion

Ans 5:

Class : Class 5
Dear Admin from revise , kindly share solution / reasoning to this answer.

Ans 6:

Class : Class 7

Ans 7: (Master Answer)

Class : Class 1
The correct answer is D.

Ans 8:

Class : Class 4
pl explain how the ans is D

Ans 9:

Class : Class 3
THE CORRECT ANSWER IS D

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
do the activity for more solution

Ans 2:

Class : Class 10
Very nice

Ans 3:

Class : Class 4
solution is not given

Ans 4:

Class : Class 3
Oh I didn’t realise

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 9
lipi from shalom hills international school , gurugramclass:ANSWER SHOULD BE C AS FROG LIFE CLYCLE HAS 4 STAGES-EGGS , TADPOLE , TADPOLE WITH LEGS , ADULT

Ans 2:

Class : Class 4
ANSWER SHOULD BE C

Ans 3:

Class : Class 7
confusing

Ans 4:

Class : Class 6
man that is not fair

Ans 5:

Class : Class 7
In X both frog and butterfly is there.Frog: Spawn , Tadpole ,Tadpole with legs and adult frogButterfly : Eggs ,Larvae, Pupae ,Butterfly So There is CONFUSION And answer is C asCockroach :Egg ,Nymph ,Cockroach SOF erase this confusion somehow Ashmi Narkar

Ans 6:

Class : Class 5
divesh please eक्ष्plain me

Ans 7:

Class : Class 8
Frog has 4 stages of life cycle Egg- Early Tadpole - Young Adult ( Tadpole with legs ) - Adult Frog and Cockroach has three stages of life cycle Egg - Nymph - Adult Cockroach . Hence, option - C is correct.

Ans 8:

Class : Class 5
The answer is C as Frog has 4 stages in its lifecycle - Egg, Tadpole, Tadpole with Legs and Adult.

Ans 9:

Class : Class 8
the correct answer is C.

Ans 10:

Class : Class 7
The arrows are wrong

Ans 11:

Class : Class 6
It should be C as a frog has four stages that is an egg, a tadpole, a tadpole with legs and a frog; while a cockroach has three stages that is egg, nymph and cockroach.

Ans 12:

Class : Class 5
If this kind of mistakes you guys are doing in the course materials and practice tests then it is not good. I will not rely on your training materials. I emailed you guys the mistakes done in Prep Guide also. I am disappointing with the material.

Ans 13:

Class : Class 5
It should be c because frog has 2 stages between egg and adult while cockroach has 1 stage between the egg and adult

Ans 14:

Class : Class 4
The ans cannot be D frog has 4 stages ie Egg , Tadpole, (tadpole with legs ) Young adult, Adult

Ans 15:

Class : Class 4
it should be C not D

Ans 16:

Class : Class 5
the answer should be C as a frog has 4 stages in its life cycle,spawns,tadpole,tadpole with legs and a adult frog

Ans 17:

Class : Class 4
C is the correct anwer

Ans 18:

Class : Class 8
Frog has 4 stages including egg

Ans 19: (Master Answer)

Class : Class 1

Ans 20:

Class : Class 8
No, answer is D

Ans 21:

Class : Class 4

Ans 22:

Class : Class 5
ANSWER SHOLD BE C

Ans 23:

Class : Class 7
It should be c

Ans 24:

Class : Class 4
what the *****

Ans 25:

Class : Class 7
Divesh answer ISN'T D

Ans 26:

Class : Class 1
Everyone is right the answer should be C

Ans 27:

Class : Class 7
I agree with all those who gave CI am as sympathetic as I can be and as for all those who said D I am very very angryAnd as for all those who said DThey are completely WRONG and SILLYSOF and Dinesh Kr.Pandey seeThe effect of your wrong answer DIs now creating a confusionAnd please give us all the correct explanation

Ans 28:

Class : Class 3
FROG HAS FOUR STAGES IN LIFE: EGGS,EARLY TADPOLE, LATE TADPOLE,ADULT

Ans 29:

Class : Class 8
THE ANSWER SHOULD BE C NOT D BECAUSE FROG HAS 2 STAGES ,AND COCKROACH HAS 1 STAGE IN BETWEEN EGGS AND ADULTS.

Ans 30:

Class : Class 6
Well, the correct answer is showing D. I mean is D is the correct answer? No, it is not. If u see here the answer will be C. How? This is the life cycle of a frog - First it other frogs lay eggs. Then it grows to a tadpole. Then to a froglet. And then lastly it grows into an adult frog. So, it has 4 stages. And then for cockroach, it has 3 stages which are - Eggs into a Nymph and then into an adult cockroach. So, that is why the correct answer will be C and not D.

Ans 31:

Class : Class 5
Answer C is right.Frog has 4 stages - Egg, tadpole, froglet and adult frogCockroach has 3 stages - Egg, nymph and adultAs per your answer, frog option is wrong for 3 stages

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
Bhavya, If Phiran the traditional dress of Korea,then who wears white coats-gardeners and plumbers or doctors and nurses !!!!!! Correct answer is D. Don`t make fun of yourself . Everyone in my family is laughing at you.

Ans 2:

Class : Class 8
D

Ans 3:

Class : Class 8
D

Ans 4:

Class : Class 2
Right it will be D

Ans 5:

Class : Class 4
The national dress of Korea is "Phiran'

Ans 6:

Class : Class 4

Ans 7:

Class : Class 4
harry have you killed voldemort

Ans 8:

Class : Class 2
It will be d as hanbok and Phiran

Ans 9:

Class : Class 4
no solution

Ans 10:

Class : Class 5
national dress of korea is hanbok

Ans 11:

Class : Class 4
ans c

Ans 12:

Class : Class 4

Ans 13:

Class : Class 6
don't people in Jammu Kashmir wear phiran

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