National Science Olympiad Forum By SOF Olympiad Trainer - Page 701

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
how

Ans 2:

Class : Class 5

Ans 3:

Class : Class 4
How is the answer coming

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 7
The correct answer will be C

Ans 2:

Class : Class 6
no, its b

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
EASY MAN ANSWER IS B BECAUSE SHE'S FACING SOUTH AND TO GO EAST YOU TAKE LEFT (IF YOU ARE FACING SOUTH)

Ans 2:

Class : Class 8
confusing question

Ans 3:

Class : Class 10
if we are facing towards north and we have to go to east we must turn towards right and then go to straight.It means that answer they have given us in wrong.

Ans 4:

Class : Class 6
Yes the answer is supposed to be a

Ans 5:

Class : Class 9
it's b as when she will turn around she will be facing north and her right is east and when she'll turn the east side is on her left

Ans 6:

Class : Class 10
Yes I think it is a as well

Ans 7:

Class : Class 6
I think the answer provided is right, since the compass(Red Pointer) is pointing towards her i.e, in the north direction, so she is facing south. Hence for her east will be towards left and then go straight.

Ans 8:

Class : Class 6
B is the correct answer.

Ans 9:

Class : Class 9

Ans 10:

Class : Class 6
@Arunav, please don't say these bad comments... It hurts people who have given the wrong answer.

Ans 11:

Class : Class 4
Answer

Ans 12:

Class : Class 4
S0

Ans 13:

Class : Class 6
you are wrong ans is bbbbbbbbbbbbbbbbbbbbbbb

Ans 14:

Class : Class 9
Confusing question, confusing answers discussed. HEY MASTER ANSWER PLZ HELP US OUT!

Ans 15:

Class : Class 4
Yes the red pointer shows north so she has to go towards east and east is towards right of north answer is wrong the answer should be A

Ans 16:

Class : Class 4
B

Ans 17:

Class : Class 9

Ans 18:

Class : Class 7
The red portion on the compass always signifies the north direction. So the answer given is wrong.

Ans 19:

Class : Class 4

Ans 20:

Class : Class 10
kpks, apply mind . it is said that red portion(NORTH) points towards her, which means that she is seeing SOUTH with her eyes. Now , to go eat, if she was seeing north only , she would have to turned right. But as she in facing south, she will have to turn opposite of right i.e - leftso those who are saying ans is a , are mad!!!!!!!

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
as the magnetic field near the ends/poles is strong ,the number of iron nails attracted will be more near the poles and less near the centre

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8
a is correct one

Ans 4:

Class : Class 9
a is correct answer

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
Please explain

Ans 2:

Class : Class 8
The letters are rearranged in descending order PENCIL -> PNLIEC ANGLE -> NLGEA

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Subject :NSO    Class : Class 1

Ans 1:

Class : Class 5
a

Ans 2:

Class : Class 2
ans is 8

Ans 3:

Class : Class 1

Ans 4:

Class : Class 5
8

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
Answer D : All of these

Ans 2:

Class : Class 5
ans 6 is use less

Ans 3:

Class : Class 9
melting of ice

Ans 4:

Class : Class 7
Only melting of ice cube can be again turned to it's original form

Ans 5:

Class : Class 8

Ans 6:

Class : Class 9

Ans 7:

Class : Class 4
MELTING OF ICE IS THE ONLY PHYSICAL CHANGE IN THE GIVEN OPTIONS. OTERS ARE CHEMICAL CHANGE.

Ans 8:

Class : Class 9
All of you are correct in one sense but in other sense if we look i think all of these is the answer

Ans 9:

Class : Class 8
they are mads

Ans 10:

Class : Class 9
melting of ice

Ans 11:

Class : Class 10
Melting of ice

Ans 12:

Class : Class 6
Melting of ice

Ans 13:

Class : Class 9
melting of ice is a physical change but why not others? they are to!

Ans 14:

Class : Class 7

Ans 15:

Class : Class 5
Class :Easy

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
you all are coreect

Ans 2:

Class : Class 5
Ok c is answer.

Ans 3:

Class : Class 8
Ans is c

Ans 4:

Class : Class 6

Ans 5:

Class : Class 6

Ans 6:

Class : Class 7

Ans 7:

Class : Class 5
I thought it would be C but after profound thinking I realised that the answer would be D

Ans 8:

Class : Class 7
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

Ans 9:

Class : Class 6
C

Ans 10:

Class : Class 8

Ans 11:

Class : Class 6
As air can be compressed and takes up the volume of container, its final volume in the jar will be 400 cm3.

Ans 12:

Class : Class 5
air can be compressed and it would be 450 cm3 answer is d

Ans 13:

Class : Class 4
d won't be the correct answer. the answer is c as air can be compressed.

Ans 14:

Class : Class 7
D

Ans 15:

Class : Class 5
D

Ans 16:

Class : Class 4
Sof pls give us a GOOD explanation. Ans is d.

Ans 17:

Class : Class 1
Ans 16 is wrong

Ans 18:

Class : Class 10
air can be compressed .

Ans 19:

Class : Class 5
D

Ans 20:

Class : Class 9
It will be D as it says that the jar contains 400 cm3 air and if a 50 cm3 syring filled with air is put into the jar it will become 450 cm3 400 50 = 450 cm3.

Ans 21:

Class : Class 5
Class : easy

Ans 22:

Class : Class 8
It was forced out of the tank so it went out and the thing is 50cm³ so 400-50 50=400So the answer is 400cm³

Ans 23:

Class : Class 5
plz dont be angry. The volume of the glass jar will not change. it will remain the same as it is not flexible. so if we compress air of 50cm3 the volume will decrease. But air occupies the available space. So, the correct answer is C.

Ans 24:

Class : Class 9
yes all please understand sorry if i am wrong it compress the air dear children it wont increase t decreases

Ans 25:

Class : Class 4
ans is D

Ans 26:

Class : Class 4
the question says what is the total volume of AIR in the jar, so as air can be compressed then it should obviously contain 450cm3 and I never heard of glass being flexible in other words the 50cm3 of air in the jar is not going to disappear or fly away so ans is D

Ans 27:

Class : Class 5
the correct answer is c because the volume of the jar is 400cm3

Ans 28:

Class : Class 5
The volume of the JAR is 400 cm3 . If we insert air in the jar, the VOLUME OF THE JAR will remain the same as it is mentioned that the JAR IS COMPLETELY MADE OF GLASS, which is not flexible. Therefore, the answer is C .......

Ans 29:

Class : Class 9
Correct answer is C because air can be compressed. You don't need to add 400 and 50 because air can be compressed

Ans 30:

Class : Class 5
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

Ans 31:

Class : Class 6
the answer is d

Ans 32:

Class : Class 7
d

Ans 33:

Class : Class 7
hello

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
ANSWER is c as many people don't see that the container already had 30 ml of water

Ans 2:

Class : Class 9
yes dear B and C are correct SOF is wrong my dear kids please dont fight

Ans 3:

Class : Class 6
When Y is put it looks like it rose from 50 to 70.

Ans 4:

Class : Class 7
B is the correct answer.

Ans 5:

Class : Class 4
x=20 and y= 25 read the last line of the question and you will find out

Ans 6:

Class : Class 7
B

Ans 7:

Class : Class 6
When you put R on the surface you will find that it does not weigh more than 30 units.

Ans 8:

Class : Class 8
option c is wrong only y has 25ml volume and x has 50ml , z also has 50 ml of volume so , option b is correct

Ans 9: (Master Answer)

Class : Class 1

Ans 10:

Class : Class 10
Yajat is correct because if you read the question carefully , it is written '30 ml of watter' which means that it was already filled with 30 ml of water. now x=50-30=20cm3 and y =75 - 50 = 25 mlSo correct option is c.

Ans 11:

Class : Class 8
B is 25ml which is less than 30 ml ... B is the answer

Ans 12:

Class : Class 5
Both B and C are right so please don’t quarrel

Ans 13:

Class : Class 4
I q

Ans 14:

Class : Class 10
DEFINITELY IT IS B

Ans 15:

Class : Class 7
x is put in a vase of 30 ml water . then it becomes 50 ml . so , volume of x is 50 - 30 i.e. 20 ml . then after adding y , it becomes 75 ml . then , y is 75 - 50 i.e. 25 ml . both are less than 30 ml . so , the correct answer is C . understood ?

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
I like this question

Ans 2:

Class : Class 5
Well, The question is tricky and it needs critical thinking. I thought B but it was D........surprising!

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