National Science Olympiad Forum By SOF Olympiad Trainer

User Forum

Subject :NSO    Class : Class 7

An electric kiln has a device in it to prevent the kiln from getting too hot. The metals in the bimetallic strips expand at different rates and bend when heated. The contact points move apart and electric current stops flowing.

This device works when, _______.

AQ expands more than R, and P expands more than S
BR expands more than S, and Q expands more than P
CP expands more than Q, and R expands more than S
DP expands more than R, and S expands more than Q


Can someone explain this question with diagram?

Ans 1:

Class : Class 8
option B because of expansion the contact point get diverted

Ans 2:

Class : Class 8
option B because of expansion the contact point get diverted

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
not all physical changes are reversible

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
b

Ans 2:

Class : Class 4
B

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
d

Ans 2: (Master Answer)

Class : Class 1
The correct answer is D.

Ans 3:

Class : Class 4
D

Ans 4:

Class : Class 5
d

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
Please tell the answer of this question

Ans 2:

Class : Class 4

Ans 3:

Class : Class 4
B SHOULD BE THE RIGHT ANSWER BECAUSE WE ARE PLOTTING NO. OF DEATHS AND NOT NO. OF ORGANISMS...SO AS THE AMOUNT OF REFUSE INCREASES THE NO. OF DEATHS WILL INCREASE TILL ALL THE ORGANISMS DIE AND THUS THE DEATHS DECEASE

Ans 4:

Class : Class 4
A IS RIGHT ANSWER

Ans 5:

Class : Class 5
Roshni is right

Ans 6:

Class : Class 4
A is write suvanjot check solution

Ans 7:

Class : Class 4
Could somebody explain the meaning of the question.

Post Your Answer

Subject :NSO    Class : Class 4

Harshit wanted to find out among the four locations - playground, science laboratory, school garden and the bus stop outside his school - which is the most polluted. He placed four glass tiles smeared with petroleum jelly at the four locations for the same period of time for one day and recorded his observation. However, his teacher told him that his experiment was not reliable because he did not ________.

AWet the glass tiles
BUse tiles made of different materials
CRepeat the experiment over a few days
DExamine the tiles with hand lens


c

Ans 1:

Class : Class 4
how????????????

Ans 2: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 3:

Class : Class 4

Ans 4:

Class : Class 4
C

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 2:

Class : Class 4
A

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
aahana, do you know the ring of fire? if you do , you will know the answer

Ans 2:

Class : Class 5
Answer is fuck

Ans 3:

Class : Class 5
I think the answer is C

Ans 4:

Class : Class 5

Ans 5:

Class : Class 5
I didn't understand this . What does it mean ???

Ans 6:

Class : Class 4

Ans 7:

Class : Class 5

Ans 8:

Class : Class 5

Ans 9:

Class : Class 5

Ans 10:

Class : Class 5
What the fuck

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 6
why

Ans 3:

Class : Class 5
option D is correct

Ans 4:

Class : Class 5
i dont understand

Ans 5:

Class : Class 5
p and q are the same muscles.

Ans 6:

Class : Class 5
if they contract it moves up and if they relax then arm moves down so both are correct right?

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
35 and 48 g are lighter than 52 and 75 g, and 80 g is heavier than 52 and 75 g. Therefore, the answer is C, 64 g.

Ans 2:

Class : Class 5
answer is c ...64 g ...its the correct one.

Ans 3:

Class : Class 1
The correct ans is C. U will understand very clearly from the solution

Post Your Answer