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Nilanjana De from Delhi Public School North, Bengaluru
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:

Praveen kumar from GD DAV Public school Bhandarkola Deoghar, deoghar
Class : Class 8
option B because of expansion the contact point get diverted

Ans 2:

Praveen kumar from GD DAV Public school Bhandarkola Deoghar, deoghar
Class : Class 8
option B because of expansion the contact point get diverted

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RISHIRAJ SONI from DELHI PUBLIC SCHOOL,RAIPUR, Raipur
Subject :NSO    Class : Class 6

Ans 1:

swapnil bhowmik from thakur public school, mumbai
Class : Class 6
not all physical changes are reversible

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Gaurav Mediratta from SRGS, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

Atharva Tambe from Swami Vivekanand International School, Mumbai
Class : Class 4
b

Ans 2:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 4
B

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Gaurav Mediratta from SRGS, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

Rishita Sivakumar from Jss Private School Dubai, Karama Dubai
Class : Class 4
d

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is D.

Ans 3:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 4
D

Ans 4:

Aaryaman Pradhan from De paul School , Berhampur
Class : Class 5
d

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Gaurav Mediratta from SRGS, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

Debarpan Das from Delhi Public School , Durgapur
Class : Class 5
Please tell the answer of this question

Ans 2:

SAMRIDDHI from Chirec International School, Hyderabad
Class : Class 4

Ans 3:

suvanjot from spring dales, amritsar
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:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 4
A IS RIGHT ANSWER

Ans 5:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
Roshni is right

Ans 6:

SAMRIDDHI from Chirec International School, Hyderabad
Class : Class 4
A is write suvanjot check solution

Ans 7:

Roshni from Mount litera Zee School Goa, Goa
Class : Class 4
Could somebody explain the meaning of the question.

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Gaurav Mediratta from SRGS, Bengaluru
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:

SAMRIDDHI from Chirec International School, Hyderabad
Class : Class 4
how????????????

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is C.

Ans 3:

Bushra aslam from uttam, Ghaziabad
Class : Class 4

Ans 4:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 4
C

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Gaurav Mediratta from SRGS, Bengaluru
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is A.

Ans 2:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 4
A

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from Dav public school brs nagaR ludhiana, LUDHIANA
Subject :NSO    Class : Class 4

Ans 1:

Harsh Sobti from the samhita academy, BLR
Class : Class 5
aahana, do you know the ring of fire? if you do , you will know the answer

Ans 2:

yashmit singh from la blossom school, jalandhar
Class : Class 5
Answer is fuck

Ans 3:

Nishchita from Gems Modern Academy , Dubai
Class : Class 5
I think the answer is C

Ans 4:

Aneesh Rajput from LOTUS VALLEY INTERNATIONAL SCHOOL, NOIDA
Class : Class 5

Ans 5:

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

Ans 6:

aarush from A p international school, thane
Class : Class 4

Ans 7:

shreyansh2010 from Prudence, New Delhi
Class : Class 5

Ans 8:

shreyash rawat from podar international school, pune
Class : Class 5

Ans 9:

amogha from Hindustan international school, chennai
Class : Class 5

Ans 10:

yashmit singh from la blossom school, jalandhar
Class : Class 5
What the fuck

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sambodhi roy from CPS, Nagpur, Nagpur
Subject :NSO    Class : Class 5

Ans 1:

Fareeha siddiqua from Janki Devi public school , Mumbai
Class : Class 5

Ans 2:

Mannan from Sherwood High, Bengaluru
Class : Class 6
why

Ans 3:

Fareeha siddiqua from Janki Devi public school , Mumbai
Class : Class 5
option D is correct

Ans 4:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
i dont understand

Ans 5:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI
Class : Class 5
p and q are the same muscles.

Ans 6:

Dvij Agrawal from Lotus Valley International School, Gurgaon
Class : Class 5
if they contract it moves up and if they relax then arm moves down so both are correct right?

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Debeesmita Lenka from DAV PUBLIC SCHOOL CHANDRASEKHARPUR, BHUBANESWAR
Subject :NSO    Class : Class 5

Ans 1:

Tanishka Laha from Euroschool, Bengaluru
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:

Koustavi Chakraborty from DELHI PUBLIC SCHOOL, PUNE
Class : Class 5
answer is c ...64 g ...its the correct one.

Ans 3:

Biju Pappachan from Rkc , Raipur
Class : Class 1
The correct ans is C. U will understand very clearly from the solution

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