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ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

The diagram below shows a pump connected to a glass jar. The volume of the glass jar is 400 cm3 and it is filled with air. When the piston is pushed in completely, 50 cm3 of air is forced into the jar.
What is the final volume of air in the jar?


A 50 cm3
B 100 cm3
C 400 cm3
D 450 cm3


Ans 1:

Amey Goyal from Delhi Public School, PANCHKULA
Class : Class 7
hello

Ans 2:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4
Sof pls give us a GOOD explanation. Ans is d.

Ans 3:

Arnav Vashisth from GD GOENKA PUBLIC SCHOOL, Delhi
Class : Class 5
Ok c is answer.

Ans 4:

Hitanshi Behera from Loyola School , Bhubaneswar
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 5:

Prajjwal Dey from MLZS Wakad, PUNE
Class : Class 6

Ans 6:

Tapan from San Academy, Chennai
Class : Class 8

Ans 7:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
ans is D

Ans 8:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
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 9:

Advait kaushik from Ryan international school, Gurugram
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 10:

Gauransh Singla from DPS , Navi Mumbai
Class : Class 5
the correct answer is c because the volume of the jar is 400cm3

Ans 11:

Hari Govind from Delhi Public School Chandigarh , Chandigarh
Class : Class 6
the answer is d

Ans 12:

Tanmay kaushal from ICSE, Mumbai
Class : Class 5
Class : easy

Ans 13:

Dibyajyoti Das from DAV PUBLIC SCHOOL, Bhubaneswar
Class : Class 5
D

Ans 14:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
D

Ans 15:

Shaina Mukherjee from DPS Sharjah, Dubai
Class : Class 5
D

Ans 16:

Mannat Verma from Vivek High School , Chandigarh
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 17:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 8
you all are coreect

Ans 18:

Advaitt S Koduri from Presidium Noida 31, NOIDA
Class : Class 6

Ans 19:

XXX from SVM, Bangalore
Class : Class 5
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

Ans 20:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 7
d

Ans 21:

Dhruv from Springdales, Dubai
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 22:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Ans 16 is wrong

Ans 23:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
air can be compressed .

Ans 24:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
air can be compressed and it would be 450 cm3 answer is d

Ans 25:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

Ans 26:

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

Ans 27:

Hitarthi Shah from Ahmedabad International School, Ahmedabad
Class : Class 7

Ans 28:

Mystic Girl from NPS, Bnagalore
Class : Class 6
C

Ans 29:

Satvik Agrawal from Delhi Public School, bhopal
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 30:

Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru
Class : Class 8
Ans is c

Ans 31:

Tanishka Laha from Euroschool, Bengaluru
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 32:

Nilarka Pahari from Young Horizons School, Kolkata
Class : Class 4
d won't be the correct answer. the answer is c as air can be compressed.

Ans 33:

Keshav Taneja from Wisdom world school, Kurukshetra
Class : Class 5
I thought it would be C but after profound thinking I realised that the answer would be D

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