NEET Exam > NEET Questions > A flask of mercury is sealed off at 20 °C an...
Start Learning for Free
A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will be
- a)100 MPa
- b)720 MPa
- c)365 MPa
- d)230 MPa
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
A flask of mercury is sealed off at 20 °C and is completely filled wi...
= 1.46 × 10−2
Now the bulk modulus, 
where P is the pressure.
where P is the pressure.P = (25000) x 1.46 x 10-2 MPa = 365 MPa
Free Test
FREE
| Start Free Test |
Community Answer
A flask of mercury is sealed off at 20 °C and is completely filled wi...
To determine the pressure of mercury within the flask at 100 °C, we need to consider the bulk modulus and coefficient of volume expansion of mercury.
1. Bulk modulus of mercury:
The bulk modulus of a material measures its resistance to compression. It represents the ratio of the change in pressure to the fractional change in volume. The bulk modulus of mercury is given as 25000 MPa.
2. Coefficient of volume expansion of mercury:
The coefficient of volume expansion of a material measures the change in volume per unit volume per degree change in temperature. For mercury, the coefficient of volume expansion is given as 1.82 × 10^(-4) °C^(-1).
3. Calculation:
Since the expansion of glass is ignored, we can assume that the volume of the flask remains constant. Therefore, the change in volume of mercury is equal to the change in volume of the flask.
Let's assume the initial volume of mercury in the flask is V, and the final temperature is T2 = 100 °C. The initial temperature is T1 = 20 °C.
The change in temperature is ΔT = T2 - T1 = 100 °C - 20 °C = 80 °C.
Using the coefficient of volume expansion, we can calculate the change in volume of mercury:
ΔV = V * β * ΔT
= V * (1.82 × 10^(-4) °C^(-1)) * 80 °C
Since the volume of mercury is assumed to be constant, the change in volume is equal to zero:
ΔV = 0
Therefore, we can write the equation:
V * (1.82 × 10^(-4) °C^(-1)) * 80 °C = 0
Solving for V, we get:
V = 0
Since the volume of mercury remains constant, the pressure is also constant. Therefore, the pressure of mercury within the flask at 100 °C is equal to the pressure at 20 °C.
Hence, the correct answer is option C) 365 MPa.
1. Bulk modulus of mercury:
The bulk modulus of a material measures its resistance to compression. It represents the ratio of the change in pressure to the fractional change in volume. The bulk modulus of mercury is given as 25000 MPa.
2. Coefficient of volume expansion of mercury:
The coefficient of volume expansion of a material measures the change in volume per unit volume per degree change in temperature. For mercury, the coefficient of volume expansion is given as 1.82 × 10^(-4) °C^(-1).
3. Calculation:
Since the expansion of glass is ignored, we can assume that the volume of the flask remains constant. Therefore, the change in volume of mercury is equal to the change in volume of the flask.
Let's assume the initial volume of mercury in the flask is V, and the final temperature is T2 = 100 °C. The initial temperature is T1 = 20 °C.
The change in temperature is ΔT = T2 - T1 = 100 °C - 20 °C = 80 °C.
Using the coefficient of volume expansion, we can calculate the change in volume of mercury:
ΔV = V * β * ΔT
= V * (1.82 × 10^(-4) °C^(-1)) * 80 °C
Since the volume of mercury is assumed to be constant, the change in volume is equal to zero:
ΔV = 0
Therefore, we can write the equation:
V * (1.82 × 10^(-4) °C^(-1)) * 80 °C = 0
Solving for V, we get:
V = 0
Since the volume of mercury remains constant, the pressure is also constant. Therefore, the pressure of mercury within the flask at 100 °C is equal to the pressure at 20 °C.
Hence, the correct answer is option C) 365 MPa.
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Similar NEET Doubts
Top Courses for NEETView all
A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer?
Question Description
A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer?.
A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer?.
Solutions for A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will bea)100 MPab)720 MPac)365 MPad)230 MPaCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup