A student reads a barometer in the laboratory and finds the prevailing atmospheric pressure to be 720.0 mmHg. Which of the following is the correct option/s?

0.947 atm

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

95.99 kPa

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

9.599 \times 10^{3}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

720 torr

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D 720 torr
we know, 1 atm = 760 mmHg
So, $720.0 m m H g \frac{1 a t m}{760 m m H g}$ = 0.947 atm
Similarly, 1 atm = 760 mmHg = 101.325kPa
So, $720.0 m m H g \frac{101.325 k P a}{760 m m H g}$ = 95.99 kPa

$720.0 m m H g \frac{760 t o r r}{760 m m H g}$ = 720 torr

Similarly, $720.0 m m H g \frac{101, 325 P a}{760 m m H g}$ = $9.599 \times 10^{4}$ Pa

Suggest Corrections

Similar questions

A student reads a barometer in the laboratory and finds the prevailing atmospheric pressure to be 720.0 mmHg. Which of the following is the correct option/s?

Q. A student wants to find the absolute pressure of water at a point below the surface of water. He has a barometer and a manometer pressure gauge. The barometer reads

1.3152 bar

whereas the manometer pressure gauge reads

0.3152 bar

. What is the absolute pressure? (Assume that pressure at one end of the manometer is atmospheric.)

Barometer which is calibrated directly to read the atmospheric pressure is

A faulty barometer contains certain amount of air and saturated water vapour. It reads 74.0 cm when the atmospheric pressure is 76.0 cm of mercury and reads 72.10 cm when the atmospheric pressure is 74.0 cm of mercury. Saturation vapour pressure at the air temperature = 1.0 cm of mercury. Find the length of the barometer tube above the mercury level in the reservoir.

Q. A mercury barometer is known to be defective. It contains a small quantity of air in the space above the mercury. When an accurate barometer reads 770 mm, the defective one reads 760 mm and when the accurate one reads 750 mm, the defective one reads 742 mm. The true atmospheric pressure when the defective barometer reads 750 mm is

Join BYJU'S Learning Program

A student reads a barometer in the laboratory and finds the prevailing atmospheric pressure to be 720.0 mmHg. Which of the following is the correct option/s?

The correct option is D 720 torrwe know, 1 atm = 760 mmHg So, 720.0 mmHg 1atm760mmHg = 0.947 atm Similarly, 1 atm = 760 mmHg = 101.325kPa So, 720.0 mmHg 101.325kPa760 mmHg = 95.99 kPa 720.0 mmHg760 torr760 mmHg = 720 torr Similarly, 720.0 mmHg101,325 Pa760 mmHg = 9.599×104 Pa