MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Empirical & Molecular Formula

The thermo em...

Question

The thermo emf of Sb against lead is +4.3 mV and that of Bi against lead is -6.9 mV when the cold junction is at $0^{0} C$ and hot junction is at $100^{0} C$ . The emf of Sb- Bi thermocouple for the same temperatures is

A

-2.6mV

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

B

11.2mV

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

C

+2.6mV

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

D

25.67mV

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

Open in App

Solution

The correct option is B 11.2mV
The emf of Sb-Bi thermocouple is given as $E = 4.3 - (- 6.9) = 11.2 m V$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Keeping the cold junction at

0^{0} C

when hot junction is at

50^{0} C

the thermo emf is 2 mV and when hot junction is at

100^{0} C

thermo emf is 3.5 mV. Neutral temperature of that thermocouple (thermo emf varies as

e = a t + b t^{2}

)

Q. When cold junction is at

0^{0} C

and hot junction is at

100^{0} C

, thermo emfs developed by Fe - Pb and Pb - Bi thermocouples are 650

μ

μ

V respectively. Thermo emf developed for Fe - Bi thermocouple per

1^{0} C

temperature difference is

Q. When the cold junction is at

0^{0} C

and the hot junction is below the temperature of inversion, emfs developed by Sb - Pb and Pb - Bi thermocouples are 31

μ

μ

V per degree centigrade respectively. Thermo emf developed by Bi-Sb thermocouple per

^{0} C

Q. Antimony - Bismuth thermocouple generates a thermo emf of

100 μ V /^{0} C

When the cold junction is at

0^{0} C

. A micro ammeter of resistance 100

Ω

is connected in the circuit of Sb - Bi thermocouple. If the least count of the micro ammeter is

1 μ A

. The minimum temperature difference it can measure is (Neglect the resistance of Sb - Bi thermocouple.)

Q. The respective temperatures of cold and hot junctions of a Sb- Bi and a Fe-Cu thermocouple are same. If

E_{1}

E_{2}

are the respective thermo emf developed in the two cases, then

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Percentage Composition and Molecular Formula

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Empirical & Molecular Formula

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon