Download App

Heating and Chemical Effect of Current — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsHeating and Chemical Effect of Current1 Mark
Question

For a given temperature difference, which of the following pairs will generate maximum thermo e.m.f.

(a) Antimony-bismuth

(b) Silver-gold

(c) Iron-copper

(d) Lead-nickel
✓

Answer

(a) Antimony-bismuth

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q [1M]" from Heating and Chemical Effect of Current→Heating and Chemical Effect of Current — all question types→Physics STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

The capacity of a parallel plate air condenser is 2 μF. If a dielectric of dielectric constant 4 is introduced between the plates, its new capacity is:
→

Select the correct statement

(a) In a full wave rectifier, two diodes work alternately

(b) In a full wave rectifier, two diodes work simultaneously

(c) The efficiency of full wave and half wave rectifiers is same

(d) The full wave rectifier is bi-directional.
→
Which of the following is an example of a direct band gap intrinsic semiconductor?
→
Nature of electron beam travelling in same direction with same velocity is:
→
An electric dipole is kept in a non-uniform electric field. It experiences.
→
The color coding of  earth, live and neutral wire respectively is:
→
If $\delta$ is the angle of dip at a place, then expression for $\tan \delta$ is :
→

Assertion :   The properties of paramagnetic and ferromagnetic substance are not effected by heating.

Reason     : As temperature rises, the alignment of molecular magnets gradually decreases.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If assertion is false but reason is true.
→

To an observer on the earth the stars appear to twinkle. This can be ascribed to

(a) The fact that stars do not emit light continuously

(b) Frequent absorption of star light by their own atmosphere

(c) Frequent absorption of star light by the earth's atmosphere

(d) The refractive index fluctuations in the earth's atmosphere
→

In any Bohr orbit of the hydrogen atom, the ratio of kinetic energy to potential energy of the electron is

(a) 1/2

(b) 2

(c) -1/2   

(d)  -2
→