Download App

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

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsHeating and Chemical Effect of Current1 Mark
MCQ
The negative Zn pole of a Daniel cell, sending a constant current through a circuit, decreases in mass by 0.13g in 30 minutes. If the electrochemical equivalent of Zn and Cu are 32.5 and 31.5 respectively, the increase in the mass of the positive Cu pole in this time is
  • A
    0.242 g
  • B
    0.190 g
  • C
    0.141 g
  • ✓
    0.126 g
✓

Answer

Correct option: D.
0.126 g
 0.126 g

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 (1 Marks)" from Heating and Chemical Effect of Current→Heating and Chemical Effect of Current — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

A plane electromagnetic wave having a frequency $n = 23.9\, GHz$ propagates along the positive $z-$ direction in free space. The peak value of the electric field is $60\, V/m$. Which among the following is the acceptable magnetic field component in the electromagnetic wave?
→
Two charges of $10C$ and $-15C$ are separated in air by 1m.The ratio of force exerted by one on the other is:
→
How much kinetic energy will be gained by an α - particle in going from a point at 70 V to another point at 50 V
→
If a small amount of antimony is added to germanium crystal 
→
The truth table shown in figure is for

$A\,\, 0\,\, 0\,\, 1\,\, 1$

$B\,\, 0\,\, 1\,\, 0\,\, 1$

$Y \,\,1\,\, 0\,\, 0\,\, 1$

→
In a series $LCR$ current the voltage across resistance, capacitance and inductance is $10\, V$ each. If the inductor is short circuited, the voltage across the capacitor will be:-
→
In a circuit for finding the resistance of a galvanometer by half deflection method, a  $6\,V$  battery and a high resistance of  $11\,k\Omega $  are used. The figure of merit of the galvanometer $60\,\mu A/$  division. In the absence of shunt resistance, the galvanometer produces a deflection of  $\theta = 9$  divisions when current flows in the circuit. The value of the shunt resistance that can cause the deflection of $\theta /2 ,$  is closest to ..................  $\Omega$
→
Choose the $CORRECT$ option for electric field components of unpolarized light passing through polarizing sheet
→
In an electromagnetic wave, the electric and magnetising fields are $100\,V\,{m^{ - 1}}$ and $0.265\,A\,{m^{ - 1}}$. The maximum energy flow is.......$W/{m^2}$
→
The figure shows a tetrahedron, each side of which has a resistance $r$ Choose the correct diagram $(s),$ which show two-dimensional equivalent of the tetrahedron.
→