Chemical Effect of Electric Current

The equivalent weight of ${\mathrm{HNO}}_3$ in the following reaction is

${\mathrm{I}}_2+10{\mathrm{HNO}}_3\to 2{\mathrm{HIO}}_3+10{\mathrm{NO}}_2+4{\mathrm{H}}_2\mathrm{O}$

A moving coil instrument having a resistance of $10\mathrm{\Omega }$ gives a full-scale deflection when the current is $10\mathrm{mA}$. What should be the value of the series resistance, so that it can be used as a voltmeter for measuring potential difference up to $100\mathrm{V}$?

In order to increase the range of a voltmeter.

Sensitivity of electronic voltmeter is high.

High range can be ontained in a basic D.C. electronic voltmeter by________________________?

Input impedence of an electronic voltmeter is-

No. of electrons in one coulomb charge is________.

Which among the following connot be the charge of a charged body?

Two equally charged spheres attract each other. Now if they touch each other then they will-

Why is gold used in the Gold-leaf electroscope?

A material in which electrons are tightly bound and cannot move freely at room temperature is called______.

Which of the following statements is correct regarding the conductivity of the solutions of electrolytes.

Which of the following statements is correct with respect to electrolytic solutions-

The conduction of electricity through the electrolyte solution is due to________________?

Electrolytic conduction differs from metallic conduction in that in the case of electrolytic conduction-

Which of the following will conduct electricity?

Lemon juice is a/an _____(conductor/insulator) of electric current.

The equivalent weight of an element is $4$. Its chloride has a vapour density $59.25$. Then the valency of the element is

Equivalent weight of an element is _____ proportional to its valency.