Metallic and electrolytic conduction - class-XII
Description: metallic and electrolytic conduction | |
Number of Questions: 85 | |
Created by: Trisha Prashad | |
Tags: electrochemistry chemistry chemical reactions |
Which of the following is an insulator?
Insulators:
What is [CN-] in a solution prepared by mixing 100ml 0.1M $KCN$ and 100ml 0.1M $HCl$. (Ka of $HCN$ is 510^-6 M)?
A compass placed in an electric field will be deflected due to:
Which of the following is a good conductor of electricity?
Which of the following does not conduct electricity ?
A Coordinates complex has the formula $PtCl.2KCl$. Electrical conductance measurements indicate the pressure of three ion in one formulaa unit. Treatment with $AgNO _{3}$ produces no precipiate of $AgCl$. What is the coordinates no of $Pt$ this complex?
An acidic solution of Cu+ salt containing 0.4 g of Cu+ is electrolysed until all the Cu is deposited. The electrolysis is continued for 7 more minutes with volume of the solution kept at 100 ml and the current at 1.2 amp. Calculate volume of the gases evolved at NTP during entire electrolysis( atomic weight of Cu= 63.6)
An electrolytic cell was set up. Distilled water is placed in the cell and battery is switched on. The bulb is also connected through a battery. The bulb will:
Which of the following is a good conductor of electricity?
Which technique should be used to determine if a solution contains a molecular or ionic solute?
The first step in the extraction of Cu from copper pyrites is?
Conductivity ($\kappa $) of $0.01M$ $NaCl$ solution is $0.000145S$ ${cm}^{-1}$. What happens to the conductivity if extra $100mL$ of ${H} _{2}O$ be added to the above solution?
Which of the following is/are always true electroplating ?
Arrange the following complexes in order of increasing electrical conductivity.
(I) $[CoCl _3(NH _3) _3]$ (II) $[CoCl(NH _3) _5]CI _2$
(III) $[Co(NH _3) _6]Cl _3$ (IV) $[CoCl _2(NH _3) _]1Cl$
The electric conduction of a salt solution in water depends on the:
Kim Istry was tired and thirsty after her soccer game, so she drank a sports drink that contained electrolytes. Kim is smart girl who known that when electrolytes dissolve in water, they produce solutions that can conduct an electric current. She also knows that the type of bonding in a substance can determined whether or not it is an electrolyte.
Which of the following substances is classified as an electrolyte?
Conductivity of aqueous solution of an electrolyte depends on:
Electrical conductivity of $Se$ is negligible in dark but increases to exposure to light. Because of this property it is used in:
Pure water is a good conductor of electricity.
Molten sodium chloride conducts electricity due to presence of:
Metallic conduction depends upon which of the following?
How much time is required for the complete decomposition of 2 moles of water using a current of 2 ampere?
A dilute solution of $H _2SO _4$ was electrolyzed by passing a current of 2 amp. The time required for formation of 0.5 mole of oxygen is:
A current being passed for two hour through a solution of an acid liberating 11.2 litre of oxygen at NTP at anode. What will be the amount of copper deposited at the cathode by the same current when passed through a solution of copper sulphate for the same time?
A current of 9.65 Ampere flowing for 10 minutes deposits 3 g of metal which is monovalent, the atomic mass of metal is a:
Which of the following ($1\ M$) conducts more electricity?
In metallic conductor the current is conducted by flow of:
The charge required to deposit 40.5 g of Al(atomic mass=27.0 g) from the fused ${ Al } _{ 2 }{ \left( { SO } _{ 4 } \right) } _{ 3 }$ is :
Electrolytic conductivity of $0.3 M$ solution of $KCI$ at $298 K $is $3.72$ x ${10}^{-2}Scm^{-1}$.Calculate its molar conductivity ($S cm^{2} mol ^{-1}$)
Resistance of decimolar solution is 50 ohm. If electrodes of surface area 0.0004 $m^2$ each are placed at a distance of 0.02 m then conductivity of solution is :
Which statement is not correct ?
Pure water consists almost entirely of:
Molten potassium chloride conducts electricity due to the presence of _______ .
Which of the following solid is an electronic conductor?
We can expect that pure water:
Which modifications are necessary to determine the resistance of solution by the usual method of measurements on Wheatstone's bridge principle?
Which one of the following solution will conduct electricity?
A solution of sodium in liquid ammonia at $-33^oC$ conducts electricity. On cooling, the conductivity of this solution _______.
An aluminium wire is:
Examine the following statement sand select the correct option.
A : Electrolytic conduction is a physical change.
B : In Electrolytic conduction, positive as well as negative ions conduct electricity.
Which of the following will conduct electricity?
An electrolytic cell was set up. Dilute $HCl$ is placed in the cell and battery is switched on. The bulb is also connected through a battery. The bulb will:
Which of the following is a poor conductor of electricity?
In which of the following cases, conductivity decreases with an increase in temperature?
Which does not show electrical conductance?
Which of the following will conduct electricity?
Which of the following solutions contains the greatest number of ions assuming that each solute is fully ionized?
An electrolytic cell was set up. Water is placed in the cell and battery is switched on. The bulb is also connected through a battery. The bulb will:
An electrolytic cell was set up. Ammonium hydroxide is placed in the cell and battery is switched on. The bulb is also connected through a battery. The bulb will:
The electrical conductivity of a solution depends upon :
Which of the following is not a property of metallic conduction?
Conduction of electricity takes place due to the presence of :
Which of the following sentences is/are true?
Assertion: A 0.2M solution of carbonic acid is a weaker conductor of electricity than a 0.2M solution of $HBr$.
Which of the following sentences about conduction is/are true?
Which of the following statements is true about electrolytic conduction?
Which of the following would produce a highly conductive aqueous solution?
Metals are good conductors of electricity because of which of the following reasons?
In a conduction process,change of mass was observed. The conduction type can be:
Which of the following sentences about conduction is/are true?
Which among the following solutions is NOT used in determination of the cell constant?
Metallic conduction involves:
In Death valley,California,a conduction process was going on in an air conditioned room maintained at $30^0$.Suddenly there was a power cut and temperature started to rise and it was found that the conduction process got slower.The conduction type can be:
Ionic conductance of ${ H }^{ + }$ and ${ SO } _{ 4 }^{ 2- }$ are $x$ and $yS\ { cm }^{ 2 }\ { mol }^{ -1 }$. Hence, equivalent conductivity of ${ H } _{ 2 }{ SO } _{ 4 }$ is:
In passing $3\ F$ of electricity through three electrolytic cells connected in series containing $Ag^{\oplus}, Ca^{2+}$, and $Al^{3+}$ ions, respectively. The molar ratio in which the three metal ions are liberated at the electrodes is:
Which of the following statement is incorrect with respect to metallic or electronic conductivity ?
At infinite dilution equivalent conductances of $B{ a }^{ +2 }$ & $C{ 1 }^{ - }$ ions are $127$ & $76\ oh{ m }^{ -1 }c{ m }^{ -1 }\ e{ q }^{ -1 }$ respectively. Equivalent conductance of $BaCl _{ 2 }$ at infinite dilution is:
When sodium lauryl sulphate is dissolved in water in an appreciable amount, micelle formation takes place. Which of the following options is correct regarding the formation process?
The charge required for reducing $1$ mole of $MnO^- _4$ to $Mn^{2+}$ is:
Fill in the blank with appropriate words.
The electrolytic solution is always neutral because the total charge on $\underline{(i)}$ is equal to $\underline{(ii)}$ on $\underline{(iii)}$. Unlike the metallic conductor, the electrolyte conducts the electric current by virtue of movement of its $\underline{(iv)}$. The property due to which a metal tends to go into solution in term of positive ions is known as $\underline{(v)}$.
(i), (ii), (iii), (iv) and (v) respectively are:
If equivalent conductance of 1M benzoic acid is $12.8\ { ohm }^{ -1 }{ cm }^{ 2 }$ and if the conductance of benzoate ion and ${ H }^{ -1 }$ ion are 42 and $288.42\ { ohm }^{ -1 }{ cm }^{ 2 }$ respectively. Its degree of dissolution is:
Which of the following decreases on dilution of electrolyte solution?
With rise in temperature, electrolytic conductance :
Conductivity of metal decreases with temperature while conductivity of electrolytic conductors :
On increasing temperature, the conduction in metallic conductors :
The molar conductivity of cation and anion of salt $BA$ are $180$ and $220\ mhos\ cm^{2} mol^{-2}$ respectively. The molar conductivity of $BA$ at infinite dilution is:
A solution containing one mole per litre of each $Cu(NO _3) _2$, $AgNO _3, Hg _2(NO _3) _2$ and $Mg(NO _3) _2$ is being electrolysed by using inert electrodes. The values of standard electrode potentials in volts(reduction potential) are.
$Ag^+/Ag=+0.80, Hg^{2+} _2/2Hg =+0.79$
$Cu^{2+}/Cu=+0.34, Mg^{2+}/Mg =-2.37$
With increasing voltage, the sequence of deposition of metals on the cathode will be:
The standard electrode potentials ${\text{E}} _{{{\text{I}} _2}/{1^ - }}^ \circ ,{\text{E}} _{{\text{B}}{{\text{r}}^ - }/{\text{B}}{{\text{r}} _2}}^ \circ $ and ${\text{E}} _{{\text{Fe/F}}{{\text{e}}^{2 + }}}^ \circ $ are respectively $ + 0.54{\text{V,}} - 1.09{\text{V}}$ and 0.44 V. On the basis of the above data which of the following process is nonspontaneous?
An alkali which dissociates partially on passage of an electric current is: