Chemistry Test 28

Result

Chemistry Test 28

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

When electric current is supplied through an ionic hydride of fused state, then

A
Hydrogen is obtained at anode

B
Hydrogen is obtained at cathode

C
Hydride ion moves towards cathode

D
No change

Solution

On electrolysis of fused ionic hydride (LiH), hydrogen obtained at anode.

MH + H₂O → MOH + H₂ ↑
Question 2
4 / -1

Kohlrausch's law states that at

A
finite dilution, each ion makes definite contribution to equivalent conductance of an electrolyte, whatever be the nature of the other ion of the electrolyte.

B
infinite dilution, each ion makes definite contribution to equivalent conductance of an electrolyte depending on the nature of the other ion of the electrolyte.

C
infinite dilution, each ion makes definite contribution to conductance of an electrolyte whatever be the nature of the other ion of the electrolyte.

D
infinite dilution, each ion makes definite contribution to equivalent conductance of an electrolyte, whatever be the nature of the other ion of the electrolyte.

Solution

Kohlrausch's law states that "at infinite dilution , each ion makes a definite contribution towards equivalent conductance of the electrolyte IRRESPECTIVE of the nature of the other ion with which it is associated. It is due to this reason , it is also called as the law of independent migration of ions.

In other words, equivalent conductivity of an electrolyte at infinite dilution is equal to the sum of the equivalent conductivities of the cation and anion an electrolyte is made up of.
Question 3
4 / -1

Which substance eliminates bromine from KBr solution

A
I₂

B
Cl₂

C
HI

D
SO₂

Solution

Substance eliminates bromine from KBr solution Cl₂
Question 4
4 / -1

The most convenient method to protect the bottom of ship made of iron is:

A
Coating it with red lead oxide

B
White tin plating

C
Connecting it with Mg block

D
Connecting it with Pb block

Solution

White tin plating helps to prevent the build up of barnacles.