Chemistry-
General
Easy
Question
When a sample of copper containing iron as impurity is purified by electrolysis, the appropriate electrodes are: Cathode Anode
- Pure Iron Pure copper
- Impure sample Pure copper
- Impure iron Impure sample
- Pure copper Impure sample
The correct answer is: Pure copper Impure sample
Related Questions to study
Chemistry-
Parts of aeroplanes are generally made from
Parts of aeroplanes are generally made from
Chemistry-General
Chemistry-
Which is expected to conductor of electricity?
Which is expected to conductor of electricity?
Chemistry-General
Chemistry-
Which gives carbon with conc. H2SO4?
Which gives carbon with conc. H2SO4?
Chemistry-General
Chemistry-
Cryolite is :
Cryolite is :
Chemistry-General
Chemistry-
All ores are minerals while all minerals are not ores because:
All ores are minerals while all minerals are not ores because:
Chemistry-General
Chemistry-
Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?
i)Ag
ii)Cu
iii)Na
iv)Al.
Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?
i)Ag
ii)Cu
iii)Na
iv)Al.
Chemistry-General
Chemistry-
Galvanization is a method of protecting iron from rusting by coating with a thin layer of
Galvanization is a method of protecting iron from rusting by coating with a thin layer of
Chemistry-General
Chemistry-
Corrosion or rusting can be prevented by
Corrosion or rusting can be prevented by
Chemistry-General
Chemistry-
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be:
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be:
Chemistry-General
Chemistry-
Which of the following metals is protected by a layer of its own oxide?
Which of the following metals is protected by a layer of its own oxide?
Chemistry-General
Chemistry-
The correct decreasing order of the metals in the activity series is:
The correct decreasing order of the metals in the activity series is:
Chemistry-General
Chemistry-
The order of reactivity with oxygen is in the order
The order of reactivity with oxygen is in the order
Chemistry-General
Chemistry-
H2SO4 acts as dehydrating agent in its reaction with
H2SO4 acts as dehydrating agent in its reaction with
Chemistry-General
Chemistry-
When an aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that
When an aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that
Chemistry-General
Chemistry-
A student puts one big iron nail in four test tubes containing solutions of zinc sulphate, aluminium sulphate, copper sulphate and iron sulphate. A reddish brown coating was observed only on the surface of iron nail which was put in the solution of:
A student puts one big iron nail in four test tubes containing solutions of zinc sulphate, aluminium sulphate, copper sulphate and iron sulphate. A reddish brown coating was observed only on the surface of iron nail which was put in the solution of:
Chemistry-General
