15027302
Descripción
Test por Jeffrey Piggott, actualizado hace más de 1 año
|
Creado por Jeffrey Piggott
hace más de 5 años
|
|
Pregunta 1
Pregunta
The diagram shows a section of an overhead power cable.
Which statement explains why a particular substance is used?
Image:
O1 (binary/octet-stream)
Respuesta
-
A Aluminium has a low density and is a good conductor of electricity.
-
B Ceramic is a good conductor of electricity.
-
C Steel can rust in damp air.
-
D Steel is more dense than aluminium.
Pregunta 2
Pregunta
The diagram shows the electrolysis of concentrated hydrochloric acid and concentrated aqueous sodium chloride using carbon electrodes.
At which electrode(s) is hydrogen produced?
Image:
Q2 (binary/octet-stream)
Respuesta
-
A electrode 1 only
-
B electrodes 1 and 3
-
C electrode 2 only
-
D electrodes 2 and 4
Pregunta 3
Pregunta
What are the electrode products when molten silver iodide is electrolysed between inert electrodes?
Image:
Q3 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 4
Pregunta
Copper and hydrogen can each be formed by electrolysis.
At which electrodes are these elements formed?
Image:
Q4 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 5
Pregunta
The diagram shows a failed attempt to copper-plate a pan.
Which action will plate the pan with copper?
Image:
Q5 (binary/octet-stream)
Respuesta
-
A cooling the copper sulfate solution in an ice bath
-
B heating the copper sulfate solution to boiling point
-
C increasing the voltage from 3 V to 6 V
-
D making the pan the cathode and the copper the anode
Pregunta 6
Pregunta
The diagram shows the electroplating of a steel object.
A student made the following statements.
1 The object turns a reddish-brown colour.
2 The copper sulfate solution changes to a paler blue colour.
3 The copper electrode becomes smaller.
Which statements are correct?
Image:
Q6 (binary/octet-stream)
Respuesta
-
A 1, 2 and 3
-
B 1 and 2 only
-
C 1 and 3 only
-
D 2 and 3 only
Pregunta 7
Pregunta
The diagram shows an electrolysis experiment.
During the electrolysis, sodium was formed at electrode P and chlorine at electrode Q.
Which row correctly identifies P, Q and X?
Image:
Q7 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 8
Pregunta
The diagram shows apparatus for plating a spoon with silver.
Which statement is not correct?
Image:
Q6 (binary/octet-stream)
Respuesta
-
A Silver would stick to the spoon because it is a very reactive metal.
-
B The electrolyte would be a silver salt dissolved in water.
-
C The metal electrode would be made from silver.
-
D The spoon would be connected to the negative terminal of the power supply.
Pregunta 9
Pregunta
Which metal could not be used for electroplating by using an aqueous solution?
Respuesta
-
A chromium
-
B copper
-
C silver
-
D sodium
Pregunta 10
Pregunta
Which products are formed at the electrodes when a concentrated solution of sodium chloride is electrolysed?
Image:
Q8 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 11
Pregunta
A student wishes to electroplate an object with copper.
Which row is correct?
Image:
Q11 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 12
Pregunta
In the electrolysis shown, chlorine is produced at W and sodium at X.
Which labels are correct?
Image:
Q13 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 13
Pregunta
Which substance will not conduct electricity?
Respuesta
-
A aluminium
-
B copper
-
C plastic
-
D steel
Pregunta 14
Pregunta
Electrical cables are made from either ……1……, because it is a very good conductor of
electricity, or from……2……, because it has a low density.
Overhead cables have a ……3…… core in order to give the cable strength.
Which words correctly complete gaps 1, 2 and 3?
Image:
Q15 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
¿Quieres crear tus propios Tests gratis con GoConqr? Más información.