Chemical effect of Electric current

Adding common salt to distilled water makes it

• Good Conductor

• Poor Conductor

• No change

• Both A and B

An electrolyte is

• a metal

• a solution

• a liquid that conducts electricity

• none of these

Tags

NGSS.HS-PS2-5

Flow of electrons is called

• Electrode

• Electrolyte

• Electric current

• Electroplating

Electroplating is based on ___________of an electric current.

• Physical effect

• Chemical effect

• Heating effect

• Magnetic effect

Which of the following solutions will not make the bulb in Fig 14.2 glow?

(a)

(b)

(c)

(d)

• sodium chlorides

• copper sulphate

• silver nitrate

• sugar solution in diluted water

Tags

NGSS.HS-PS1-3

Which one of the following solutions will not conduct electricity?

• lemon juice

• vinegar

• tap water

• vegetable oil

Tags

NGSS.MS-PS2-3

Who discovered chemical effect of elecric current?

• Thomas Edison

• Joule-Lenz

• Michael Faraday

• James Watt

Which of the following metals is used in electroplating to make objects appear shining?

• iron

• aluminium

• copper

• chromium

Which equation shows what happen to chloride ions at the anode.

• Cl^- --> Cl + e-

• 2Cl^- --> Cl₂ + 2e-

• Cl₂ - -> 2e- + 2Cl^-

• Cl₂ + 2e- _--> 2Cl^-

Tags

NGSS.HS-PS3-5

Which statement correctly describes the 2 electrodes?

• The anode is negative and the cathode is positive
• The anode and cathode are both positive
• The anode is positive and the cathode is negative
• The anode and cathode are both negative.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5