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CBSE - VIII - Science - Chemical Effects of Electric Current
Mam /sir i had given a test and came across a question Which of the following does not conduct electricity? copper alcohol dilute sulphuric acid vineger the ans said it was alcohol but viniger also doesnt conduct electricity . so shouldn 't there be an option saying both B and D
Asked by desaitd
6th January 2024,
10:32 AM
CBSE - VIII - Science - Chemical Effects of Electric Current
can you explain me Types of charges and their interaction please
Asked by kamrannisar47
18th December 2023,
6:58 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
what is elecrolysis
Asked by swushami
23rd November 2023,
7:42 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
what is cell
Asked by gautamdeepak0055
21st November 2023,
4:46 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
Draw a current diagrams on a dry cell connected to a ball through a switch. Mark the positive and negative terminal of the cell and the direction of flow a.electron b.conventional current
Asked by sharephoto7272
19th October 2023,
7:17 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
define a cell
Asked by vikashaqla
30th July 2020,
11:19 AM
CBSE - VIII - Science - Chemical Effects of Electric Current
Why electricity can pass through conducter, not by insulator??
Asked by 2ritamjha2018
28th March 2020,
7:42 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
What is electroplating? How will you carry out electroplating of copper in the laboratory.
Asked by gspublicschool
20th March 2019,
11:23 AM
CBSE - VIII - Science - Chemical Effects of Electric Current
Write short note on. Electroplating
Asked by Jaygaikwad0125
14th March 2019,
2:43 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
Mention the components of the circuit of tester
Asked by priyarockzz111
2nd February 2019,
6:26 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
Why do impurities dissolved in water increse its productivity?
Asked by deepikankur
19th December 2017,
7:20 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
the actual direction of flow of charge is from positve to negitive or only conventional flow of charge
is taken to be flowing from positve to negitve?
please tell...
Asked by yogeshmittal177
13th October 2015,
9:47 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
i want to ask that when current moves from a metal etc.. then is electricity is conducted only due to flow of electrons? if no then why we see that current moves from negitve electrode to positve electrode?
Asked by yogeshmittal177
28th September 2015,
11:18 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
what is electrolysis and what is its effect in day to day life?
Asked by Petulla Mishra
16th November 2014,
7:34 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
How will you identify the positive terminal of a battery if it is hidden in a box and you can only see two of its leads.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
How is electroplating used to save iron from corrosion?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
Mention any two applications of electrolysis.
Asked by Topperlearning User
30th January 2014,
10:14 AM
CBSE - VIII - Science - Chemical Effects of Electric Current
If metal electrodes are coated with an insulator, what will happen during electroplating?
Asked by Topperlearning User
30th January 2014,
10:13 AM
CBSE - VIII - Science - Chemical Effects of Electric Current
Define (i) Electrolyte (ii) Cathode (iii) Anode
Asked by Topperlearning User
30th January 2014,
10:12 AM
CBSE - VIII - Science - Chemical Effects of Electric Current
Define electroplating. List any three uses of it.
Asked by Topperlearning User
30th January 2014,
10:11 AM
CBSE - VIII - Science - Chemical Effects of Electric Current
In what way does adding an impurity like salt affect the conductivity of pure water?
Asked by Topperlearning User
22nd December 2013,
10:50 AM
CBSE - VIII - Science - Chemical Effects of Electric Current
How will you modify an electroplating circuit to clearly indicate that the electroplating process is over?
Asked by Topperlearning User
21st December 2013,
11:42 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
During electroplating, initially some bubbles were appearing near an electrode. After 30 mins, no bubbles appear. What do you conclude from this?
Asked by Topperlearning User
21st December 2013,
11:37 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
Mention three common solutions that are good conductors of electric current. What is common in these solutions?
Asked by Topperlearning User
21st December 2013,
11:23 PM
CBSE - VIII - Science - Chemical Effects of Electric Current
How does the amount of copper in copper sulphate solution not reduce during electroplating of copper onto an iron object, even though copper from the solution gets deposited on one electrode continuously?
Asked by Topperlearning User
29th November 2013,
1:09 AM
CBSE - VIII - Science - Chemical Effects of Electric Current
What effects does an electric current produce when flowing through a conducting solution?
Asked by Topperlearning User
22nd November 2013,
3:31 AM
CBSE - VIII - Science - Chemical Effects of Electric Current
Gold does not corrode. Despite this, gold ornaments start showing patches of other color after repeated use. Why?
Asked by Topperlearning User
22nd November 2013,
1:37 AM
