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why should you not touch electrical appliances with wet hands
In the process of electroplating of copper on a metallic spoon, the iron spoon is made the cathode. A thin sheet of pure copper is made the anode. When electricity is passed through the solution, Cu2+ ions move towards the cathode and get reduced to copper metal. This copper metal gets electroplated on the object, i.e., the metalic spoon.
The sulphate ions move towards anode. Here the sulphate ions do not get oxidied. Instead, the copper metal of the anode gets oxidised to Cu2+ ions. These copper ions go into the solution..............
But, why does ths happens? Why does the sulphate ions do not grt oxidised? Instead, why does the copper metal of the anode gets oxidised? Please explain me as fast as possible. I've to give an exam. Hope to get the answer from a MERITNATION EXPERT.
uses and disadvantages of electroplating?
Explain the electrolysis of water with the help of a well labelled diagram also write the chemical reaction taking places at the electrodes.
ARE ACIDS GOOD CONDUCTORS OF ELECTRICITY?
Q196)On passing electricity through copper sulphate solution,
a)Cu is formed at anode b)Cu is formed at cathode c)O2 is formed at anode d)H2 is formed at cathode
WHY?WHAT IS THIS PROCESS CALLED?
Prepare a list of objects around you that are electroplated?
Vegetable oil is a conductor or what ? In the study material it is given that vegetable oil is a poor conductor but in the NCERT solutions it is given that it is a good conductor ?Please tell me the answer fast becausei have my Science FA - 3 on Monday...........
why tin can are used to store food instead of iron can
is milk and honey a good conductor of electricity???
the health concerns associated with chromium electroplating and how are people trying to resolve them
Do honey and milk conduct electricity ?
In which circuit would ammeter A show the greatest current?
give three applications of chemical effect of electric current?
a good example of electroplating...
Difference between electroplating and electrorefining. (any 5)
Is alcohol a good conductor of electricity?
How is potato a good conductor of electricity?
Draw an electrolytic cell and label the following
a) anode
b) cathode and
c) electrolyte
1. Write the chemical formula for the following compounds: (i) Sodium Carbonate (ii) Magnesium Chloride (iii) Ferrous(II) Oxide (iv) Ammonium Sulphite
(v) Aluminium Sulphide (vi) Hydrogen Sulphate
WHY IS LEMON JUICE A GOOD CONDUCTOR OF ELECTRICITY ?
Write a short note on electroplating
What are the advantages of electroplating iron with chromium?
Electrons flow from a body that has an excess of elecrons to one that has a deficit of electrons,i.e from a body that is negativly charged to a body that is positively charged but.........this is given in my book........but acording to potential difference electricity flows from positive charge to negative charge...howww......???plz explain me i m so confused~~
what happens when electric current is passed through tap water?
plzzz... give me the answeer quickly. as i have a test
Plese sujjest me some good science projects for class 8 for interschool science exhibition? Plese tell appoximately 3 projects.
What is the difference between Electro plating,Electro refining and Electro lysis???
WHEN ELECTRIC CURRENT PASSED THROUGH POTATO.....WHY THE POATO BECOMES GREEN???????
is vinegar a good conductor of electricity
why is the blueish-green colour spot found only on the place were positive terminal?
1. Why is it even more dangerous to touch an electric appliance with wet hands than with dry hands?
2. Why do we get electric shocks?
Find out the health concerns associated with chromium electoplating. How are people trying to resolve them?
When the current is allowed to pass from a potato, a greenish-blue spot appears on it. The spot appears because of which chemical? Answer me fastt...... experts
Q) Differentiate between electrolytes and non-electrolytes. ...give two examples of each and .....describe an experiment to identify them as electrolytes and non-electrolytes??...i don't have ans.. pls help me..
Howcome sugar solution is a good conductor of electricity???
Nichrome is a/an
a) Conductor
b) insulator
c) magnet
d) semiconductor please give me the answer
How can you electroplate an iron spoonwith copper?? Pls explain
what is electroplating
copper conducts electricity through electrons, whereas salt solution conducts electricity through ions.do you agree.why?
what do you mean by electric circuit?
how is salt a good conductor of heat ?
when would electric current flow through a conductor
. To remove temporary hardness of water by Clark method the substance used is -
Expensive metals are protected by electroplating.True or false?
Solid Sodium Chloride does not conduct electricity while Sodium Chloride solution conducts.Explain.
Why the object which is to be electroplated is always kept on cathode?
What are the advantages of electroplating ?????????????????????
Please answer this question as soon as possible till 1st November
Copper sulphate solution is a strong electrolyte. Give reason.
solid copper sulphate does not conduct electricity , but when it is dissolved in water, it does conduct electricity.why?
mercury is a liquid and conducts electricity. Do you think it is an electrolyte?
what are the two methods of testing an insulator or conductor?
how does electroplating takes place?
how bulb glows when electricity is passed through it.
explain the heating effect of electric current.
Two cylindrical containers with different base areas are filled with equal volumes of water. The pressure at the base of the containers is same for both of them. A) True B) False
A group of students are asked to move a massive rectangular block. In the first attempt, they drag it. They then moveit by placing it on circular logs. The students found it easierto move the massive rectangular block on circular logs. A) True B) False
The approximate value of speed of sound in glass is ____ m/s. A) 5000 B) 343 C) 1452 D) 1498
For electroplating gold on a copper bangle, the copper bangle is connected to the negative electrode. A) True B) False
The ____ uses two plane mirror strips, each of which is kept inclined at 45o to the axis of the tube. A) periscope B) telescope C) microscope D) photographic camera
Fruits stored in ploythene bags get decomposed quickly because ____. A) polythene encourages growth of bacteria B) of the air present in the bag C) the moisture generated in the bag does not escape D) ethene increases the rate of ripenening of the fruit
Sulphur, when heated, melts and then burns with a blue flame. If the gas produced in the process is dissolved in water, it forms ____. A) sulphur trioxide B) sulphurous acid C) sulphur dioxide D) sulphuric acid
The invisible zone of a candle flame does not contain carbon. A) True B) False
Which of the following does not contribute to nitrogen availability in the soil? A) Decay of organic matter B) Cyanobacteria C) Nostoc D) Rhizobium
Which of the following is responsible for transporting water from the root to different parts of a plant? A) Stomata B) Phloem C) Xylem D) Veins
pls be fast
IS BASES ARE GOOD CONDUCTORS OF ELETRICITY?
Explain why the blue colour of copper chloride fades away gradually during electrolysis?
Why are fuse wires used in the electrical circuits at home? Why are they not used in a circuit containing electric cells?
Explain the process of electroplating...!!!
find out the health concerns associated with chromium electroplating.How are people trying to resolve them?
why are carbon electrodes commonly used in electrolytic cells
1)Describe an activity to demonstrate magnetic effect of current.
2) What happens when current is passed through water.
Describe an activity to show electrolysis of water is carried out.
What is ionisation? (7-8 lines)
describe an experiment to show the chemical effect of electric current.
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Syllabus
why should you not touch electrical appliances with wet hands
In the process of electroplating of copper on a metallic spoon, the iron spoon is made the cathode. A thin sheet of pure copper is made the anode. When electricity is passed through the solution, Cu2+ ions move towards the cathode and get reduced to copper metal. This copper metal gets electroplated on the object, i.e., the metalic spoon.
The sulphate ions move towards anode. Here the sulphate ions do not get oxidied. Instead, the copper metal of the anode gets oxidised to Cu2+ ions. These copper ions go into the solution..............
But, why does ths happens? Why does the sulphate ions do not grt oxidised? Instead, why does the copper metal of the anode gets oxidised? Please explain me as fast as possible. I've to give an exam. Hope to get the answer from a MERITNATION EXPERT.
uses and disadvantages of electroplating?
Explain the electrolysis of water with the help of a well labelled diagram also write the chemical reaction taking places at the electrodes.
ARE ACIDS GOOD CONDUCTORS OF ELECTRICITY?
Q196)On passing electricity through copper sulphate solution,
a)Cu is formed at anode b)Cu is formed at cathode c)O2 is formed at anode d)H2 is formed at cathode
WHY?WHAT IS THIS PROCESS CALLED?
Prepare a list of objects around you that are electroplated?
Vegetable oil is a conductor or what ? In the study material it is given that vegetable oil is a poor conductor but in the NCERT solutions it is given that it is a good conductor ?Please tell me the answer fast becausei have my Science FA - 3 on Monday...........
why tin can are used to store food instead of iron can
is milk and honey a good conductor of electricity???
the health concerns associated with chromium electroplating and how are people trying to resolve them
Do honey and milk conduct electricity ?
In which circuit would ammeter A show the greatest current?
give three applications of chemical effect of electric current?
a good example of electroplating...
Difference between electroplating and electrorefining. (any 5)
Is alcohol a good conductor of electricity?
How is potato a good conductor of electricity?
Draw an electrolytic cell and label the following
a) anode
b) cathode and
c) electrolyte
(a) to increase acidity
(b) to increase conductivity
Q2. In which of the following current is not conducted by electrons?
(a) mercury
(b)silver
(c)common salt
(d)copper
Q3. Why is it important to prepare the surface before beginning electroplating?
1. Write the chemical formula for the following compounds:
(i) Sodium Carbonate
(ii) Magnesium Chloride
(iii) Ferrous(II) Oxide
(iv) Ammonium Sulphite
(v) Aluminium Sulphide
(vi) Hydrogen Sulphate
WHY IS LEMON JUICE A GOOD CONDUCTOR OF ELECTRICITY ?
Write a short note on electroplating
What is the answer??
What are the advantages of electroplating iron with chromium?
Electrons flow from a body that has an excess of elecrons to one that has a deficit of electrons,i.e from a body that is negativly charged to a body that is positively charged but.........this is given in my book........but acording to potential difference electricity flows from positive charge to negative charge...howww......???plz explain me i m so confused~~
what happens when electric current is passed through tap water?
plzzz... give me the answeer quickly. as i have a test
Plese sujjest me some good science projects for class 8 for interschool science exhibition? Plese tell appoximately 3 projects.
a)electrolytic solution ,cation ,anion ,cathode ,reduction. b)current ,voltmeter ,electrolytic cell ,ammeter ,battery.
c)plug ,conductor ,Bakelite ,insulator.
What is the difference between Electro plating,Electro refining and Electro lysis???
WHEN ELECTRIC CURRENT PASSED THROUGH POTATO.....WHY THE POATO BECOMES GREEN???????
is vinegar a good conductor of electricity
why is the blueish-green colour spot found only on the place were positive terminal?
Q. Four processes are used to charge an isolated metal sphere.
(i) The sphere is earthed by touching it.
(ii) The earth connection is removed from the sphere.
(iii) A charged rod is brought close to the sphere.
(iv) The charged rod is removed.
1. Why is it even more dangerous to touch an electric appliance with wet hands than with dry hands?
rn2. Why do we get electric shocks?
Find out the health concerns associated with chromium electoplating. How are people trying to resolve them?
When the current is allowed to pass from a potato, a greenish-blue spot appears on it. The spot appears because of which chemical? Answer me fastt...... experts
Q) Differentiate between electrolytes and non-electrolytes. ...give two examples of each and .....describe an experiment to identify them as electrolytes and non-electrolytes??...i don't have ans.. pls help me..
Howcome sugar solution is a good conductor of electricity???
Nichrome is a/an
a) Conductor
b) insulator
c) magnet
d) semiconductor please give me the answer
How can you electroplate an iron spoonwith copper?? Pls explain
what is electroplating
copper conducts electricity through electrons, whereas salt solution conducts electricity through ions.do you agree.why?
what do you mean by electric circuit?
how is salt a good conductor of heat ?
when would electric current flow through a conductor
. To remove temporary hardness of water by Clark method the substance used is -
Expensive metals are protected by electroplating.True or false?
Solid Sodium Chloride does not conduct electricity while Sodium Chloride solution conducts.Explain.
Why the object which is to be electroplated is always kept on cathode?
What are the advantages of electroplating ?????????????????????
Please answer this question as soon as possible till 1st November
Copper sulphate solution is a strong electrolyte. Give reason.
solid copper sulphate does not conduct electricity , but when it is dissolved in water, it does conduct electricity.why?
mercury is a liquid and conducts electricity. Do you think it is an electrolyte?
what are the two methods of testing an insulator or conductor?
how does electroplating takes place?
how bulb glows when electricity is passed through it.
explain the heating effect of electric current.
Question 1
Two cylindrical containers with different base areas are filled with equal volumes of water. The pressure at the base of the containers is same for both of them.
A) True
B) False
Question 2
A group of students are asked to move a massive rectangular block. In the first attempt, they drag it. They then moveit by placing it on circular logs. The students found it easierto move the massive rectangular block on circular logs.
A) True
B) False
Question 3
The approximate value of speed of sound in glass is ____ m/s.
A) 5000
B) 343
C) 1452
D) 1498
Question 4
For electroplating gold on a copper bangle, the copper bangle is connected to the negative electrode.
A) True
B) False
Question 5
The ____ uses two plane mirror strips, each of which is kept inclined at 45o to the axis of the tube.
A) periscope
B) telescope
C) microscope
D) photographic camera
Question 6
Fruits stored in ploythene bags get decomposed quickly because ____.
A) polythene encourages growth of bacteria
B) of the air present in the bag
C) the moisture generated in the bag does not escape
D) ethene increases the rate of ripenening of the fruit
Question 7
Sulphur, when heated, melts and then burns with a blue flame. If the gas produced in the process is dissolved in water, it forms ____.
A) sulphur trioxide
B) sulphurous acid
C) sulphur dioxide
D) sulphuric acid
Question 8
The invisible zone of a candle flame does not contain carbon.
A) True
B) False
Question 9
Which of the following does not contribute to nitrogen availability in the soil?
A) Decay of organic matter
B) Cyanobacteria
C) Nostoc
D) Rhizobium
Question 10
Which of the following is responsible for transporting water from the root to different parts of a plant?
A) Stomata
B) Phloem
C) Xylem
D) Veins
pls be fast
IS BASES ARE GOOD CONDUCTORS OF ELETRICITY?
Explain why the blue colour of copper chloride fades away gradually during electrolysis?
Why are fuse wires used in the electrical circuits at home? Why are they not used in a circuit containing electric cells?
Explain the process of electroplating...!!!
find out the health concerns associated with chromium electroplating.How are people trying to resolve them?
1) Flow of charge in a conductor
Fill in the blanks:-
1) Positively charged particles in an electrolyte are called ____________ and negatively charged particles are called___________.
True or false:-
1) flow of electrons has energy that can be used to perform useful work.
Answer in one or two words only.
1) What charge would there be on a body that has an excess of electrons?
Pls answer all question pls pls pls......
why are carbon electrodes commonly used in electrolytic cells
1)Describe an activity to demonstrate magnetic effect of current.
2) What happens when current is passed through water.
Describe an activity to show electrolysis of water is carried out.
What is ionisation? (7-8 lines)
describe an experiment to show the chemical effect of electric current.