276235
Which of the following is not true regarding the usage of hydrogen as a fuel?
1 High calorific value
2 The combustible energy of hydrogen can be directly converted to electrical energy in a fuel cell
3 Combustion product is ecofriendly
4 Hydrogen gas can be easily liquefied and stored
Explanation:
It is true about hydrogen to be used as a fuel. Hydrogen is highly inflammable and hence storage is difficult. Hydrogen has low critical temperature and hence not easily liquefied. It is true that the combustible energy can be directly converted to electrical energy is a fuel cell.
Karnataka-CET-2019
ELECTROCHEMISTRY
276242
For car battery which one is correct statement?
1 Cathode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$ and anode is copper $(\mathrm{Cu})$
2 Cathode is copper $(\mathrm{Cu})$ and anode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$
3 Cathode is copper $(\mathrm{Cu})$ and anode is lead $(\mathrm{Pb})$
4 Cathode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$ and anode is lead $(\mathrm{Pb})$
Explanation:
The anode is a positively charged electrode within the battery which allows the electrons to travel outside of the battery . The negatively charged electrode through which the electrons re-enter. Car battery is a lead storage battery in which cathode is made of $\mathrm{PbO}_{2}$ and anode is made of $\mathrm{Pb}$-plate. $\mathrm{PbO}_{2}\left(\mathrm{~Pb}^{4+}\right)$ reduce to $\mathrm{Pb}^{2+}$ at cathode while $\mathrm{Pb}$ oxidise to $\mathrm{Pb}^{2+}$ at anode.
UPTU/UPSEE-2017
ELECTROCHEMISTRY
276244
Which of the following is incorrect in a galvanic cell?
1 Oxidation occurs at anode
2 Reduction occurs at cathode
3 The electrode at which electrons are gained is called cathode
4 The electrode at which electrons are lost is called cathode
Explanation:
A galvanic cell is an electrochemical cell in which oxidation occurs at anode containing negative charge and reduction occur at cathode containing a positive charge. At the electrode at which electrons are lost is called anode. The anode is where the oxidation reaction take place. In other words this is where the metal loses electrons.
Karnataka-CET-2016
ELECTROCHEMISTRY
276245
A secondary cell is one
1 can be recharged
2 can be recharged by passing current through it in the same direction
3 can be recharged by passing current through it in the opposite direction
4 cannot be recharged
Explanation:
A secondary cell is a type of cell which can be recharged by passing current through it in the opposite direction once the cell is discharged. They can be recharged by passing current through it in the opposite direction.
Karnataka-CET-2016
ELECTROCHEMISTRY
276246
In dry cell, what acts as a negative electrode?
1 Zinc
2 Graphite
3 Ammonium chloride
4 Manganese dioxide
Explanation:
In a dry cell zinc acts as negative electrode. A zinc carbon battery is a dry cell battery between a zinc metal electrode and a carbon rod from an electrochemical reaction between zinc and manganese dioxide mediated by a suitable electrolyte. Zinc acts as a negative electrode as it has more negative potential and acts as the anode.
276235
Which of the following is not true regarding the usage of hydrogen as a fuel?
1 High calorific value
2 The combustible energy of hydrogen can be directly converted to electrical energy in a fuel cell
3 Combustion product is ecofriendly
4 Hydrogen gas can be easily liquefied and stored
Explanation:
It is true about hydrogen to be used as a fuel. Hydrogen is highly inflammable and hence storage is difficult. Hydrogen has low critical temperature and hence not easily liquefied. It is true that the combustible energy can be directly converted to electrical energy is a fuel cell.
Karnataka-CET-2019
ELECTROCHEMISTRY
276242
For car battery which one is correct statement?
1 Cathode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$ and anode is copper $(\mathrm{Cu})$
2 Cathode is copper $(\mathrm{Cu})$ and anode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$
3 Cathode is copper $(\mathrm{Cu})$ and anode is lead $(\mathrm{Pb})$
4 Cathode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$ and anode is lead $(\mathrm{Pb})$
Explanation:
The anode is a positively charged electrode within the battery which allows the electrons to travel outside of the battery . The negatively charged electrode through which the electrons re-enter. Car battery is a lead storage battery in which cathode is made of $\mathrm{PbO}_{2}$ and anode is made of $\mathrm{Pb}$-plate. $\mathrm{PbO}_{2}\left(\mathrm{~Pb}^{4+}\right)$ reduce to $\mathrm{Pb}^{2+}$ at cathode while $\mathrm{Pb}$ oxidise to $\mathrm{Pb}^{2+}$ at anode.
UPTU/UPSEE-2017
ELECTROCHEMISTRY
276244
Which of the following is incorrect in a galvanic cell?
1 Oxidation occurs at anode
2 Reduction occurs at cathode
3 The electrode at which electrons are gained is called cathode
4 The electrode at which electrons are lost is called cathode
Explanation:
A galvanic cell is an electrochemical cell in which oxidation occurs at anode containing negative charge and reduction occur at cathode containing a positive charge. At the electrode at which electrons are lost is called anode. The anode is where the oxidation reaction take place. In other words this is where the metal loses electrons.
Karnataka-CET-2016
ELECTROCHEMISTRY
276245
A secondary cell is one
1 can be recharged
2 can be recharged by passing current through it in the same direction
3 can be recharged by passing current through it in the opposite direction
4 cannot be recharged
Explanation:
A secondary cell is a type of cell which can be recharged by passing current through it in the opposite direction once the cell is discharged. They can be recharged by passing current through it in the opposite direction.
Karnataka-CET-2016
ELECTROCHEMISTRY
276246
In dry cell, what acts as a negative electrode?
1 Zinc
2 Graphite
3 Ammonium chloride
4 Manganese dioxide
Explanation:
In a dry cell zinc acts as negative electrode. A zinc carbon battery is a dry cell battery between a zinc metal electrode and a carbon rod from an electrochemical reaction between zinc and manganese dioxide mediated by a suitable electrolyte. Zinc acts as a negative electrode as it has more negative potential and acts as the anode.
276235
Which of the following is not true regarding the usage of hydrogen as a fuel?
1 High calorific value
2 The combustible energy of hydrogen can be directly converted to electrical energy in a fuel cell
3 Combustion product is ecofriendly
4 Hydrogen gas can be easily liquefied and stored
Explanation:
It is true about hydrogen to be used as a fuel. Hydrogen is highly inflammable and hence storage is difficult. Hydrogen has low critical temperature and hence not easily liquefied. It is true that the combustible energy can be directly converted to electrical energy is a fuel cell.
Karnataka-CET-2019
ELECTROCHEMISTRY
276242
For car battery which one is correct statement?
1 Cathode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$ and anode is copper $(\mathrm{Cu})$
2 Cathode is copper $(\mathrm{Cu})$ and anode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$
3 Cathode is copper $(\mathrm{Cu})$ and anode is lead $(\mathrm{Pb})$
4 Cathode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$ and anode is lead $(\mathrm{Pb})$
Explanation:
The anode is a positively charged electrode within the battery which allows the electrons to travel outside of the battery . The negatively charged electrode through which the electrons re-enter. Car battery is a lead storage battery in which cathode is made of $\mathrm{PbO}_{2}$ and anode is made of $\mathrm{Pb}$-plate. $\mathrm{PbO}_{2}\left(\mathrm{~Pb}^{4+}\right)$ reduce to $\mathrm{Pb}^{2+}$ at cathode while $\mathrm{Pb}$ oxidise to $\mathrm{Pb}^{2+}$ at anode.
UPTU/UPSEE-2017
ELECTROCHEMISTRY
276244
Which of the following is incorrect in a galvanic cell?
1 Oxidation occurs at anode
2 Reduction occurs at cathode
3 The electrode at which electrons are gained is called cathode
4 The electrode at which electrons are lost is called cathode
Explanation:
A galvanic cell is an electrochemical cell in which oxidation occurs at anode containing negative charge and reduction occur at cathode containing a positive charge. At the electrode at which electrons are lost is called anode. The anode is where the oxidation reaction take place. In other words this is where the metal loses electrons.
Karnataka-CET-2016
ELECTROCHEMISTRY
276245
A secondary cell is one
1 can be recharged
2 can be recharged by passing current through it in the same direction
3 can be recharged by passing current through it in the opposite direction
4 cannot be recharged
Explanation:
A secondary cell is a type of cell which can be recharged by passing current through it in the opposite direction once the cell is discharged. They can be recharged by passing current through it in the opposite direction.
Karnataka-CET-2016
ELECTROCHEMISTRY
276246
In dry cell, what acts as a negative electrode?
1 Zinc
2 Graphite
3 Ammonium chloride
4 Manganese dioxide
Explanation:
In a dry cell zinc acts as negative electrode. A zinc carbon battery is a dry cell battery between a zinc metal electrode and a carbon rod from an electrochemical reaction between zinc and manganese dioxide mediated by a suitable electrolyte. Zinc acts as a negative electrode as it has more negative potential and acts as the anode.
NEET Test Series from KOTA - 10 Papers In MS WORD
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ELECTROCHEMISTRY
276235
Which of the following is not true regarding the usage of hydrogen as a fuel?
1 High calorific value
2 The combustible energy of hydrogen can be directly converted to electrical energy in a fuel cell
3 Combustion product is ecofriendly
4 Hydrogen gas can be easily liquefied and stored
Explanation:
It is true about hydrogen to be used as a fuel. Hydrogen is highly inflammable and hence storage is difficult. Hydrogen has low critical temperature and hence not easily liquefied. It is true that the combustible energy can be directly converted to electrical energy is a fuel cell.
Karnataka-CET-2019
ELECTROCHEMISTRY
276242
For car battery which one is correct statement?
1 Cathode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$ and anode is copper $(\mathrm{Cu})$
2 Cathode is copper $(\mathrm{Cu})$ and anode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$
3 Cathode is copper $(\mathrm{Cu})$ and anode is lead $(\mathrm{Pb})$
4 Cathode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$ and anode is lead $(\mathrm{Pb})$
Explanation:
The anode is a positively charged electrode within the battery which allows the electrons to travel outside of the battery . The negatively charged electrode through which the electrons re-enter. Car battery is a lead storage battery in which cathode is made of $\mathrm{PbO}_{2}$ and anode is made of $\mathrm{Pb}$-plate. $\mathrm{PbO}_{2}\left(\mathrm{~Pb}^{4+}\right)$ reduce to $\mathrm{Pb}^{2+}$ at cathode while $\mathrm{Pb}$ oxidise to $\mathrm{Pb}^{2+}$ at anode.
UPTU/UPSEE-2017
ELECTROCHEMISTRY
276244
Which of the following is incorrect in a galvanic cell?
1 Oxidation occurs at anode
2 Reduction occurs at cathode
3 The electrode at which electrons are gained is called cathode
4 The electrode at which electrons are lost is called cathode
Explanation:
A galvanic cell is an electrochemical cell in which oxidation occurs at anode containing negative charge and reduction occur at cathode containing a positive charge. At the electrode at which electrons are lost is called anode. The anode is where the oxidation reaction take place. In other words this is where the metal loses electrons.
Karnataka-CET-2016
ELECTROCHEMISTRY
276245
A secondary cell is one
1 can be recharged
2 can be recharged by passing current through it in the same direction
3 can be recharged by passing current through it in the opposite direction
4 cannot be recharged
Explanation:
A secondary cell is a type of cell which can be recharged by passing current through it in the opposite direction once the cell is discharged. They can be recharged by passing current through it in the opposite direction.
Karnataka-CET-2016
ELECTROCHEMISTRY
276246
In dry cell, what acts as a negative electrode?
1 Zinc
2 Graphite
3 Ammonium chloride
4 Manganese dioxide
Explanation:
In a dry cell zinc acts as negative electrode. A zinc carbon battery is a dry cell battery between a zinc metal electrode and a carbon rod from an electrochemical reaction between zinc and manganese dioxide mediated by a suitable electrolyte. Zinc acts as a negative electrode as it has more negative potential and acts as the anode.
276235
Which of the following is not true regarding the usage of hydrogen as a fuel?
1 High calorific value
2 The combustible energy of hydrogen can be directly converted to electrical energy in a fuel cell
3 Combustion product is ecofriendly
4 Hydrogen gas can be easily liquefied and stored
Explanation:
It is true about hydrogen to be used as a fuel. Hydrogen is highly inflammable and hence storage is difficult. Hydrogen has low critical temperature and hence not easily liquefied. It is true that the combustible energy can be directly converted to electrical energy is a fuel cell.
Karnataka-CET-2019
ELECTROCHEMISTRY
276242
For car battery which one is correct statement?
1 Cathode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$ and anode is copper $(\mathrm{Cu})$
2 Cathode is copper $(\mathrm{Cu})$ and anode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$
3 Cathode is copper $(\mathrm{Cu})$ and anode is lead $(\mathrm{Pb})$
4 Cathode is lead dioxide $\left(\mathrm{PbO}_{2}\right)$ and anode is lead $(\mathrm{Pb})$
Explanation:
The anode is a positively charged electrode within the battery which allows the electrons to travel outside of the battery . The negatively charged electrode through which the electrons re-enter. Car battery is a lead storage battery in which cathode is made of $\mathrm{PbO}_{2}$ and anode is made of $\mathrm{Pb}$-plate. $\mathrm{PbO}_{2}\left(\mathrm{~Pb}^{4+}\right)$ reduce to $\mathrm{Pb}^{2+}$ at cathode while $\mathrm{Pb}$ oxidise to $\mathrm{Pb}^{2+}$ at anode.
UPTU/UPSEE-2017
ELECTROCHEMISTRY
276244
Which of the following is incorrect in a galvanic cell?
1 Oxidation occurs at anode
2 Reduction occurs at cathode
3 The electrode at which electrons are gained is called cathode
4 The electrode at which electrons are lost is called cathode
Explanation:
A galvanic cell is an electrochemical cell in which oxidation occurs at anode containing negative charge and reduction occur at cathode containing a positive charge. At the electrode at which electrons are lost is called anode. The anode is where the oxidation reaction take place. In other words this is where the metal loses electrons.
Karnataka-CET-2016
ELECTROCHEMISTRY
276245
A secondary cell is one
1 can be recharged
2 can be recharged by passing current through it in the same direction
3 can be recharged by passing current through it in the opposite direction
4 cannot be recharged
Explanation:
A secondary cell is a type of cell which can be recharged by passing current through it in the opposite direction once the cell is discharged. They can be recharged by passing current through it in the opposite direction.
Karnataka-CET-2016
ELECTROCHEMISTRY
276246
In dry cell, what acts as a negative electrode?
1 Zinc
2 Graphite
3 Ammonium chloride
4 Manganese dioxide
Explanation:
In a dry cell zinc acts as negative electrode. A zinc carbon battery is a dry cell battery between a zinc metal electrode and a carbon rod from an electrochemical reaction between zinc and manganese dioxide mediated by a suitable electrolyte. Zinc acts as a negative electrode as it has more negative potential and acts as the anode.