NEET Test Series from KOTA - 10 Papers In MS WORD
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ELECTROCHEMISTRY
20055
Which of the following statements are true for an fuel cells
1 They run till the reactants are active
2 They are free from pollution
3 They are more efficient
4 All of the above
Explanation:
(d)Fuel cells are more efficient as they are free from pollution and hence they run till the reactants are active. They have longer life than lead storage cells.
ELECTROCHEMISTRY
20058
At \(25\,^oC\) specific conductivity of a normal solution of \(KCl\) is \(0.002765\,mho\). The resistance of cell is \( 400\,ohms\). The cell constant is
20059
Which of the following is used widely in the manufacture of lead storage battery
1 Arsenic
2 Lithium
3 Bismuth
4 Antimony
Explanation:
Antimony is used in making lead storage batteries because lead-containing antimony is harder and more resistant to the action of acids than ordinary lead.
ELECTROCHEMISTRY
20061
If the \(Z{n^{2 + }}/Zn\) electrode is diluted to \(100\) times then the change in e.m.f.
20055
Which of the following statements are true for an fuel cells
1 They run till the reactants are active
2 They are free from pollution
3 They are more efficient
4 All of the above
Explanation:
(d)Fuel cells are more efficient as they are free from pollution and hence they run till the reactants are active. They have longer life than lead storage cells.
ELECTROCHEMISTRY
20058
At \(25\,^oC\) specific conductivity of a normal solution of \(KCl\) is \(0.002765\,mho\). The resistance of cell is \( 400\,ohms\). The cell constant is
20059
Which of the following is used widely in the manufacture of lead storage battery
1 Arsenic
2 Lithium
3 Bismuth
4 Antimony
Explanation:
Antimony is used in making lead storage batteries because lead-containing antimony is harder and more resistant to the action of acids than ordinary lead.
ELECTROCHEMISTRY
20061
If the \(Z{n^{2 + }}/Zn\) electrode is diluted to \(100\) times then the change in e.m.f.
20055
Which of the following statements are true for an fuel cells
1 They run till the reactants are active
2 They are free from pollution
3 They are more efficient
4 All of the above
Explanation:
(d)Fuel cells are more efficient as they are free from pollution and hence they run till the reactants are active. They have longer life than lead storage cells.
ELECTROCHEMISTRY
20058
At \(25\,^oC\) specific conductivity of a normal solution of \(KCl\) is \(0.002765\,mho\). The resistance of cell is \( 400\,ohms\). The cell constant is
20059
Which of the following is used widely in the manufacture of lead storage battery
1 Arsenic
2 Lithium
3 Bismuth
4 Antimony
Explanation:
Antimony is used in making lead storage batteries because lead-containing antimony is harder and more resistant to the action of acids than ordinary lead.
ELECTROCHEMISTRY
20061
If the \(Z{n^{2 + }}/Zn\) electrode is diluted to \(100\) times then the change in e.m.f.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
ELECTROCHEMISTRY
20055
Which of the following statements are true for an fuel cells
1 They run till the reactants are active
2 They are free from pollution
3 They are more efficient
4 All of the above
Explanation:
(d)Fuel cells are more efficient as they are free from pollution and hence they run till the reactants are active. They have longer life than lead storage cells.
ELECTROCHEMISTRY
20058
At \(25\,^oC\) specific conductivity of a normal solution of \(KCl\) is \(0.002765\,mho\). The resistance of cell is \( 400\,ohms\). The cell constant is
20059
Which of the following is used widely in the manufacture of lead storage battery
1 Arsenic
2 Lithium
3 Bismuth
4 Antimony
Explanation:
Antimony is used in making lead storage batteries because lead-containing antimony is harder and more resistant to the action of acids than ordinary lead.
ELECTROCHEMISTRY
20061
If the \(Z{n^{2 + }}/Zn\) electrode is diluted to \(100\) times then the change in e.m.f.