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What is the fate of $O_2$ at the end of the Electron Transport System (ETS)?
The NCERT states, 'In this process O2 is the ultimate acceptor of electrons and it gets reduced to water.'
The conversion of GTP to GDP with the simultaneous synthesis of ATP from ADP is an example of:
The NCERT text mentions, 'During the conversion of succinyl-CoA to succinic acid a molecule of GTP is synthesised. This is a substrate level phosphorylation. In a coupled reaction GTP is converted to GDP with the simultaneous synthesis of ATP from ADP.'
Which of the following describes the function of a secondary battery?
According to the NCERT text, 'A secondary cell after use can be recharged by passing current through it in the opposite direction so that it can be used again.' This allows it to be used multiple times.
What is the approximate cell potential of a mercury cell and how does it behave during its lifespan?
The NCERT text states: 'The cell potential is approximately 1.35 V and remains constant during its life as the overall reaction does not involve any ion in solution whose concentration can change during its lifetime.'
Which of the following statements is true regarding fuel cells?
The NCERT text defines fuel cells as 'Galvanic cells that are designed to convert the energy of combustion of fuels like hydrogen, methane, methanol, etc. directly into electrical energy are called fuel cells.'
In a lead storage battery, what acts as the anode and cathode during discharge?
The NCERT text states: 'It consists of a lead anode and a grid of lead packed with lead dioxide (PbO$_{2}$) as cathode.'
What is the electrolyte used in a lead storage battery?
The NCERT text mentions: 'A 38% solution of sulphuric acid is used as an electrolyte' in the lead storage battery.
What is the overall reaction that occurs during the discharge of a lead storage battery?
The NCERT text provides the 'overall cell reaction consisting of cathode and anode reactions' during use (discharge) as: Pb(s) + PbO$_{2}$(s) + 2H$_{2}$SO$_{4}$(aq) $\rightarrow$ 2PbSO$_{4}$(s) + 2H$_{2}$O(l).
During the charging of a lead storage battery, what happens to the products formed during discharge?
The NCERT text states: 'On charging the battery the reaction is reversed and PbSO$_{4}$(s) on anode and cathode is converted into Pb and PbO$_{2}$, respectively.'
Which of the following is an advantage of a nickel-cadmium cell over a lead storage cell?
The NCERT text states: 'Another important secondary cell is the nickel-cadmium cell... which has longer life than the lead storage cell but more expensive to manufacture.'
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.