Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which of the following are methods of respiration found in amphibians?
The text mentions: 'Respiration is by gills, lungs and through skin' for Amphibia.
Which of the following sets correctly represents examples of Amphibia given in the NCERT text?
The examples listed for Amphibia are: 'Bufo (Toad), Rana (Frog), Hyla (Tree frog), Salamandra (Salamander), Ichthyophis (Limbless amphibia).'
Amphibians are described as oviparous. What does this term signify?
Oviparous means egg-laying. The text states: 'They are oviparous and development is indirect.'
The evolutionary history describes amphibians as the first vertebrates that:
The evolution context mentions: 'first amphibians that lived on both land and water.'
Which of the following is an example of a limbless amphibian?
The NCERT text lists 'Ichthyophis (Limbless amphibia)' as an example.
Kirchhoff's junction rule is a direct consequence of the conservation of which physical quantity?
According to the provided text, 'Kirchhoff’s junction rule is based on conservation of charge and the outgoing currents add up and are equal to incoming current at a junction.' This highlights that the rule, stating the sum of currents entering a junction equals the sum of currents leaving it, is fundamentally about charge not accumulating at any point, hence conservation of charge.
Which of Kirchhoff's rules states that the algebraic sum of changes in potential around any closed loop must be zero?
The NCERT text explicitly states, '(b) Loop rule: The algebraic sum of changes in potential around any closed loop involving resistors and cells in the loop is zero'. This rule is a direct application of the conservation of energy, as potential difference is related to work done per unit charge.
When labelling a directed arrow for current 'I' in a resistor, if 'I' is determined to be negative after calculation, what does it signify?
The text explains: 'If ultimately I is determined to be positive, the actual current in the resistor is in the direction of the arrow. If I turns out to be negative, the current actually flows in a direction opposite to the arrow.'
For a cell with emf $e$ and internal resistance $r$, if the current $I$ flows from the negative terminal (N) to the positive terminal (P) through the cell, what is the potential difference $V = V(P) - V(N)$?
The context states, 'V = V(P) – V(N) = e – I r [Eq. (3.38) between the positive terminal P and the negative terminal N; I here is the current flowing from N to P through the cell].'
In the analysis of electric circuits using Kirchhoff's rules, when is it stated that there is no accumulation of charges at any junction or point?
The NCERT text clarifies: 'The proof of this rule [Junction Rule] follows from the fact that when currents are steady, there is no accumulation of charges at any junction or at any point in a line.'
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.