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How are substituents commonly indicated in common names of ketones?
The locations of substituents in common names of ketones are indicated by Greek letters, $\alpha, \alpha', \beta, \beta'$ and so on beginning with the carbon atoms next to the carbonyl group, indicated as $\alpha\alpha'$. (NCERT, p. 229)
What is the common name for $HCHO$?
Table 8.1 explicitly states that the common name for HCHO is Formaldehyde. (NCERT, p. 230)
Consider compounds with an aldehyde group attached to a benzene ring. If it is m-bromobenzaldehyde, what is its IUPAC name?
The example given in the text states that m-Bromobenzaldehyde has the IUPAC name 3-Bromobenzaldehyde (or 3-Bromobenzenecarbaldehyde). (NCERT, p. 230)
When naming ketones using IUPAC rules, how is the numbering of the carbon chain determined?
In case of ketones, the numbering begins from the end nearer to the carbonyl group. (NCERT, p. 229)
Which of the following conditions must be met for resonance to occur in a series LCR circuit?
According to the NCERT text, 'In a RLC circuit, resonance phenomenon occur when $X_L = X_C$ or $\omega_0 = 1/\sqrt{LC}$. For resonance to occur, the presence of both L and C elements in the circuit is a must.'
At resonance in a series LCR circuit, what is the relationship between the voltages across the inductor (L) and the capacitor (C)?
The NCERT text states, 'It is important to note that resonance phenomenon is exhibited by a circuit only if both L and C are present in the circuit. Only then do the voltages across L and C cancel each other (both being out of phase).'
What is the primary characteristic of the current amplitude at the resonant frequency in a series LCR circuit?
The context mentions, 'At resonant frequency, the current amplitude is maximum; $i_m = v_m/R$.'
Which of the following circuits CANNOT exhibit resonance?
The NCERT text clearly states, 'This means that we cannot have resonance in a RL or RC circuit.' This is because for resonance, both L and C must be present.
The resonant frequency ($\omega_0$) of a series LCR circuit is given by:
The formula for resonant frequency is given as '$\omega_0 = 1/\sqrt{LC}$' when $X_L = X_C$ or $\omega L = 1/\omega C$.
If the inductive reactance ($X_L$) is greater than the capacitive reactance ($X_C$) in a series LCR circuit, the circuit is said to be predominantly:
The text states, 'If $X_C < X_L$, $\phi$ is negative and the circuit is predominantly inductive. Consequently, the current in the circuit lags the source voltage.'
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.