Assertion (A) : Total fertility rate (TFR) represents the average number of children, a women would have if she were to pass through her reproductive years bearing children at the same rate as the women now in each age group.
Reason (R) : TFR in rural areas has declined form 5.4 in 1970 to 2.2 in 2020, whereas the corresponding decline in certain areas is from 4.1 to 1.6.
In the light of the above statements, choose the most appropriate answer from the options given below :
Assertion (A) Correctness Analysis
Statement (A) correctly defines the Total Fertility Rate (TFR). TFR is a measure representing the average number of children a woman is expected to have in her lifetime if the current age-specific fertility rates persist throughout her reproductive period.
- Key Term: Total Fertility Rate (TFR)
- Definition Accuracy: The statement provides a standard and accurate definition of TFR.
Reason (R) Correctness Analysis
Statement (R) presents specific data regarding the decline in TFR in rural and certain other areas over a period (1970-2020). While the exact figures require specific data sources, they illustrate a significant demographic trend of declining fertility rates.
- Key Terms: TFR decline, rural areas, certain areas
- Data Representation: The statement reflects the general pattern of decreasing TFR observed globally and in many specific regions over recent decades.
Relationship Between Assertion (A) and Reason (R)
Both statements (A) and (R) are factually correct based on demographic principles and observed trends.
- Statement (A) is a definition.
- Statement (R) provides examples of TFR changes over time.
However, the data presented in Reason (R) (specific TFR values and their changes) does not serve as an explanation for *what* TFR is or *how* it is defined. Reason (R) illustrates the *application* or *consequence* of TFR trends, rather than explaining the concept itself as defined in Assertion (A).
Therefore, while both are correct, Reason (R) is not the correct explanation of Assertion (A).
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Important Questions from Miscellaneous
- Which of the following relationships is/are not true?
(A). Most probable velocity = $\sqrt{\frac{2RT}{M}}$
(B). PV = $\frac{3}{2}kT$
(C). Compressibility factor Z = $\frac{pV}{nRT}$
(D). Average kinetic energy of gas = $\frac{1}{2}kT$
Choose the correct answer from the options given below - Match List-I with List-II
List-I List-II Electronic Configuration First Ionisation energy (kJ mol$^{-1}$) (A). ns$^2$ (I). 2100 (B). ns$^2$np$^1$ (II). 1400 (C). ns$^2$np$^3$ (III). 800 (D). ns$^2$np$^6$ (IV). 900
Choose the correct answer from the options given below: - The shielding constant of a 2p electron (calculated using Slater's rules) is
- Match List-I with List-II
List-I List-II Spectroscopy Property (A). Raman (I). Polarizability (B). FTIR (II). Dipole Moment (C). UV-Visible (III). Absorbance (D). NMR (IV). Spin
Choose the correct answer from the options given below: - The structure of protein comprises of:
(A). Primary structure of protein is associated with amino acids
(B). Secondary structure of protein is associated to peptides
(C). Tertiary structure of protein is associated with polypeptide chains
(D). Quaternary structure of protein is associated with polypeptide chains
Choose the correct answer from the options given below:
