Question
List - I shows various isotopes and List - II indicates their half-lives.
Match List - I with List - II.
List - I List - II A. ${ }^{3}\text{H}$ I. 60 days B. ${ }^{14}\text{C}$ II. 14.5 days C. ${ }^{32}\text{P}$ III. 5700 years D. ${ }^{125}\text{I}$ IV. 12.2 years
Choose the correct answer from the options given below :
This question was previously asked in
CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
A-IV, B-III, C-II, D-I
Matching Isotopes and Half-Lives
This question requires matching specific isotopes listed in List-I with their corresponding half-lives presented in List-II. The half-life is the time required for a radioactive substance to decay to half of its initial amount.
Isotope Half-Life Identification
We need to identify the common half-lives for the given isotopes:
- A. ${ }^{3}\text{H}$ (Tritium): The commonly accepted half-life for Tritium is approximately 12.3 years. This corresponds to option IV.
- B. ${ }^{14}\text{C}$ (Carbon-14): Carbon-14 is well-known for its use in radiocarbon dating. Its half-life is approximately 5730 years. This matches option III.
- C. ${ }^{32}\text{P}$ (Phosphorus-32): Phosphorus-32 is a beta emitter often used in biological research. Its half-life is about 14.3 days. This corresponds to option II.
- D. ${ }^{125}\text{I}$ (Iodine-125): Iodine-125 is used in medical applications like brachytherapy. Its half-life is approximately 59.4 days. This matches option I.
Final Match Confirmation
Based on the standard half-lives:
- A matches with IV (12.2 years)
- B matches with III (5700 years)
- C matches with II (14.5 days)
- D matches with I (60 days)
Therefore, the correct combination is A-IV, B-III, C-II, D-I.
| Isotope | Half-life (Approx.) | List-II Match |
| ${ }^{3}\text{H}$ | 12.3 years | IV |
| ${ }^{14}\text{C}$ | 5730 years | III |
| ${ }^{32}\text{P}$ | 14.3 days | II |
| ${ }^{125}\text{I}$ | 59.4 days | I |
The correct option reflecting this match is Option B.
Was this answer helpful?
Similar Questions
- Primary changes in Acid Base disorders are :
A. Metabolic acidosis decreased plasma bicarbonate
B. Metabolic alkaloses decreased plasma bicarbonate
C. Respiratory alkalosis decreased $pco_{2}$
D. Respiratory acidosis decreased $pco_{2}$
Choose the correct answer from the options given below : - Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : A covlent single bonds in biological molecules have energies similar to the energy of the C-C bond in ethane.
Reason (R) : It is because less electrons are shared between atoms in double bonds they require more energy to break than single bonds.
In the light of the above statements, choose the most appropriate answer from the options given below : - A solution is called hypertonic when :
- Based on the position of Centromere Chromosome can be divided into 4 types :
A. Meta centric : Centromere in the middle
B. Submetacentric : Centromere at the end
C. Telocentric : Terminal Centromere
D. Acrocentric : Centromere is close to middle
Choose the correct answer from the options given below : - Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Neurons are the functional cells in brain. Glial cells are the supporting cells of the brain.
Reason (R) : Astroglia are starshaped neuronal cells.
In the light of the above statements, choose the most appropriate answer from the options given below : - Which of the following are the correct components of PCR reation ?
A. Taq Polymerase
B. Buffer (5X)
C. Primers (F and R)
D. NTPs
E. $\\text{H}_{2}\\text{O}$
Choose the correct answer from the options given below : - List the proteins detection techniques in increasing order of sensitivity :
A. Bradford
B. Biuret
C. Lowry
Choose the correct answer from the options given below : - Match List - I with List - II.
List - I List - II A. ELISA I. Visualization of cells B. RIA II. Proteins identification C. Centrifugation III. Hormone detection D. Microscopy IV. Isolation of organelles
Choose the correct answer from the options given below : - Match List - I with List - II.
List - I List - II A. SDS-PAGE I. DNA B. Agarose gel electrophoresies II. Liquid chromatography C. Native Page III. Non-denatured proteins D. HPLC IV. proteins
Choose the correct answer from the options given below : How many cycles of $\beta$-oxidation are required for the complete oxidation of activated Oleic acid, 18 : 1 ($\Delta^{9}$)?
Important Questions from Mixed Topic (CUET PG)
- Kalpsutra, the illustrated canonical text is from:-
- The Harappan city almost exclusively devoted to craft production was-:
- Mohandas Karamchand Gandhi launched quit India movement after the failure of:-
- The "Objectives Resolution" was introduced in constituent assembly by:-
- Who among the following was not a member of the constituent assembly:-
Need Expert Advice?
Upcoming Exams
GATE
February 06, 2027
Test Series
CUET
CUET PG Psychology (HUQP20) 2026 Mock Test Series
10 Tests
781 Attempts
3.7(15)
English
More Questions from CUET PG
