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Friday, 9 October

JEE Main 2025 · ChemistryMultiple choiceOtherMediumConceptual

JEE Main 3 April 2025, Shift 1, Chemistry Q60

Question 60 of 75 in this shift, Chemistry question 10 of 25, Section A.

Which of the following statements are correct ? A. The process of adding an electron to a neutral gaseous atom is always exothermic. B. The process of removing an electron from an isolated gaseous atom is always endothermic. C. The 1st1^{\mathrm{st}} ionization energy of boron is less than that of beryllium. D. The electronegativity of C is 2.5 in CH4\mathrm{CH_4} and CCl4\mathrm{CCl_4} E. Li is the most electropositive among elements of group I. Choose the correct answer from the options given below:
  1. (1)B, C and E Only
  2. (2)B and C OnlyOfficial answer
  3. (3)B and D Only
  4. (4)A, C and D Only

Official answer

Option 2

NTA final key.

Chapter
Classification of Elements and Periodicity in Properties
Topic
Periodic Trends
Idea tested
Ionization Enthalpy Trends

Same idea in other shifts

Asked 7× in all
  1. 2 Apr 2026, Shift 2 · Q59Given below are two statements: Statement I: The second ionization enthalpy of B, Al and Ga is in the order of B > Al > Ga. Statement II:…MediumSingle correct
  2. 6 Apr 2026, Shift 1 · Q71First and second ionization enthalpies of lithium are 520 kJ mol−1^{-1} and 7297 kJ mol−1^{-1} respectively. Energy required to convert…EasyNumerical value
  3. 6 Apr 2026, Shift 2 · Q58In a period, the first ionisation enthalpy of the element at extreme left and the negative electron gain enthalpy of the extreme right…EasySingle correct
  4. 8 Apr 2026, Shift 2 · Q58Match List - I with List - II. List - I (Electronic configuration of neutral atom (where n = 2)) | List - II (1st^{st} Ionization Energy…MediumMatch the list
  5. 8 Apr 2025, Shift 2 · Q56The atomic number of the element from the following with lowest 1st^{st} ionisation enthalpy is :EasySingle correct
  6. 29 Jan 2024, Shift 1 · Q64Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : The first ionisation…EasyAssertion–reason

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.