Category: TNPSC Grp IV Title: Day 02 Daily Practice – 15 Questions on Tamil Consonant Groups, Indian Constitution, HCF and LCM Suggested time: 15 minutes | UNIQUE headline questions: 15 (8 General Tamil + 5 General Studies + 2 Aptitude)
Today's lessons: Morning – வல்லினம், மெல்லினம், இடையினம்; afternoon – Making of the Indian Constitution, Preamble and salient features; evening – Highest Common Factor (HCF) and Least Common Multiple (LCM). Attempt all 15 questions before checking the answer key. The eight Tamil-language questions are intentionally kept in Tamil, with simple English explanations below.
SECTION A – GENERAL TAMIL (Q01–Q08): ORIGINAL TAMIL WORDING PRESERVED
Q01 [Original model] 'க்' எந்த வகை மெய்யெழுத்து? A) வல்லினம் B) மெல்லினம் C) இடையினம் D) ஆய்தம்
Q02 [Original model] கீழ்க்கண்டவற்றில் மெல்லின எழுத்து எது? A) ற் B) ங் C) ர் D) ழ்
Q03 [Original model] 'ழ்' எந்த வகை மெய்யெழுத்து? A) வல்லினம் B) மெல்லினம் C) இடையினம் D) உயிரெழுத்து
Q04 [Original model] 'ற்' மற்றும் 'ர்' ஆகியவற்றின் வகைகள் முறையே என்ன? A) இடையினம், வல்லினம் B) வல்லினம், இடையினம் C) மெல்லினம், இடையினம் D) இரண்டும் வல்லினம்
Q05 [Original model] தமிழ் மெய்யெழுத்துகள் மொத்தம் எத்தனை? A) 12 B) 18 C) 216 D) 247
Q06 [Original model] 'ச்' எழுத்தின் இன மெல்லின எழுத்து எது? A) ங் B) ஞ் C) ண் D) ம்
Q07 [Original model] கீழ்க்கண்ட எந்தத் தொகுதியில் உள்ள மூன்றும் மெல்லின எழுத்துகள்? A) ந், ண், ன் B) ர், ற், ல் C) க், ச், ட் D) ய், வ், ழ்
Q08 [Original model] மெய்யெழுத்தின் இயல்பான ஒலி அளவு என்ன? A) ஒரு மாத்திரை B) இரண்டு மாத்திரைகள் C) அரை மாத்திரை D) மூன்று மாத்திரைகள்
SECTION B – GENERAL STUDIES: INDIAN CONSTITUTION (Q09–Q13)
Q09 [TNPSC Group IV, 6 November 2016, General Studies Q118, printed page 35; final-key version mapping pending] Who chaired the Drafting Committee of the Indian Constitution? A) Dr Rajendra Prasad B) Jawaharlal Nehru C) Dr B. R. Ambedkar D) Mahatma Gandhi
Q10 [Original model] When did the Constituent Assembly first meet? A) 9 December 1946 B) 15 August 1947 C) 26 November 1949 D) 26 January 1950
Q11 [Original model] On which date was the Indian Constitution adopted? A) 26 January 1930 B) 26 November 1949 C) 15 August 1947 D) 26 January 1950
Q12 [Original model] Which amendment inserted 'Socialist' and 'Secular' into the Preamble? A) 44th Amendment B) 61st Amendment C) 73rd Amendment D) 42nd Amendment
Q13 [Original model] What does 'Fraternity' in the Preamble seek to ensure? A) Hereditary government B) Dignity of the individual and unity and integrity of the nation C) Separate state citizenship D) An official state religion
SECTION C – APTITUDE: HCF AND LCM (Q14–Q15)
Q14 [Original model] What is the HCF of 60 and 90? A) 15 B) 20 C) 30 D) 180
Q15 [Original model] What is the LCM of 8, 12 and 18? A) 36 B) 48 C) 72 D) 144
=== ANSWER KEY AND EXPLANATIONS === Q01 – A. க் belongs to வல்லினம் (hard consonants): க், ச், ட், த், ப், ற். Q02 – B. ங் is மெல்லினம் (soft/nasal group). ற் is வல்லினம்; ர் and ழ் are இடையினம். Q03 – C. ழ் belongs to இடையினம் (intermediate consonants): ய், ர், ல், வ், ழ், ள். Q04 – B. ற் is வல்லினம், while ர் is இடையினம். Their categories are different. Q05 – B. Tamil has 18 consonants: six in each of the three groups. Q06 – B. The paired soft consonant corresponding to ச் is ஞ். Q07 – A. ந், ண் and ன் are all மெல்லினம் consonants. Q08 – C. A consonant has a natural duration of half a māttirai (metrical time unit). Q09 – C. Dr B. R. Ambedkar chaired the Drafting Committee formed on 29 August 1947. The 2016 Group IV question text and number were checked in the supplied paper; exact version-to-official-final-key mapping is still pending. Q10 – A. The Constituent Assembly first met on 9 December 1946. Q11 – B. It was adopted on 26 November 1949. Most provisions came into force on 26 January 1950. Q12 – D. The 42nd Amendment of 1976 added 'Socialist' and 'Secular' to the Preamble. Q13 – B. Fraternity seeks individual dignity and the unity and integrity of the nation. Q14 – C. 60 = 2²×3×5 and 90 = 2×3²×5. Use the lowest common powers: 2×3×5 = 30. Q15 – C. 8 = 2³, 12 = 2²×3, and 18 = 2×3². Use the highest powers: 2³×3² = 72.
Self-assessment: 13–15 Excellent | 10–12 Good | 7–9 Revise weak areas | 0–6 Review the basics.
=== COMPLETE BOOK-BACK CHAPTER PRACTICE – ADDITIONAL ITEMS, PROVISIONAL BATCH 1/? === Reference: Tamil Nadu Class 6 Mathematics, Term 2, Chapter 1 'Numbers', Exercise 1.2. SOURCE INTEGRITY: B01–B10 correspond to items identified as Exercise 1.2 Questions 1(i–v) and 2(i–v) in two independent textbook solution guides. Their mathematical answers have been checked, but the original government textbook and 2026–27 edition have NOT been directly verified. These are paraphrased, guide-matched PROVISIONAL practice items, NOT counted as verified original book-back questions and NOT part of the 15 headline MCQs.
B01 [Provisional] Find HCF(45, 75). Answer: 15. Explanation: 45=3²×5; 75=3×5²; HCF=3×5. B02 [Provisional] What is the HCF of two consecutive even numbers? Answer: 2. Explanation: Both are even and differ by 2. B03 [Provisional] Find HCF(3, 9). Answer: 3. Explanation: 3 divides 9 exactly. B04 [Provisional] Find LCM(26, 39, 52). Answer: 156. Explanation: 26=2×13, 39=3×13, 52=2²×13; LCM=2²×3×13. B05 [Provisional] What smallest positive number must be added to 57 to obtain a number divisible by 2, 3, 4 and 5? Answer: 3. Explanation: LCM=60; 60−57=3. B06 [Provisional] Are 57 and 69 co-prime? Answer: No. Explanation: Both are divisible by 3. B07 [Provisional] Is HCF(17,18)=1? Answer: True. Explanation: Consecutive integers are co-prime. B08 [Provisional] Is the LCM of two consecutive positive integers their product? Answer: True. Explanation: Their HCF is 1. B09 [Provisional] Is the LCM of two co-prime numbers their sum? Answer: False. Explanation: Their LCM is their product. B10 [Provisional] Does the HCF of two positive integers divide their LCM? Answer: Yes. Explanation: The HCF divides both numbers, and the LCM is a multiple of both.
Book-back tracking: 10 items located in guides; 10 answers independently checked; 0 verified against original government edition; full exercise item count still unverified. Original edition checks for General Tamil and Class 10 Civics book-back remain pending. These provisional items can be used in later spaced revision but are not counted as verified completion.
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