ETN NEWS | TNPSC Grp IV | DAY 16/90 | DAILY PRACTICE Date: Wednesday, 28 October 2026 | 19:00 IST Category: TNPSC Grp IV Headline practice: EXACTLY 15 unique MCQs (8 Tamil + 5 General Studies + 2 Aptitude) Source class for all 15 headline questions: ORIGINAL MODEL QUESTION (not TNPSC PYQ) Supplement: Class 7 Maths, Term III, Chapter 2, Exercise 2.4 — 11 textbook questions, verified in GOVERNMENT OF TAMIL NADU revised 2022 edition, not yet checked against 2026–27 edition. Publication: Prepared for ETN editorial review; NOT posted to ETN and no push notification sent.
# PART 2 — COMPLETE ENGLISH-SUPPORTED PRACTICE
# Day 16 | Exactly 15 Unique Headline MCQs
## Important grammar correction to the 08:00 lesson In the older Class 9 Tamil Lesson 1.5 framework, thanvinai, piravinai and kāraṇavinai are distinct: a ball rolls by itself (thanvinai); a boy rolls the ball (piravinai); a boy causes someone else to roll the ball (kāraṇavinai). The morning lesson's example “ஆசிரியர் மாணவனைப் படிக்க வைத்தார்” describes a causative action and should not be labelled ordinary piravinai. The 2026–27 original textbook has not been directly checked.
## General Tamil — retain Tamil wording (8)
**T01. “பந்து உருண்டது” என்ற தொடர் எந்த வகை?** (Tamil grammar question retained verbatim; English explanation is given in the answer key.) A) தன்வினை B) பிறவினை C) காரணவினை D) செயப்பாட்டு வினை
**T02. “சிறுவன் பந்தை உருட்டினான்” என்ற தொடர் எந்த வகை?** (Tamil grammar question retained verbatim; English explanation is given in the answer key.) A) தன்வினை B) பிறவினை C) காரணவினை D) விளித்தொடர்
**T03. “சிறுவன் பந்தை உருட்ட வைத்தான்” என்ற தொடர் எந்த வகை?** (Tamil grammar question retained verbatim; English explanation is given in the answer key.) A) தன்வினை B) பிறவினை C) காரணவினை D) பெயர்த்தொடர்
**T04. “மரம் வளர்ந்தது” என்பதற்குப் பொருத்தமான பிறவினைத் தொடர் எது?** (Tamil grammar question retained verbatim; English explanation is given in the answer key.) A) மரம் வளர்கிறது B) மரம் வளர்ந்திருந்தது C) மரம் வளருமா? D) விவசாயி மரத்தை வளர்த்தார்
**T05. “கூட்டம் நடந்தது” என்ற தன்வினைக்குப் பொருத்தமான பிறவினை எது?** (Tamil grammar question retained verbatim; English explanation is given in the answer key.) A) கூட்டம் நடந்திருக்கலாம் B) தலைவர் கூட்டத்தை நடத்தினார் C) கூட்டம் நடக்கிறது D) கூட்டம் நடக்கும்
**T06. “ஆசிரியர் மாணவனைப் படிக்க வைத்தார்” என்ற தொடரில் “படிக்க வைத்தார்” உணர்த்துவது எது?** (Tamil grammar question retained verbatim; English explanation is given in the answer key.) A) தன்வினை B) செயப்பாட்டு வினை C) காரணவினை D) இரட்டைக்கிளவி
**T07. “குழந்தை எழுந்தது” என்ற தன்வினையின் பொருத்தமான பிறவினை வடிவம் எது?** (Tamil grammar question retained verbatim; English explanation is given in the answer key.) A) தாய் குழந்தையை எழுப்பினாள் B) குழந்தை எழுந்துகொண்டது C) குழந்தை எழுந்திருக்கும் D) குழந்தை எழுந்ததா?
**T08. தன்வினை → பிறவினை → காரணவினை என்ற சரியான வரிசை எது?** (Tamil grammar question retained verbatim; English explanation is given in the answer key.) A) பந்தை உருட்டினான் → பந்து உருண்டது → உருட்ட வைத்தான் B) உருட்ட வைத்தான் → பந்தை உருட்டினான் → பந்து உருண்டது C) பந்து உருண்டது → உருட்ட வைத்தான் → பந்தை உருட்டினான் D) பந்து உருண்டது → பந்தை உருட்டினான் → பந்தை உருட்ட வைத்தான்
## General Studies — Money, Credit and RBI (5)
**G09. On which date did the Reserve Bank of India (RBI) begin operations?** A) 1 April 1935 B) 15 August 1947 C) 1 January 1949 D) 26 January 1950
**G10. In which year was the Reserve Bank of India nationalised?** A) 1934 B) 1949 C) 1956 D) 1969
**G11. Who issues the ₹1 currency note in India?** A) Reserve Bank of India B) State Bank of India C) Government of India D) NABARD
**G12. What does CRR (Cash Reserve Ratio) refer to?** A) The gold ratio banks must hold B) The annual government tax rate C) Banks’ profit-sharing ratio D) The prescribed cash reserve banks maintain with RBI
**G13. How many members are there in India’s Monetary Policy Committee (MPC)?** A) 4 B) 6 C) 8 D) 10
## Aptitude — Simple Interest (2)
**A14. Find the simple interest on ₹12,000 at 8% per annum for 3 years.** A) ₹2,400 B) ₹2,600 C) ₹2,880 D) ₹3,200
**A15. How long will ₹8,000 take to become ₹9,200 at 10% simple interest per annum?** A) 1 year B) 1½ years C) 2 years D) 3 years
## Complete Answer Key with English Explanations
**T01 — A) தன்வினை** Explanation: The ball itself rolls; the action concerns the subject. This is thanvinai (intransitive/self-directed verb).
**T02 — B) பிறவினை** Explanation: The boy rolls the ball; the action acts on the object, so it is piravinai (transitive verb).
**T03 — C) காரணவினை** Explanation: The boy causes someone else to roll the ball. The causative auxiliary வைத்தான் marks kāraṇavinai, not ordinary piravinai.
**T04 — D) விவசாயி மரத்தை வளர்த்தார்** Explanation: The tree grew (thanvinai); the farmer grew/cultivated the tree (piravinai), with the tree as object.
**T05 — B) தலைவர் கூட்டத்தை நடத்தினார்** Explanation: நட (take place) changes to நடத்து (conduct); the leader conducts the meeting, making it piravinai.
**T06 — C) காரணவினை** Explanation: The teacher makes the student study. Causing another person to act is kāraṇavinai (causative), distinct from ordinary piravinai.
**T07 — A) தாய் குழந்தையை எழுப்பினாள்** Explanation: எழு means to rise; எழுப்பு means to raise/wake someone. The action affects the child, so it is piravinai.
**T08 — D) பந்து உருண்டது → பந்தை உருட்டினான் → பந்தை உருட்ட வைத்தான்** Explanation: The order is: ball rolled (thanvinai), someone rolled the ball (piravinai), someone made another roll it (kāraṇavinai).
**G09 — A) 1 April 1935** Explanation: RBI commenced operations on 1 April 1935 under the Reserve Bank of India Act, 1934.
**G10 — B) 1949** Explanation: RBI was nationalised with effect from 1 January 1949. Do not confuse this with the 1969 bank nationalisations.
**G11 — C) Government of India** Explanation: The ₹1 note is issued by the Government of India; RBI issues other Indian banknotes.
**G12 — D) The prescribed cash reserve banks maintain with RBI** Explanation: CRR is the prescribed cash balance that banks must maintain with RBI against relevant deposit liabilities.
**G13 — B) 6** Explanation: India’s MPC has six members and is chaired by the RBI Governor.
**A14 — C) ₹2,880** Explanation: Simple interest = P × R × T / 100 = 12,000 × 8 × 3 / 100 = ₹2,880.
**A15 — B) 1½ years** Explanation: Interest = 9,200 − 8,000 = ₹1,200. Time = 100I/(PR) = 120,000/80,000 = 1.5 years.
## Complete book-back chapter practice—additional verified questions (batch 1/2) **English version:** Class 7 Mathematics, Term III, Chapter 2, Exercise 2.4. All 11 questions checked against the Government of Tamil Nadu 2022 revised textbook and its own answer key. Questions are paraphrased; the 2026–27 edition has not been compared.
**BB-Q1 — 7th Maths, Term III, Ch.2, Exercise 2.4 Q1** [2022 edition textbook-verified; paraphrased] For ₹35,000 at 9% p.a. over 2 years, find simple interest. Answer: ₹6,300 Working: 35,000 × 9 × 2 / 100 = 6,300.
**BB-Q2 — 7th Maths, Term III, Ch.2, Exercise 2.4 Q2** [2022 edition textbook-verified; paraphrased] For a ₹8,000 loan at 7% p.a. for 2 years, find interest and total amount. Answer: வட்டி ₹1,120; மொத்தம் ₹9,120 / Interest ₹1,120; Amount ₹9,120 Working: 8,000 × 7 × 2 / 100 = 1,120; 8,000 + 1,120 = 9,120.
**BB-Q3 — 7th Maths, Term III, Ch.2, Exercise 2.4 Q3** [2022 edition textbook-verified; paraphrased] If interest is ₹21,280 at 9.5% for 4 years, find the principal. Answer: ₹56,000 Working: P = 21,280 × 100 / (9.5 × 4) = 56,000.
**BB-Q4 — 7th Maths, Term III, Ch.2, Exercise 2.4 Q4** [2022 edition textbook-verified; paraphrased] ₹8,500 grows to ₹11,050 in 3 years. Find the annual simple-interest rate. Answer: 10% Working: I = 11,050 − 8,500 = 2,550; R = 2,550 × 100/(8,500 × 3) = 10%.
**BB-Q5 — 7th Maths, Term III, Ch.2, Exercise 2.4 Q5** [2022 edition textbook-verified; paraphrased] How many years for ₹16,500 to reach ₹22,935 at 13% simple interest? Answer: 3 ஆண்டுகள் / 3 years Working: I = 22,935 − 16,500 = 6,435; T = 6,435 × 100/(16,500 × 13) = 3.
**BB-Q6 — 7th Maths, Term III, Ch.2, Exercise 2.4 Q6** [2022 edition textbook-verified; paraphrased] How many years for ₹17,800 to reach ₹19,936 at 6% simple interest? Answer: 2 ஆண்டுகள் / 2 years Working: I = 19,936 − 17,800 = 2,136; T = 2,136 × 100/(17,800 × 6) = 2.
**BB-Q7 — 7th Maths, Term III, Ch.2, Exercise 2.4 Q7** [2022 edition textbook-verified; paraphrased] ₹48,000 becomes ₹55,560 in 2 years 3 months. Find the annual simple-interest rate. Answer: 7% Working: I = 7,560; T = 2.25; R = 7,560 × 100/(48,000 × 2.25) = 7%.
**BB-Q8 — 7th Maths, Term III, Ch.2, Exercise 2.4 Q8** [2022 edition textbook-verified; paraphrased] If the amount is ₹17,000 after 3 years at 12% simple interest, find principal. Answer: ₹12,500 Working: A = P(1+0.12×3)=1.36P; P = 17,000/1.36 = 12,500.
**BB-Q9 — 7th Maths, Term III, Ch.2, Exercise 2.4 Q9** [2022 edition textbook-verified; paraphrased] Principal ₹4,500; amount ₹5,000. Find the interest. A) ₹500 B) ₹200 C) 20% D) 15% Answer: ₹500 Working: I = 5,000 − 4,500 = ₹500.
**BB-Q10 — 7th Maths, Term III, Ch.2, Exercise 2.4 Q10** [2022 edition textbook-verified; paraphrased] Find one-year simple interest on ₹1,000 at 10% p.a. A) ₹200 B) ₹10 C) ₹100 D) ₹1,000 Answer: ₹100 Working: I = 1,000 × 10 × 1/100 = ₹100.
**BB-Q11 — 7th Maths, Term III, Ch.2, Exercise 2.4 Q11** [2022 edition textbook-verified; paraphrased] ₹2,000 earns ₹200 simple interest in one year. Find the rate. A) 10% B) 20% C) 5% D) 15% Answer: 10% Working: R = 200 × 100/(2,000 × 1) = 10%.
