Post-1947 India (Policies & Developments)

Introduction

The sub-topic Post-1947 India (Policies & Developments) occupies a critical space in the RPSC History syllabus, bridging the final phase of the freedom struggle with the nation-building efforts of independent India. While the syllabus formally lists “History – India and Freedom Struggle” and “History, Art, Culture and Heritage – Rajasthan,” the examination has consistently tested aspirants on the concrete policy actions, institutional creations, and territorial integration that shaped the republic immediately after 1947 and in the subsequent decades. The three Previous Year Questions (PYQs) provided span 2018, 2021, and 2023, revealing a clear pattern: RPSC values factual precision on specific dates, locations, and membership lists, and it increasingly uses code‑based matching questions to test interconnected knowledge.

In the 2018 question, the formation of the Rajasthan Union on 25 March 1948 was tested by asking which princely state was not a member — a straightforward recall item that rewards careful study of the sequence of integration. The 2021 question delved into the establishment of the Central Electrochemical Research Institute (CECRI) at Karaikudi in 1953, linking the roles of Alagappa Chettiar, Dr Shanti Swaroop Bhatnagar, and Pt. Jawaharlal Nehru. This demonstrates that the examiner does not shy away from regional scientific institutions that have a direct connection to national policy (the industrial‑scientific thrust of the Nehru era). The 2023 code‑based question (whose exact statements are not reproduced here but whose correct answer was a combination of statements ii, iii, and iv) indicates that RPSC now expects aspirants to handle multiple‑choice combinations — a format that tests depth across several related facts simultaneously, often about the same policy domain (e.g., integration stages, constitutional provisions, or economic planning milestones).

Why this sub‑topic matters for RPSC

• It is a high‑yield area: three questions have appeared across the three papers we have, and the syllabus explicitly covers “Post‑1947 India (Policies & Developments)” under the broader History head.
• The questions are predominantly factual (dates, names, membership), but the 2023 code question suggests a shift towards analytical‑combinatorial skills.
• An aspirant who masters the timeline of integration of Rajasthan’s princely states, the creation of scientific and industrial infrastructure, and the early economic/planning frameworks will cover the tested ground and be prepared for lateral expansions.

What the student will learn in this chapter

• The exact chronology of the unification of Rajasthan (from Matsya Union to the present state).
• The policy of scientific‑industrial institution‑building under Nehru, with specific examples like CECRI.
• The broader context of economic planning (Five‑Year Plans), the Industrial Policy Resolutions, and the role of the Planning Commission.
• How to tackle code‑based matching questions by building mental checklists and avoiding false associations.
• The common traps that lead to wrong answers — such as confusing the dates of Rajasthan Union vs. Greater Rajasthan, or misplacing scientific labs.

These notes are written as a self‑contained textbook chapter. Every key term is defined at first use, comparisons are presented in tables, and memory aids are interspersed to help lock facts into long‑term recall. By the end, you will not only be able to answer the three PYQs accurately but also anticipate what RPSC might ask next.

Core Concepts & Foundations

To navigate Post‑1947 India policies, you must first internalise the foundational vocabulary and conceptual frameworks that underpin every development. Below are the essential terms, each defined in a blockquote. These are not merely definitions but the building blocks you will revisit in every deep‑dive section.

Integration of Princely States: The political process by which the 565+ princely states that existed under British paramountcy were merged into the Dominion of India between 1947 and 1950. Sardar Vallabhbhai Patel, as Deputy Prime Minister and Home Minister, oversaw this through Instruments of Accession, merger agreements, and police action where necessary. Rajasthan’s integration was a distinct sub‑process involving seven stages.

Rajasthan Union (1948): The first unified political entity formed on 25 March 1948 by merging four princely states – Bundi, Udaipur, Shahpura, and Pratapgarh? Wait – the 2018 PYQ specifically tested that Pratapgarh was not part of this Union. The correct composition was Bundi, Udaipur, Shahpura, and Jhalawar (or others – to be clarified in deep‑dive). The term denotes a building‑block of today’s Rajasthan.

Matsya Union (1948): An earlier, separate union formed on 17 March 1948, comprising Alwar, Bharatpur, Dholpur, and Karauli. This was later merged into the larger Rajasthan entity. The word “Matsya” refers to the mythological fish kingdom, chosen by the rulers of these states.

Greater Rajasthan (1949): The enlarged union formed on 30 March 1949 that brought in larger states like Jodhpur, Jaipur, Bikaner, and Jaisalmer, along with the earlier Rajasthan Union. This step created a single unit covering most of present‑day Rajasthan except for a few enclaves.

Central Electrochemical Research Institute (CECRI): A premier research laboratory under the Council of Scientific & Industrial Research (CSIR), established in Karaikudi (Tamil Nadu) in 1953. It specialises in electrochemical science and technology. Its founding was championed by industrialist Alagappa Chettiar and scientist‑administrator Dr Shanti Swaroop Bhatnagar, with the personal backing of Prime Minister Jawaharlal Nehru – a classic example of Nehru’s policy of building a scientific infrastructure for industrial self‑reliance.

Five‑Year Plans: Centralised economic planning frameworks adopted by India from 1951, modelled on the Soviet pattern but adapted to mixed‑economy principles. The Planning Commission (established 1950) drafted these plans, which set targets for agriculture, industry, and social sectors. The First Plan (1951‑56) focused on agriculture; the Second Plan (1956‑61, Nehru‑Mahalanobis model) prioritised heavy industry. This policy framework shaped all developmental decisions in the 1950s‑60s.

Industrial Policy Resolution (1948 & 1956): The foundational documents that defined the role of the state in industry. The 1948 resolution divided industries into four categories: exclusive state monopoly (e.g., arms, atomic energy), state‑owned but with private participation (e.g., coal, iron), private sector with state regulation, and cooperative. The 1956 resolution (under the Second Plan) sharpened the division into three schedules, giving the public sector a commanding role in heavy industries and infrastructure.

Non‑Alignment: The foreign policy doctrine adopted by Nehru, positioning India outside the Cold War blocs. While not a “development” in the domestic sense, non‑alignment influenced resource allocation (defence spending) and international partnerships for technology transfer (e.g., Soviet assistance for steel plants). It is often tested in conjunction with domestic policies.

Sardar Vallabhbhai Patel: The “Iron Man of India” who single‑handedly orchestrated the integration of princely states. For Rajasthan, his intervention was crucial in persuading, cajoling, and pressuring rulers to sign the Instruments of Accession. He is tested indirectly through questions about which ruler or state joined when.

Jawaharlal Nehru’s Scientific Temper: A policy stance that promoted science and technology as instruments of nation‑building. It led to the creation of a chain of CSIR laboratories (including CECRI), the establishment of the Indian Institutes of Technology (IITs), and the atomic energy programme (under Homi Bhabha). CECRI is a direct product of this policy.

These concepts are not isolated; they interlock. For example, the integration of Rajasthan’s princely states was a microcosm of Patel’s overall integration strategy, and the establishment of CECRI reflects Nehru’s scientific industrialisation drive, which was itself funded through the Five‑Year Plans. The following deep‑dive sections will unpack each of these threads.

Integration of Princely States and the Formation of Rajasthan (1947‑1956)

This is the single most tested sub‑topic within Post‑1947 India in the RPSC History paper. The 2018 PYQ directly asked about the composition of the Rajasthan Union of 25 March 1948, and the 2023 code‑based question likely involved multiple statements about the stages of integration. Mastery of this chronology is non‑negotiable.

Background: The Challenge of 565 States

At independence, the British Indian Empire contained 565 princely states, ranging in size from Hyderabad (the size of France) to tiny principalities of a few villages. The Indian Independence Act 1947 left them legally independent, but the accession to either India or Pakistan was a political necessity. Sardar Patel and his secretary V.P. Menon designed a three‑pronged strategy: (a) persuasion through the Instrument of Accession (ceding only defence, foreign affairs, and communications); (b) merger agreements for smaller states to be absorbed into existing provinces; and (c) police action for recalcitrant states (e.g., Junagadh, Hyderabad). Rajasthan’s integration was more layered because of the large number of states and the strategic importance of the region.

The Seven Stages of Rajasthan’s Unification

Rajasthan’s formation was not a single event but a process that unfolded over nearly a decade. The table below summarises the key milestones.

Key fact for PYQ 2018: On 25 March 1948, the states that joined the Rajasthan Union were Bundi, Udaipur, Shahpura, and Jhalawar. Pratapgarh did not join at that stage; it joined only later on 18 April 1948. Therefore, the correct answer to “Which princely state was not a part of the Rajasthan Union formed on 25 March 1948?” is Pratapgarh.

Why This Matters for the Code‑Based Question

The 2023 PYQ (code‑based) likely provided statements such as:

• (i) The Rajasthan Union was formed on 25 March 1948 with Bundi, Udaipur, Shahpura, and Jhalawar.
• (ii) Pratapgarh was a member of the Rajasthan Union from the beginning.
• (iii) The Matsya Union was formed before the Rajasthan Union.
• (iv) Greater Rajasthan was formed on 30 March 1949. If so, the correct statements are (i), (iii), and (iv) – i.e., (ii) is false because Pratapgarh joined later. The answer given as (ii), (iii), (iv) would be opposite. Since the exact statements are not provided, we must teach the correct facts: Pratapgarh joined on 18 April 1948, not on 25 March 1948. Any code‑based question on this theme will test the same distinction. The takeaway is to memorise the sequence of inclusion.

Mnemonic for Rajasthan Integration Stages

“MURP‑GR” Mnemonic
M – Matsya Union (17 Mar 48)
U – Union (Rajasthan Union, 25 Mar 48)
R – Rajasthan Union enlarged (18 Apr 48)
P – Greater Rajasthan (30 Mar 49)
Then GR – Greater Rajasthan + Matsya merged (26 Jan 50) -> State of Rajasthan
Finally – Reorganisation (1 Nov 56) → Modern Rajasthan.
Recall trick: “Matsya Union Really Prepared Greater Rajasthan” – first letters M U R P G R.

Scientific and Industrial Institution‑Building under Nehru: The CECRI Example

The 2021 PYQ on the Central Electrochemical Research Institute is a perfect entry point into Nehru’s policy of building a scientific infrastructure. While the question asked for a single fact (Karaikudi, 1953), the deeper lesson is how such institutions were deliberately planted in different regions to spur industrial development and reduce regional disparities.

The Nehru‑Bhatnagar Vision

Dr Shanti Swaroop Bhatnagar, the first Director‑General of the Council of Scientific & Industrial Research (CSIR), was the architect of a network of national laboratories. Between 1947 and 1956, CSIR established 12 laboratories, including the National Physical Laboratory (Delhi), National Chemical Laboratory (Pune), and Central Food Technological Research Institute (Mysore). The establishment of CECRI in Karaikudi followed a unique public‑private partnership: industrialist Alagappa Chettiar donated land and buildings, while the CSIR provided scientific manpower and funding. Prime Minister Jawaharlal Nehru personally inaugurated the institute, underscoring the importance he placed on electrochemical research for India’s nascent chemical and metallurgical industries.

Why Karaikudi?

Karaikudi is in the Sivaganga district of Tamil Nadu, a region with a strong industrial heritage (Chettiar business community). The choice reflected:

• Decentralisation – not all labs in Delhi/Mumbai.
• Local philanthropy – Alagappa Chettiar offered facilities.
• Strategic need – electrochemistry was essential for the planned heavy industries (e.g., aluminium, fertilisers, batteries).

Other CSIR Labs that Could Be Tested

The same logic can be applied to other institutions. RPSC may ask the location and year of establishment of any of the early CSIR labs, or of other scientific bodies like the Atomic Energy Commission (1948, Bombay) or the Indian Institute of Science (much older, 1909, but its post‑1947 expansion). A comparison table is helpful.

Mnemonic for early CSIR labs: “Nehru’s Scientific Labs: NCCP, CD” – NPL (New Delhi’), NCL (Pune), CECRI (Karaikudi), CFTRI (Mysore), CDRI (Lucknow). You can map each to a city.

Economic Planning and Industrial Policy: The Framework that Made Institutions Possible

CECRI was not an isolated creation – it was funded through the Five‑Year Plans and operated under the Industrial Policy Resolution 1956, which placed heavy and strategically important industries in the public sector. Understanding the planning architecture is necessary to answer any “why” or “how” questions.

The Planning Commission and the First Two Plans

The Planning Commission was set up in March 1950 by a Cabinet resolution (not by the Constitution). It was chaired by the Prime Minister and functioned as a think‑tank that formulated the Five‑Year Plans. The First Plan (1951‑56) was essentially a reconstruction plan, with a focus on agriculture (food self‑sufficiency) and irrigation – the famous Bhakra‑Nangal project was part of it. The Second Plan (1956‑61) adopted the Mahalanobis model, named after statistician P.C. Mahalanobis, which prioritised capital‑goods industries (steel, machinery, chemicals) under state ownership. This directly drove the need for institutes like CECRI (electrochemical expertise for aluminium/fertiliser production), NCL (chemical engineering), etc.

Industrial Policy Resolution 1948 vs 1956

The Economic Consequences for Rajasthan

Rajasthan’s integration and subsequent development were influenced by national planning. For example, the Chambal Valley Project (a multipurpose river valley project) was part of the First Plan. The state’s mineral wealth (zinc, lead, gypsum) attracted public‑sector enterprises like Hindustan Zinc Limited (established 1966, but conceived in earlier plans). The pattern is that RPSC may ask matching questions linking a policy (e.g., Industrial Policy 1956) with its implementation (e.g., establishment of specific public‑sector units in Rajasthan).

Worked Examples & Applications

We now analyse each of the three PYQs in detail. Use the exact format described.

Example 1 — RPSC 2021

Question: When and where was the Central Electrochemical Research Institute established with the efforts of Alagrappa Chettriar, Dr Shanti Swaroop Bhatnagar and Pt. Jawahar Lal Nehru?

Choices students saw:

• Chennai, 1948
• Shivganga, 1953
• Karaikudi, 1953
• Lucknow, 1951

Walkthrough:

1. What the question is testing: Factual recall of a specific scientific institution – its location and year of establishment, and the key personalities involved. It tests the candidate’s knowledge of the Nehru‑Bhatnagar policy of building CSIR laboratories.
2. Why each wrong choice is wrong:
   • Chennai, 1948 – CECRI was not in Chennai; also, 1948 is the year of establishment of the Central Food Technological Research Institute (Mysore) and the Atomic Energy Commission, but not CECRI.
   • Shivganga, 1953 – Shivganga is a nearby district headquarter, but the location is specifically Karaikudi town in Sivaganga district. The choice spells “Shivganga” (likely a typo for Sivaganga) – this distractor tests if the candidate remembers the town name or only the district name.
   • Lucknow, 1951 – Lucknow houses the Central Drug Research Institute (CDRI, established 1951), not CECRI. This confuses two CSIR labs.
3. Why the correct choice is right: The institute is indeed at Karaikudi (Tamil Nadu) and was established in 1953. The combination of three names – Alagappa Chettiar (philanthropist who donated the campus), Dr S.S. Bhatnagar (CSIR founder‑DG), and Pt. Nehru (Prime Minister who inaugurated it) – uniquely identifies CECRI.

Correct answer: The Central Electrochemical Research Institute was established at Karaikudi in 1953.

Takeaway: For any CSIR lab, memorise the exact town and year. Do not confuse with district names or other labs. Use the mnemonic “CECRI at Karaikudi – 53” (rhymes with “chee‑kree”).

Example 2 — RPSC 2018

Question: The princely state which was not the part of Rajasthan Union formed on 25th March, 1948?

Choices students saw:

• Bundi
• Udaipur
• Shahpura
• Pratapgarh

Walkthrough:

1. What the question is testing: Detailed chronological knowledge of the integration of Rajasthan. The student must know the exact membership of the first Rajasthan Union, not the later enlarged union.
2. Why each wrong choice is wrong:
   • Bundi, Udaipur, Shahpura – These three were indeed part of the Rajasthan Union of 25 March 1948. The fourth member was Jhalawar (which was not listed as a choice). The question asks for the one that was not part, so these are actual members.
   • Pratapgarh – This was not included on 25 March 1948; it joined later on 18 April 1948. Therefore, it is the correct answer to the “not part” question.
3. Why the correct choice is right: The Rajasthan Union started with four states: Bundi, Udaipur, Shahpura, and Jhalawar. Pratapgarh was absent on that date. The candidate must not assume all small southern states joined simultaneously.

Correct answer: Pratapgarh was not a part of the Rajasthan Union formed on 25 March 1948.

Takeaway: For all stages of Rajasthan integration, memorise not just the order but the exact membership list per stage. The “not part” question is a common trap that separates superficial knowledge from precise recall.

Example 3 — RPSC 2023

Question: Select the correct answer by using the code given below [statements (i), (ii), (iii), (iv) not reproduced here].

Choices students saw:

• (ii) and (iii)
• (ii) and (iv)
• (i), (ii), (iii) and (iv)
• Question not attempted

Correct answer: (ii), (iii) and (iv) – as per the resolved key.

Walkthrough:

1. What the question is testing: The code‑based format requires the candidate to evaluate each statement independently and then identify which combination is correct. It tests multiple facts in a single question, often about the same topic (e.g., statements about the integration of princely states, the stages of Rajasthan formation, or the provisions of an industrial policy).
2. Why each wrong choice is wrong: Without the exact statements, we can only generalise. The wrong combinations (ii)+(iii), (ii)+(iv), or all four) would be incorrect because they either omit a true statement or include a false one. For example, if statement (i) was “Pratapgarh was part of the Rajasthan Union from the start”, then (i) is false. Hence any combination including (i) is wrong. The correct key (ii, iii, iv) means only those three statements are true.
3. Why the correct choice is right: The resolved answer shows that three statements out of four are correct. The candidate must be able to identify the single false statement (likely the one about an earlier date or membership). This aligns with the pattern seen in 2018 – a detail about Pratapgarh’s late inclusion. So statement (i) was probably the false one.

Correct answer: The correct combination is statements (ii), (iii), and (iv).

Takeaway: To ace code‑based questions, prepare “true/false” checklists for every topic. Use a mnemonic to fix the false statement in your mind – e.g., “Pratapgarh was a late joiner”. Then, in the exam, eliminate any combination that includes the false statement.

PYQ Trends & Patterns

Based on the three available PYQs, we can identify the following meta‑patterns that will guide your preparation strategy.

Temporal spread and difficulty

• The questions span 2018, 2021, 2023, indicating that this sub‑topic is tested almost every year. The difficulty is consistently moderate – no statement‑justification or multi‑step analysis.
• Two questions are pure factual recall (date‑location, membership list). One question is code‑based combinatorial, which is a slight escalation in complexity but still tests facts rather than interpretation.

Factual vs Analytical Split

• 100% factual: no question requires you to explain why a policy was adopted or compare two policies. RPSC seems to test the “what, when, where” dimension. However, the 2023 code question does force you to evaluate truth‑value of multiple statements, which is a step towards analysis.
• Likely pattern: future exams may include a simple “match the following” or “which of the following is/are correct” type.

Thematic concentration

• Rajasthan Integration appears twice: once directly (2018) and once likely (2023). This topic is the biggest hotspot.
• Scientific institutions appears once (2021). Other economic policies (Five‑Year Plans, Industrial Policy Resolutions) have not yet appeared in these three questions, but they are squarely within the syllabus. Their absence may mean they are due for testing.

Question types that recur

• “Which was not …” / “Identify the exception” – used in 2018.
• “When and where …” – used in 2021.
• “Select correct code” – used in 2023.
• Avoided so far: chronology‑order questions (e.g., “Arrange the following in correct sequence”) and map‑based questions. But these are natural candidates for future exams.

What Else Could Be Asked

Based on the tested PYQs and the syllabus points, we can forecast new question angles. The table below presents 8 specific predictions, each anchored in the proven testing style.

Common Mistakes & Traps

Aspirants often lose marks on these subtopics due to the following specific confusions.

• Confusing the dates of Matsya Union (17 Mar 48) and Rajasthan Union (25 Mar 48). Why trap works: The dates are only eight days apart. The mnemonic “MURP” (Matsya, Union, Rajasthan, Pradesh) helps fix the order.
• Assuming Pratapgarh was always in the Rajasthan Union. Why trap works: Pratapgarh is a small state; many students assume all small southern states joined together. You must memorise that it joined on 18 April 1948, not 25 March 1948.
• Confusing the town and district of CECRI: Karaikudi vs Sivaganga. Why trap works: The distractor “Shivganga, 1953” sounds similar. The institute is located in Karaikudi town inside Sivaganga district. The question specifically asks “where” – the town is the precise answer.
• Mixing up the location of CSIR labs – e.g., CECRI (Karaikudi, TN) vs CDRI (Lucknow, UP). Why trap works: Both are CSIR labs of similar vintage (1953 vs 1951). A mnemonic like “CECRI – Karaikudi (cheeky)” and “CDRI – Lucknow (luck)” can help.
• Forgetting that the Rajasthan Union initially had four members, not three. Why trap works: Some sources mistakenly list only three. The fourth is Jhalawar. The 2018 question included Bundi, Udaipur, Shahpura as choices but not Jhalawar – so the “not part” answer was Pratapgarh. But if a question asks “which of the following was a member,” Jhalawar must be known.
• Assuming all Five‑Year Plans were of five years (they were, but some plans were interrupted). Not directly tested yet, but a potential trap in matching questions.
• Misinterpreting the code‑based question – selecting options that include a false statement. Why trap works: The candidate might correctly identify three true statements but inadvertently choose a combination that leaves out one true statement. Always double‑check each possible code.

Memory Aids & Mnemonics

1. The “MURP‑GR” Chain for Rajasthan Integration

• Name: MURP‑GR
• What it unlocks: The chronological sequence of Rajasthan’s unification.
• The mnemonic:
  M → Matsya Union (17 Mar 48)
  U → Union (Rajasthan Union, 25 Mar 48)
  R → Rajasthan Union enlarged (18 Apr 48)
  P → Greater Rajasthan (30 Mar 49)
  G → State of Rajasthan (26 Jan 50) – Greater + Matsya merged
  R → Reorganisation (1 Nov 56)
• Worked example: When asked “Which was formed first – Matsya Union or Rajasthan Union?” you recall the mnemonic’s first two letters: M before U. So Matsya (17 Mar) came before Rajasthan Union (25 Mar).
• Extension for membership: For the critical “not part” question, add a sub‑mnemonic: “Pratapgarh is Post‑Union” – i.e., it joined after the original Union.

2. The “Chettiar’s Scientific Clock” for CSIR Labs

• Name: Chettiar’s Clock
• What it unlocks: The year and location of major early CSIR labs, especially CECRI.
• The mnemonic: Create a mental story linking the philanthropist Alagappa Chettiar to a clock:
  “Chettiar’s clock struck 1 (for 1951? No – use another anchor). Actually, use a numeric pattern:
  CECRI – Karaikudi – 1953 (the last two digits 53).
  CDRI – Lucknow – 1951 (51).
  NPL – New Delhi – 1947 (47).
  NCL – Pune – 1950 (50).
  CFTRI – Mysore – 1948 (48).
  The mnemonic is: “C K 53, C L 51, N N 47, N P 50, C M 48” – repeat as a chant.
• Worked example: When asked “When was CECRI established?” you say “C K 53” → Karaikudi, 1953. When asked about CDRI, “C L 51” → Lucknow, 1951.
• Tip: For the RPSC exam, focus on the ones that have already been tested (CECRI) and the ones with similar sounding years (CDRI 1951) to avoid confusion.

3. The “PSP” Rule for Rajasthan Union Membership

• Name: PSP (Pratapgarh is Separate Post‑Union)
• What it unlocks: That Pratapgarh was not in the original Rajasthan Union.
• The mnemonic: “Pratapgarh is Separate Post‑Union” – the three Ps remind you that Pratapgarh joined later.
• Worked example: In the 2018 question, you instantly know the answer is Pratapgarh.

Quick Revision

Introduction

• Post‑1947 India policies cover integration of princely states, scientific‑industrial institution‑building, economic planning, and constitutional evolution.
• RPSC tests factual recall (dates, locations, membership) and code‑based combinatorial questions.

Core Concepts & Foundations

• Integration of Princely States – Sardar Patel’s policy of Instrument of Accession, merger, and police action.
• Rajasthan Union (25 Mar 48) – Bundi, Udaipur, Shahpura, Jhalawar (Pratapgarh not included).
• Matsya Union (17 Mar 48) – Alwar, Bharatpur, Dholpur, Karauli.
• Greater Rajasthan (30 Mar 49) – Merged all larger states.
• CECRI – Karaikudi, 1953; founded by Alagappa Chettiar, S.S. Bhatnagar, Nehru.
• Five‑Year Plans – First Plan (agriculture), Second Plan (heavy industry).
• Industrial Policy Resolutions – 1948 (four categories), 1956 (three schedules, socialist pattern).

Integration of Rajasthan

• Seven stages: Matsya Union → Rajasthan Union → Enlarged Rajasthan Union → Greater Rajasthan → State of Rajasthan → Reorganisation 1956.
• Key fact: Pratapgarh joined 18 Apr 48, not on 25 Mar 48.

Scientific Institutions

• CECRI was part of Nehru’s scientific‑industrial policy, funded via Five‑Year Plans.
• Other CSIR labs: NPL (1947, Delhi), NCL (1950, Pune), CDRI (1951, Lucknow), CFTRI (1948, Mysore).

Economic Planning

• Planning Commission (1950) – extra‑constitutional body.
• Second Plan (1956‑61) – Mahalanobis model, heavy industry focus.
• Industrial Policy 1956 – Schedule A (state monopoly), B (state + private), C (licensed private).

Worked Examples

• 2021: CECRI at Karaikudi, 1953.
• 2018: Pratapgarh not in Rajasthan Union of 25 Mar 48.
• 2023: Code‑based question – be ready to evaluate each statement independently.

Common Mistakes

• Confusing date/order of unions (Matsya vs Rajasthan).
• Assuming Pratapgarh was always included.
• Mixing up CSIR lab towns (Karaikudi vs Lucknow).
• Forgetting Jhalawar as the fourth member.

Memory Aids

• MURP‑GR for chronological stages.
• C K 53, C L 51 for CSIR labs.
• PSP rule for Pratapgarh.

This revision sheet, combined with the detailed sections above, should equip you to answer every RPSC question on Post‑1947 India (Policies & Developments). Study the tables, practise the mnemonics, and verify each factual detail against standard textbooks. Good luck.