Business StudiesCBSE Class 12 · Financial Markets

Stock Exchange: Functions and Trading Procedure (Class 12)

Updated 15 October 2026 · Fact-checked

A stock exchange is an institution that provides a platform for buying and selling existing securities. It provides liquidity, prices securities, ensures safe dealing, aids economic growth, spreads the equity cult and allows limited speculation. Screen-based trading runs: broker, demat account, order, execution, contract note, pay-in, settlement.

Follow the arrows: an investor trades through a broker and demat account, and the deal ends with pay-in and settlement.

Illustration drawn for QuestionBuddy.

Understand Stock Exchange: Functions and Trading Procedure

Scope note. Unit 10 has no current NCERT chapter; this page follows the 2026-27 syllabus: stock exchange meaning, functions, trading procedure, depository services and demat account.

Meaning. A stock exchange is an institution that provides a platform for buying and selling existing securities. The Securities Contracts (Regulation) Act, 1956 describes it as an association, organisation or body of individuals, whether incorporated or not, set up to assist, regulate and control business in buying, selling and dealing in securities. It is the secondary market.

Six functions.

1. Providing liquidity and marketability to existing securities: investors can disinvest and reinvest at any time.
2. Pricing of securities: prices are set by demand and supply, giving a constant valuation of securities.
3. Safety of transactions: membership is well regulated and dealings follow the legal framework, so investors get a safe and fair deal.
4. Contributes to economic growth: through disinvestment and reinvestment, savings are channelled into the most productive investments.
5. Spreading of equity cult: wider share ownership through investor education and regulation of new issues.
6. Providing scope for speculation: limited, healthy speculation is allowed within the law, which ensures demand and supply and therefore liquidity.

Screen-based trading. Indian exchanges use online, screen-based trading through computer terminals, replacing the old open-outcry system on a trading floor.

Trading procedure (seven steps).

1. Selection of a broker: only registered brokers (members of the exchange) can trade; the investor fills a client registration form and gives identity proof and PAN.
2. Opening a demat account with a depository participant (DP), plus a linked bank account.
3. Placing the order with the broker: which security, buy or sell, quantity and price.
4. Executing the order: the broker enters it in the exchange's trading system; when a matching order is found, the trade is done.
5. Issue of a contract note: the broker issues a contract note recording the details of the trade.
6. Pay-in: the buyer pays money, or the seller delivers securities, to the broker.
7. Settlement (pay-out): the exchange settles the trade within the settlement cycle fixed by SEBI; securities are credited to the buyer's demat account and money to the seller.

Depository services.

Depository: an institution that holds securities in electronic form (as a bank holds money) and transfers them on the investor's instructions. India has two: NSDL (National Securities Depository Limited) and CDSL (Central Depository Services (India) Limited).
Depository participant (DP): an agent of the depository (a bank, broker or financial institution registered with it) through which the investor deals.
Dematerialisation: converting physical share certificates into electronic holdings, held in a demat account. Benefits: no risk of theft, loss or forgery of certificates; quick transfer; less paperwork and cost. (Electronic to physical again is rematerialisation.)

Case cues. 'could sell her shares the same day and get cash' (liquidity and marketability); 'share price changes every minute as buyers and sellers react' (pricing); 'strict rules for brokers protect investors' (safety of transactions); 'more people in small towns now own shares' (spreading equity cult); 'converted his old paper certificates into electronic form' (dematerialisation).

Stock Exchange: Functions and Trading Procedure: key facts

Stock exchange: Platform for buying and selling existing securities (secondary market); SCRA 1956: assist, regulate, control.
Six functions: Liquidity and marketability; pricing; safety; economic growth; equity cult; speculation; Mnemonic: 'Lovely Prices Stay Good Every Season' (L-P-S-G-E-S).
Seven trading steps: 1.Broker
2.Demat account
3.Place order
4.Execute
5.Contract note
6.Pay-in
7.Settlement; Mnemonic: 'Bring Down People's Expensive Coffee Prices Soon' (B-D-P-E-C-P-S).
Depository chain: 1.Investor
2.Depository participant
3.Depository (NSDL/CDSL); Demat account is held with the DP.
Dematerialisation: Physical certificates → electronic holdings; Reverse: rematerialisation.

How to answer Stock Exchange: Functions and Trading Procedure questions

Stock exchange questions are often 6-mark (functions, or the trading procedure) and 3-mark cases on functions or demat.

1For functions, match the case cue: selling easily (liquidity), price set by demand and supply (pricing), regulation protects investors (safety), savings to best uses (growth), wider share ownership (equity cult), controlled speculation (speculation).
2For the procedure, list the seven steps in order with one line each; name PAN, DP, demat account and contract note.
3If the case stops at a step, the 'next step' is the following one in the list.
4For demat questions, define depository, DP and dematerialisation and give two benefits.
5Quote case lines and use exact headings.

Stock Exchange: Functions and Trading Procedure in real life

The idea, met in an everyday situation. Answer the question in your own words, then compare with the model answer. The one-line hook is what to remember.

Liquidity and marketability

Suppose your uncle bought shares of a listed bank five years ago. His daughter's college fees are due next week, so he sells the shares through his broker and receives the money in his bank account within days.

Which function of the stock exchange helped him?

Try it first, then show the solutionSolution

He could convert his investment into cash quickly.
This is possible because there is a ready market for listed securities.

Answer: Providing liquidity and marketability to existing securities: investors can disinvest whenever they need cash.

Memory hook: A listed share is a key that opens cash quickly.

Demat account

Imagine your grandmother finds old paper share certificates in a cupboard; some are torn and one has her late husband's name misspelt. Her broker says she should convert them before selling.

What should she do and why?

Try it first, then show the solutionSolution

Open a demat account with a depository participant.
Submit the certificates for dematerialisation.
Electronic holdings remove the risk of loss, theft or damage.

Answer: She should open a demat account with a depository participant and dematerialise the certificates. Electronic holdings cannot be torn, lost or forged, and they can be transferred quickly when she sells.

Memory hook: Paper tears; electronic holdings don't.

Tricks to remember Stock Exchange: Functions and Trading Procedure

Short memory aids. Say each one aloud once, then use it on a question the same day.

L-P-S-G-E-S
'Lovely Prices Stay Good Every Season': Liquidity, Pricing, Safety, Growth, Equity cult, Speculation.
Use it when: Six functions.
B-D-P-E-C-P-S
'Bring Down People's Expensive Coffee Prices Soon': Broker, Demat, Place order, Execute, Contract note, Pay-in, Settlement.
Use it when: Trading steps in order.
Bank for shares
A depository is to shares what a bank is to money; the DP is the branch you visit.
Use it when: Depository questions.

Stock Exchange: Functions and Trading Procedure: solved examples

Ordered from board level to HOTS. Try each one before you open the solution.

Example 1: First step of trading · 1 mark · MCQBoard level

The first step in the screen-based trading procedure is:
(a) Opening a demat account
(b) Selection of a broker
(c) Placing the order
(d) Issue of contract note

Try it first, then show the solutionSolution

Only registered brokers can trade, so the investor first selects one (1 mark).

Answer: (b) Selection of a broker

Example 2: Three functions · 3 marks · Short answerBoard level

Explain any three functions of a stock exchange. (3 marks)

Try it first, then show the solutionSolution

One mark per function with a line.

Answer: Any three: (1) Providing liquidity and marketability: investors can sell and buy existing securities any time. (2) Pricing of securities: prices are set by demand and supply. (3) Safety of transactions: regulated membership and legal framework ensure a safe and fair deal. (4) Contributes to economic growth by channelling savings to productive uses. (5) Spreading of equity cult. (6) Providing limited scope for speculation.

Example 3: Functions from a case · 3 marks · Short answerHarder board level

Since 'Pragati Stock Exchange' began strict checks on brokers and online trading, investors in small towns have started buying shares in large numbers, and a farmer from Nashik sold his shares within minutes to pay for seeds. Identify three functions of the stock exchange shown. (3 marks)

Try it first, then show the solutionSolution

'strict checks on brokers': safety of transactions (1 mark).
'investors in small towns have started buying shares': spreading of equity cult (1 mark).
'sold his shares within minutes': liquidity and marketability (1 mark).

Answer: (1) Safety of transactions ('strict checks on brokers'). (2) Spreading of equity cult ('investors in small towns have started buying shares'). (3) Providing liquidity and marketability ('sold his shares within minutes to pay for seeds').

Example 4: Missing steps · 3 marks · Short answerHarder board level

Riya opened a demat account with her bank, which is a depository participant, after registering with a broker and submitting her PAN. She then asked the broker to buy 50 shares of a company at ₹420. Explain the next three steps in the trading procedure. (3 marks)

Try it first, then show the solutionSolution

Steps 1-3 done (broker, demat, placing order).
Next: execution of the order (1 mark), contract note (1 mark), pay-in (1 mark).

Answer: (1) Executing the order: the broker enters it in the exchange's trading system; when a matching sell order at ₹420 is found, the trade is done. (2) Issue of contract note: the broker gives Riya a contract note with the details of the trade. (3) Pay-in: Riya pays the money to the broker. (Then settlement: the shares are credited to her demat account.)

Example 5: Speculation: harmful or useful? · 4 marks · Short answerHOTS / competency

Suppose a newspaper editorial says, 'Stock exchanges are just gambling dens; speculation should be banned completely.' Evaluate this view using the functions of a stock exchange. (4 marks)

Try it first, then show the solutionSolution

Stock exchanges allow only limited, controlled speculation within the law (1 mark).
Healthy speculation ensures demand and supply, and thus liquidity and price discovery (1 mark).
Other functions: safety, economic growth, equity cult (1 mark).
Conclusion: regulated speculation is useful; excess is controlled by regulation (1 mark).

Answer: The view is exaggerated. A stock exchange provides scope for speculation only in a limited, controlled way within the legal framework. Healthy speculation keeps buyers and sellers active, which supports liquidity and fair pricing of securities. The exchange also ensures safety of transactions through regulated membership, channels savings into productive investment and spreads the equity cult. Banning speculation completely would reduce liquidity; the right approach is regulation, which SEBI provides.

Example 6: Case study: from certificate to sale · 4 marks · Case-basedHOTS / competency

Mr. Joseph holds 200 paper share certificates of 'Malabar Spices Ltd.' He wants to sell them. His friend advises him: (i) choose a registered member of the exchange and give PAN details; (ii) open an account with a DP and convert the certificates into electronic form; (iii) instruct the broker to sell at ₹310; (iv) after the sale, check the document from the broker giving trade details.
(a) Name the process in (ii) and the two institutions involved. (2 marks)
(b) Name the document in (iv). (1 mark)
(c) State one benefit of (ii) to Mr. Joseph. (1 mark)

Try it first, then show the solutionSolution

(a) Dematerialisation; depository participant and depository (NSDL or CDSL) (2 marks).
(b) Contract note (1 mark).
(c) No risk of loss, theft or forgery; quick transfer (1 mark).

Answer: (a) Dematerialisation (converting physical certificates into electronic holdings in a demat account); institutions: the depository participant and the depository (NSDL or CDSL). (b) Contract note. (c) Electronic holdings remove the risk of loss, theft, damage or forgery of certificates and allow quick transfer.

Where students lose marks in Stock Exchange: Functions and Trading Procedure

The slips examiners see most often, and what to write instead.

Mistake: Wrong order of trading steps
Demat and broker are swapped, or contract note comes too early.
Wrong working
Place order → contract note → execute.
Right working
Place order → execute → contract note.
Do this: B-D-P-E-C-P-S.
Usually costs: 1 to 2 marks.
Mistake: Calling SEBI a depository
Regulator and depository are confused.
Wrong working
Shares are held electronically by SEBI.
Right working
Depositories (NSDL, CDSL) hold them; SEBI regulates.
Do this: Bank for shares = depository.
Usually costs: 1 mark.
Mistake: Describing speculation as purely harmful
Ignoring its listed function.
Wrong working
Stock exchanges must stop all speculation.
Right working
Limited, controlled speculation is a function; it supports liquidity.
Do this: Healthy speculation within the law.
Usually costs: 1 mark.
Mistake: Listing functions without explanation
6-mark answers need a line for each.
Wrong working
1. Liquidity 2. Pricing 3. Safety...
Right working
Each function with one line of meaning.
Do this: Heading plus one line.
Usually costs: Half the marks.

Exam tips

Stock exchange functions and trading procedure were 6-mark questions in the 2026 board paper 66/1/1 (Q33) and the 2026-27 sample paper (Q32), and 3-mark questions in the 2023-24 sample paper (Q24(a) and (b)).
Learn the trading procedure in order and include PAN, DP, demat account and contract note.
Financial Markets has no current NCERT chapter; answer from the CBSE syllabus scope.
Financial Management and Financial Markets together carry 15 of the 80 theory marks in 2026-27.

Practice questions on Stock Exchange: Functions and Trading Procedure

Write each answer on paper first. Open the hint only if you are stuck, and the answer only when you have finished.

Q1 · 1 mark · MCQBoard level
In India, securities in electronic form are held by:
(a) SEBI
(b) Depositories such as NSDL and CDSL
(c) Stock brokers
(d) The Reserve Bank of India
Hint
Bank for shares.
Answer
(b) Depositories such as NSDL and CDSL
Q2 · 1 mark · Short answerBoard level
What is a contract note? (1 mark)
Hint
Issued after execution.
Answer
A document issued by the broker to the investor after the order is executed, recording the details of the trade (security, quantity, price, date and charges).
Q3 · 6 marks · Long answerBoard level
Explain the steps in the trading procedure on a stock exchange. (6 marks)
Hint
Seven steps.
Answer
(1) Selection of a broker: a registered member; client form, identity proof and PAN. (2) Opening a demat account with a depository participant, plus a bank account. (3) Placing the order: security, buy/sell, quantity, price. (4) Executing the order: the broker enters it on the screen-based system; the trade is done when orders match. (5) Issue of contract note with trade details. (6) Pay-in: buyer pays money, seller delivers securities to the broker. (7) Settlement: the exchange settles within the SEBI cycle; securities go to the buyer's demat account and money to the seller.
Q4 · 2 marks · Short answerHarder board level
Distinguish between a depository and a depository participant. (2 marks)
Hint
Institution vs agent.
Answer
A depository (NSDL or CDSL) is the institution that holds securities in electronic form and transfers them on instructions. A depository participant is its agent (a bank, broker or financial institution registered with the depository) through which investors open demat accounts and deal with the depository.
Q5 · 2 marks · Short answerHarder board level
How does a stock exchange contribute to economic growth? (2 marks)
Hint
Disinvestment and reinvestment.
Answer
Through repeated disinvestment and reinvestment, savings flow out of less productive securities into more productive ones. This channels the economy's savings into the most productive investments, which supports capital formation and growth.
Q6 · 3 marks · Short answerHarder board level
State any three benefits of a demat account. (3 marks)
Hint
Paper problems disappear.
Answer
Any three: (1) no risk of theft, loss or damage of certificates; (2) no risk of forgery; (3) quick and easy transfer of securities; (4) less paperwork and lower cost of handling.
Q7 · 1 mark · Assertion-reasonHarder board level
Assertion (A): A stock exchange provides liquidity to existing securities.
Reason (R): A stock exchange provides a ready platform where investors can buy and sell existing securities at any time.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Hint
Ready market.
Answer
(a) Both A and R are true and R is the correct explanation of A.
Q8 · 2 marks · Short answerHarder board level
Explain 'pricing of securities' and 'safety of transactions' as functions of a stock exchange. (2 marks)
Hint
Demand and supply; regulation.
Answer
Pricing of securities: share prices are determined by the forces of demand and supply on the exchange, giving a constant valuation of securities. Safety of transactions: membership is well regulated and dealings follow a defined legal framework, so investors get a safe and fair deal.
Q9 · 3 marks · Short answerHOTS / competency
Suppose a young investor wants to skip the broker and trade directly on the exchange's system to save fees. Explain why this is not possible and what safeguard it reflects. (3 marks)
Hint
Only registered members trade.
Answer
Only registered brokers (members of the exchange) can trade on it, so an investor must act through one; the first step of the procedure is selecting a broker and completing registration with PAN and identity proof. This reflects the 'safety of transactions' function: regulated membership and the legal framework protect investors and ensure fair dealing.
Q10 · 3 marks · Short answerHOTS / competency
An investor says, 'Since my shares are in my demat account, the company I invested in gets money every time someone buys its shares on the exchange.' Evaluate. (3 marks)
Hint
Secondary market.
Answer
Incorrect. A stock exchange is a secondary market where existing securities change hands between investors; the money goes from the buyer to the selling investor, not to the company. The company receives money only when it issues new securities in the primary market. The exchange helps the company indirectly by giving its shares liquidity and a market price.

Test your recall

Answer in your head or on paper first, then open the card. Pulling an answer out of memory makes it stick far better than re-reading.

1.Define a stock exchange.Show answer
An institution that provides a platform for buying and selling existing securities.
2.Name India's two depositories.Show answer
NSDL and CDSL.
3.What is dematerialisation?Show answer
Converting physical share certificates into electronic holdings.
4.Which document does the broker issue after a trade?Show answer
Contract note.
5.Name two functions of a stock exchange.Show answer
Any two: liquidity and marketability, pricing, safety, economic growth, equity cult, speculation.
6.What is the first step of trading?Show answer
Selection of a broker.

Stock Exchange: Functions and Trading Procedure: frequently asked questions

What are the functions of a stock exchange in Class 12?

Providing liquidity and marketability to existing securities, pricing of securities, safety of transactions, contributing to economic growth, spreading the equity cult and providing scope for limited speculation.

What is the trading procedure on a stock exchange?

Select a broker, open a demat account, place the order, execute it, receive a contract note, complete pay-in, and get settlement through the exchange.

What is a demat account?

An account with a depository participant in which securities are held in electronic form instead of paper certificates.

Does a company receive money when its shares are traded on the stock exchange?

No. Trading on the exchange is between investors; the company receives money only when it issues new securities in the primary market.