Test 1: Process and Operation Costing: answer key

Question 1 · 2 marks · Chapter 10: Process and Operation Costing · medium

Scenario. Apex Polychem Ltd. manufactures a specialized chemical solvent through two sequential processes, P1 and P2. The company transfers output between processes at a price that includes a 25% profit on cost. For the month of October 2026, the following data is available: Process 1: Input 10,000 units. Costs incurred: Materials ₹1,00,000; Labour ₹40,000; Overheads ₹20,000. Normal loss is estimated at 2,000 units with no scrap value. Actual output transferred to P2 is 8,000 units. Process 2: Receives 8,000 units. Additional costs: Materials ₹50,000; Labour ₹30,000; Overheads ₹20,000. Normal loss is fixed at 500 units, which are sold as scrap at ₹20 per unit. The output of P2 is transferred to Finished Stock. During the month, 7,300 units were completed and transferred, while 500 units remained as closing work-in-process (full complete for materials and 50% for conversion costs). The company uses the Weighted Average method for valuing closing WIP. No opening WIP existed in either process.

What is the cost per unit of output transferred from Process 1 to Process 2?

1. ₹18.50
2. ₹20.00 (correct answer)
3. ₹21.05
4. ₹22.50

Answer: B — ₹20.00

Explanation. Step 1: Total cost in P1 = ₹1,00,000 + ₹40,000 + ₹20,000 = ₹1,60,000. Step 2: Expected output = 10,000 input - 2,000 normal loss = 8,000 units. Step 3: Cost per unit = ₹1,60,000 / 8,000 units = ₹20.00. Option c is a trap resulting from dividing total cost by actual output (7,600) or incorrectly adjusting for abnormal loss.

Where it goes wrong. Students might divide total cost by actual output instead of expected output after normal loss.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 2 · 2 marks · Chapter 10: Process and Operation Costing · hard

What is the value of abnormal gain in Process 2?

1. ₹8,000
2. ₹10,000
3. ₹12,000 (correct answer)
4. ₹15,000

Answer: C — ₹12,000

Explanation. Step 1: Actual output in P2 = 7,300 (completed) + 500 (WIP) = 7,800 units. Expected output = 8,000 - 500 (normal loss) = 7,500 units. Abnormal gain = 300 units. Step 2: Total cost in P2 = TP from P1 (8,000 * ₹25 = ₹2,00,000) + Added costs (₹1,00,000) = ₹3,00,000. Step 3: Cost per unit in P2 = ₹3,00,000 / 7,500 = ₹40. Step 4: Value of abnormal gain = 300 units * ₹40 = ₹12,000. Trap: Using P1 cost per unit (₹20) instead of P2 cost per unit (₹40).

Where it goes wrong. Students often calculate abnormal gain using the previous process's cost per unit rather than the current process's cost per unit.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 3 · 2 marks · Chapter 10: Process and Operation Costing · medium

What is the total inter-process profit included in the closing stock of Process 2 (Stock Reserve)?

1. ₹4,000 (correct answer)
2. ₹5,000
3. ₹6,000
4. ₹8,000

Answer: A — ₹4,000

Explanation. Step 1: Closing WIP equivalent units = 500 (mat) + 250 (conv) = 750 units. Value of Closing WIP = 750 * ₹40 = ₹30,000. Step 2: Total inter-process profit in P2 = TP (₹2,00,000) - Cost from P1 (₹1,60,000) = ₹40,000. Step 3: Profit proportion = ₹40,000 / ₹3,00,000 (total cost) = 2/15. Step 4: Stock reserve = ₹30,000 * (2/15) = ₹4,000. Trap: Calculating reserve on the transfer price value of closing stock rather than its actual cost value.

Where it goes wrong. Students often calculate stock reserve on the transfer price value of closing stock rather than its actual cost value.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 4 · 2 marks · Chapter 10: Process and Operation Costing · hard

What is the value of completed units transferred to Finished Stock from Process 2?

1. ₹2,80,000
2. ₹2,88,000
3. ₹3,12,000
4. ₹2,92,000 (correct answer)

Answer: D — ₹2,92,000

Explanation. Step 1: Completed units transferred to Finished Stock = 7,300 units. Step 2: Cost per equivalent unit in P2 = ₹40. Step 3: Value of completed units = 7,300 units * ₹40 = ₹2,92,000. Option c is a trap resulting from including the closing WIP units (500) in the completed units calculation (7,800 * 40 = 3,12,000).

Where it goes wrong. Students might include the closing WIP units in the completed units calculation, leading to an inflated valuation.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 5 · 2 marks · Chapter 10: Process and Operation Costing · medium

Scenario. Zenith Consumer Care Ltd. manufactures premium skincare creams. The production involves two departments. Department A uses process costing, while Department B uses operation costing. Department A (Weighted Average Method): Opening WIP: 2,000 units (full materials, 40% conversion). Costs: Materials ₹40,000; Conversion ₹12,000. Units introduced during October: 18,000 units. Costs incurred: Materials ₹3,60,000; Conversion ₹2,65,500. Completed and transferred to Dept B: 17,000 units. Closing WIP: 3,000 units (full materials, 50% conversion). No normal loss occurs. Department B (Operation Costing): Receives 17,000 units. Materials are added in two batches: Batch X (8,000 units) uses Premium Extract at ₹50 per unit. Batch Y (9,000 units) uses Standard Extract at ₹30 per unit. Conversion costs are applied uniformly at a predetermined rate of ₹25 per unit. All units in Dept B are full complete.

Under the Weighted Average method, what is the equivalent unit cost for conversion costs in Department A?

1. ₹12.00
2. ₹15.00 (correct answer)
3. ₹18.50
4. ₹20.00

Answer: B — ₹15.00

Explanation. Step 1: Total Conversion Cost = ₹12,000 (Opening WIP) + ₹2,65,500 (Current) = ₹2,77,500. Step 2: Equivalent units for conversion = 17,000 (completed) + 1,500 (50% of 3,000 closing WIP) = 18,500 units. Step 3: Cost per EU = ₹2,77,500 / 18,500 = ₹15.00. Trap: Under FIFO, opening WIP would be treated differently, but Weighted Average aggregates all costs and ignores the prior period completion percentage for the cost pool.

Where it goes wrong. Students might mistakenly apply FIFO logic, separating opening WIP costs from current costs, which is incorrect for the Weighted Average method.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 6 · 2 marks · Chapter 10: Process and Operation Costing · hard

What is the total cost of units completed and transferred from Department A to Department B?

1. ₹5,40,000
2. ₹5,65,000
3. ₹5,95,000 (correct answer)
4. ₹6,20,000

Answer: C — ₹5,95,000

Explanation. Step 1: Material EU = 17,000 + 3,000 = 20,000. Total Mat Cost = ₹4,00,000. Mat cost per EU = ₹20. Step 2: Conversion cost per EU = ₹15 (from Q5). Total cost per unit = ₹20 + ₹15 = ₹35. Step 3: Value of completed units = 17,000 units * ₹35 = ₹5,95,000. Trap: Using FIFO method, which would separate opening WIP costs and yield a different cost per unit for the completed units.

Where it goes wrong. Students might use FIFO method, separating opening WIP costs from current costs, which would yield a different cost per unit.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 7 · 2 marks · Chapter 10: Process and Operation Costing · medium

In Department B, what is the total cost of Batch X (Premium Extract)?

1. ₹6,00,000 (correct answer)
2. ₹4,00,000
3. ₹5,25,000
4. ₹6,75,000

Answer: A — ₹6,00,000

Explanation. Step 1: Batch X units = 8,000. Step 2: Material cost = 8,000 units * ₹50 = ₹4,00,000. Step 3: Conversion cost = 8,000 units * ₹25 = ₹2,00,000. Step 4: Total cost for Batch X = ₹4,00,000 + ₹2,00,000 = ₹6,00,000. Trap: Operation costing tracks materials by batch but applies conversion uniformly. Students might incorrectly allocate conversion costs based on material costs rather than physical units.

Where it goes wrong. Students might incorrectly allocate conversion costs based on material costs rather than physical units.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 8 · 2 marks · Chapter 10: Process and Operation Costing · hard

What is the total conversion cost applied in Department B for the entire production?

1. ₹3,50,000
2. ₹3,85,000
3. ₹4,00,000
4. ₹4,25,000 (correct answer)

Answer: D — ₹4,25,000

Explanation. Step 1: Total units received in Dept B = 17,000 units. Step 2: Predetermined conversion rate = ₹25 per unit. Step 3: Total conversion cost = 17,000 units * ₹25 = ₹4,25,000. Trap: Students might try to split the conversion cost between the two batches based on material costs, but operation costing applies conversion uniformly per unit across all batches.

Where it goes wrong. Students might try to split the conversion cost between the two batches based on material costs rather than applying it uniformly per unit.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 9 · 2 marks · Chapter 10: Process and Operation Costing · medium

Scenario. A process has an input of 5,000 units and a total cost of ₹95,000. Normal loss is 10% of input, and scrap is sold at ₹5 per unit. If the actual output is 4,200 units, what is the value of the abnormal loss?

A process has an input of 5,000 units and a total cost of ₹95,000. Normal loss is 10% of input, and scrap is sold at ₹5 per unit. If the actual output is 4,200 units, what is the value of the abnormal loss?

1. ₹5,000
2. ₹6,000 (correct answer)
3. ₹7,500
4. ₹8,000

Answer: B — ₹6,000

Explanation. Step 1: Expected output = 5,000 - (10% of 5,000) = 4,500 units. Step 2: Abnormal loss = 4,500 - 4,200 = 300 units. Step 3: Net cost = ₹95,000 - (500 units * ₹5) = ₹90,000. Step 4: Cost per unit = ₹90,000 / 4,500 = ₹20. Step 5: Value of abnormal loss = 300 * ₹20 = ₹6,000. Trap: Forgetting to deduct the scrap value of normal loss before calculating the cost per unit.

Where it goes wrong. Forgetting to deduct the scrap value of normal loss before calculating the cost per unit.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 10 · 2 marks · Chapter 10: Process and Operation Costing · hard

Scenario. Opening WIP is 1,000 units (60% complete for conversion). 9,000 units are introduced. 8,500 units are completed. Closing WIP is 1,500 units (40% complete for conversion). Normal loss is 500 units. What are the equivalent units for conversion under the FIFO method?

Opening WIP is 1,000 units (60% complete for conversion). 9,000 units are introduced. 8,500 units are completed. Closing WIP is 1,500 units (40% complete for conversion). Normal loss is 500 units. What are the equivalent units for conversion under the FIFO method?

1. 7,900 units
2. 8,100 units
3. 8,500 units (correct answer)
4. 9,000 units

Answer: C — 8,500 units

Explanation. Step 1: Work to complete opening WIP = 1,000 * 40% = 400 units. Step 2: Units started and completed = 8,500 - 1,000 = 7,500 units. Step 3: Closing WIP = 1,500 * 40% = 600 units. Step 4: Total EU = 400 + 7,500 + 600 = 8,500 units. Normal loss does not consume conversion effort and is excluded. Trap: Including normal loss in the equivalent units or failing to separate opening WIP work from current period work.

Where it goes wrong. Including normal loss in the equivalent units or failing to separate opening WIP work from current period work under FIFO.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 11 · 2 marks · Chapter 10: Process and Operation Costing · medium

Scenario. Process A transfers 1,000 units to Process B at cost plus 25%. The cost of these units is ₹80,000. The closing stock of Process B is 200 units. If the total cost in Process B (including transfer) is ₹1,20,000, what is the stock reserve for unrealized profit?

Process A transfers 1,000 units to Process B at cost plus 25%. The cost of these units is ₹80,000. The closing stock of Process B is 200 units. If the total cost in Process B (including transfer) is ₹1,20,000, what is the stock reserve for unrealized profit?

1. ₹4,000 (correct answer)
2. ₹5,000
3. ₹6,000
4. ₹8,000

Answer: A — ₹4,000

Explanation. Step 1: Transfer price = ₹80,000 * 1.25 = ₹1,00,000. Inter-process profit = ₹20,000. Step 2: Profit proportion in total cost = ₹20,000 / ₹1,20,000 = 1/6. Step 3: Value of closing stock = 200 units * (₹1,20,000 / 1,000 units) = ₹24,000. Step 4: Stock reserve = ₹24,000 * (1/6) = ₹4,000. Trap: Calculating the reserve directly on the transfer price value of the closing stock (200 * 100 = 20,000; 20% of 20,000 = 4,000) which coincidentally matches here but fails if additional costs are incurred in Process B.

Where it goes wrong. Calculating the reserve directly on the transfer price value of the closing stock rather than its actual cost value inclusive of subsequent process costs.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 12 · 2 marks · Chapter 10: Process and Operation Costing · hard

Scenario. Which of the following most suitable describes the cost accumulation system in Operation Costing?

Which of the following most suitable describes the cost accumulation system in Operation Costing?

1. Materials are tracked by process, and conversion costs are tracked by job.
2. Both materials and conversion costs are tracked by specific job orders.
3. Both materials and conversion costs are accumulated by continuous processes.
4. Materials are tracked by job/batch, and conversion costs are accumulated by process/department. (correct answer)

Answer: D — Materials are tracked by job/batch, and conversion costs are accumulated by process/department.

Explanation. Operation costing is a hybrid system. It is used when products have similar conversion processes but differ in materials. Therefore, direct materials are traced to specific batches or jobs, while conversion costs (labour and overheads) are accumulated by department or process and applied using a predetermined rate. Trap: Confusing operation costing with pure job-order or pure process costing systems.

Where it goes wrong. Confusing operation costing with pure job-order or pure process costing systems.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 13 · 2 marks · Chapter 10: Process and Operation Costing · medium

Scenario. How is abnormal gain treated in the process account when actual production exceeds expected normal output?

How is abnormal gain treated in the process account when actual production exceeds expected normal output?

1. Credited to Process A/c and debited to Costing Profit & Loss A/c.
2. Debited to Process A/c and credited to Abnormal Gain A/c. (correct answer)
3. Credited to Process A/c and credited to Normal Loss A/c.
4. Debited to Costing Profit & Loss A/c and credited to Process A/c.

Answer: B — Debited to Process A/c and credited to Abnormal Gain A/c.

Explanation. Abnormal gain represents an unexpected increase in production. To balance the process account, the Process A/c is debited with the abnormal gain units (at the cost per unit of good output), and the Abnormal Gain A/c is credited. The Abnormal Gain A/c is later closed by transferring the net benefit to the Costing P&L A/c. Trap: Reversing the debit and credit entries, which would incorrectly increase the cost of good units.

Where it goes wrong. Reversing the debit and credit entries, which would incorrectly increase the cost of good units.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 14 · 2 marks · Chapter 10: Process and Operation Costing · hard

Scenario. When the Weighted Average method is used in process costing, how are opening work-in-process costs treated?

When the Weighted Average method is used in process costing, how are opening work-in-process costs treated?

1. They are ignored for the cost per equivalent unit calculation.
2. They are kept separate from the costs of the current period.
3. They are added to the current period costs to compute a single cost per equivalent unit. (correct answer)
4. They are subtracted from the current period costs to arrive at the net cost.

Answer: C — They are added to the current period costs to compute a single cost per equivalent unit.

Explanation. The Weighted Average method blends the costs of opening WIP with the costs incurred during the current period. These aggregated costs are then divided by the total equivalent units (including the work done in the prior period on opening WIP) to compute a single, weighted average cost per equivalent unit. Trap: Applying FIFO logic where opening WIP costs are kept separate and only current period costs are divided by current period equivalent units.

Where it goes wrong. Applying FIFO logic where opening WIP costs are kept separate and only current period costs are divided by current period equivalent units.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 15 · 2 marks · Chapter 10: Process and Operation Costing · medium

Scenario. What is the correct journal entry to record abnormal loss in process costing?

What is the correct journal entry to record abnormal loss in process costing?

1. Abnormal Loss A/c Dr. To Process A/c (correct answer)
2. Process A/c Dr. To Abnormal Loss A/c
3. Costing Profit & Loss A/c Dr. To Process A/c
4. Abnormal Loss A/c Dr. To Costing Profit & Loss A/c

Answer: A — Abnormal Loss A/c Dr. To Process A/c

Explanation. Abnormal loss is not considered a normal cost of production. Therefore, it must be removed from the Process A/c to prevent inflating the cost of good units. The entry is to debit the Abnormal Loss A/c (an expense/loss account) and credit the Process A/c (reducing the total cost to be allocated to good units). Trap: Debiting the Process A/c, which would incorrectly increase the cost of the remaining good units.

Where it goes wrong. Debiting the Process A/c, which would incorrectly increase the cost of the remaining good units.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 16 · 2 marks · Chapter 10: Process and Operation Costing · hard

Scenario. A process has an input of 10,000 units. Normal loss is 10%. Completed units are 7,500. Closing WIP is 1,000 units (50% complete). What is the equivalent unit of production for the closing WIP?

A process has an input of 10,000 units. Normal loss is 10%. Completed units are 7,500. Closing WIP is 1,000 units (50% complete). What is the equivalent unit of production for the closing WIP?

1. 1,000 units
2. 500 units (correct answer)
3. 750 units
4. 250 units

Answer: B — 500 units

Explanation. Equivalent units for closing WIP are calculated by multiplying the physical units in closing WIP by their percentage of completion. Here, 1,000 units * 50% completion = 500 equivalent units. Trap: Confusing the physical units with equivalent units, or incorrectly applying the normal loss percentage to the closing WIP calculation.

Where it goes wrong. Confusing the physical units with equivalent units, or incorrectly applying the normal loss percentage to the closing WIP calculation.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 17 · 2 marks · Chapter 10: Process and Operation Costing · medium

Scenario. Total process cost is ₹50,000 for an input of 1,000 units. Normal loss is 20%, and scrap is sold at ₹10 per unit. What is the cost per unit of the good output?

Total process cost is ₹50,000 for an input of 1,000 units. Normal loss is 20%, and scrap is sold at ₹10 per unit. What is the cost per unit of the good output?

1. ₹50.00
2. ₹55.55
3. ₹60.00 (correct answer)
4. ₹62.50

Answer: C — ₹60.00

Explanation. Step 1: Normal loss units = 20% of 1,000 = 200 units. Step 2: Scrap value = 200 * ₹10 = ₹2,000. Step 3: Net process cost = ₹50,000 - ₹2,000 = ₹48,000. Step 4: Good output = 1,000 - 200 = 800 units. Step 5: Cost per unit = ₹48,000 / 800 = ₹60.00. Trap: Forgetting to deduct the scrap value from the total cost, which would result in ₹50,000 / 800 = ₹62.50.

Where it goes wrong. Forgetting to deduct the scrap value from the total cost before dividing by the good output units.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 18 · 2 marks · Chapter 10: Process and Operation Costing · hard

Scenario. Process A completes 5,000 units at ₹40 each and transfers them to Process B. Process B incurs ₹25,000 in additional costs. Normal loss in Process B is 500 units. What is the cost per unit in Process B?

Process A completes 5,000 units at ₹40 each and transfers them to Process B. Process B incurs ₹25,000 in additional costs. Normal loss in Process B is 500 units. What is the cost per unit in Process B?

1. ₹45.00
2. ₹48.50
3. ₹52.00
4. ₹50.00 (correct answer)

Answer: D — ₹50.00

Explanation. Step 1: Cost transferred from A = 5,000 * ₹40 = ₹2,00,000. Step 2: Total cost in B = ₹2,00,000 + ₹25,000 = ₹2,25,000. Step 3: Expected output in B = 5,000 - 500 = 4,500 units. Step 4: Cost per unit = ₹2,25,000 / 4,500 = ₹50.00. Trap: Dividing the total cost by the original input (5,000 units) instead of the expected output after normal loss.

Where it goes wrong. Dividing the total cost by the original input (5,000 units) instead of the expected output after normal loss.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 19 · 2 marks · Chapter 10: Process and Operation Costing · medium

Scenario. In process costing, if materials are added at the very end of the process, the equivalent units for materials in closing WIP (which is 60% complete for conversion) will be:

In process costing, if materials are added at the very end of the process, the equivalent units for materials in closing WIP (which is 60% complete for conversion) will be:

1. 0% of physical units (correct answer)
2. 40% of physical units
3. 60% of physical units
4. full of physical units

Answer: A — 0% of physical units

Explanation. Equivalent units are based on the actual stage of completion for each cost element. If materials are introduced only at the end of the process, any units still in closing WIP have not yet received materials. Therefore, the equivalent units for materials in closing WIP will be 0% of the physical units, regardless of their completion percentage for conversion costs. Trap: Assuming that the percentage of completion for conversion costs applies uniformly to all cost elements.

Where it goes wrong. Assuming that the percentage of completion for conversion costs applies uniformly to all cost elements.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)

Question 20 · 2 marks · Chapter 10: Process and Operation Costing · hard

Scenario. Which of the following is a fundamental characteristic of industries suitable for process costing?

Which of the following is a fundamental characteristic of industries suitable for process costing?

1. Production is based on specific, identifiable customer orders.
2. Units produced are distinguishable, heterogeneous, and customized.
3. Production is continuous, and the output of one process becomes the input of another. (correct answer)
4. Costs are accumulated by individual job lots or batches.

Answer: C — Production is continuous, and the output of one process becomes the input of another.

Explanation. Process costing is designed for continuous mass production of homogeneous units where costs are accumulated by processes or departments over a period, rather than by specific jobs. The output of one process naturally flows into the next until the final product is completed. Options a, b, and d describe job-order or batch costing systems. Trap: Confusing the continuous nature of process costing with the discrete, order-based nature of job-order costing.

Where it goes wrong. Confusing the continuous nature of process costing with the discrete, order-based nature of job-order costing.

Authority. ICAI SM: Cost and Management Accounting, Chapter 10 (Process and Operation Costing)