Practice this RRB ALP CBT 2 mock test with 100 exam-level questions covering Mathematics, Reasoning, Basic Science, and Engineering concepts.
Table of Contents
RRB ALP CBT 2 Mock Test: 100 Questions for Part A Preparation
Introduction
RRB ALP CBT 2 examination evaluates whether candidates possess the mathematical ability, reasoning skills and technical understanding required for railway operations. Unlike a basic knowledge test, CBT 2 requires candidates to apply concepts accurately while working under strict time limits.
The official RRB syllabus divides CBT 2 into Part A and Part B. Part A covers Mathematics, General Intelligence and Reasoning, and Basic Science and Engineering. Part B is a qualifying trade-specific test based on the candidate’s technical qualification or selected trade. This mock test contains 100 questions focused on Part A because the syllabus for Part B changes according to the candidate’s trade.
Candidates should attempt the test in one uninterrupted sitting. A realistic practice session helps measure calculation speed, concept retention, question-selection ability and accuracy under pressure.
Importance of the CBT 2 Part A Subjects
Mathematics
Mathematics questions test whether candidates can interpret numerical information and reach accurate answers efficiently. Important topics include percentages, ratio and proportion, profit and loss, time and work, pipes and cisterns, speed and distance, algebra, geometry, trigonometry, mensuration, averages and elementary statistics.
These questions are rarely difficult because of lengthy formulas. The actual challenge is selecting the correct method quickly and avoiding calculation mistakes.
General Intelligence and Reasoning
Reasoning evaluates a candidate’s ability to recognise relationships, analyse statements and make logical decisions. Common areas include analogies, number series, coding-decoding, syllogisms, Venn diagrams, directions, blood relations, classification, data sufficiency and statement-based reasoning.
This section can improve the overall score because most questions do not require lengthy calculations. However, candidates must read every condition carefully.
Basic Science and Engineering
This section is especially important for ALP candidates because it connects scientific principles with technical and workplace applications. Questions may cover engineering drawing, measurements, density, work, energy, power, motion, temperature, electricity, simple machines, occupational safety, environmental awareness and basic computer knowledge.
Understanding the principle behind a formula is more useful than memorising isolated definitions.
Types of Questions Asked in the Examination
The RRB ALP CBT 2 paper generally contains a mixture of direct conceptual questions, numerical problems and application-based situations.
Mathematics questions may require candidates to calculate effective discounts, combined work rates, average speed, areas, volumes or compound interest. Some problems contain information that must first be converted into a usable form, such as converting kilometres per hour into metres per second.
Reasoning questions may ask candidates to complete a pattern, identify a valid conclusion, determine a relationship or arrange events in a logical order. Statement and assumption questions require attention because the answer must be based only on the information provided.
Basic Science and Engineering questions often describe practical situations. Candidates may be asked to calculate electrical power, choose a suitable measuring instrument, identify a safety procedure or determine how a machine behaves when its dimensions change.
A strong preparation plan must therefore include theory, numerical practice and practical application.
Practical Preparation Strategy
Begin by dividing the syllabus into smaller topic groups. For Mathematics, revise one arithmetic topic and one advanced topic each day. For example, combine percentages with geometry or time and work with trigonometry. This prevents preparation from becoming limited to familiar arithmetic chapters.
Maintain a compact formula notebook. Record formulas for compound interest, work rates, average speed, mensuration, trigonometric ratios, electrical power, resistance combinations, mechanical advantage and efficiency. Review the notebook regularly rather than attempting to memorise everything immediately.
For Reasoning, practise questions in timed sets. After each set, classify errors into three categories: misunderstanding the condition, choosing the wrong method or making a careless observation. This analysis is more valuable than merely checking the final score.
For Basic Science and Engineering, connect every concept with an example. While studying resistance, calculate how resistance changes when the length or area of a wire changes. While studying power, compare electrical power with mechanical power. During safety preparation, learn why a procedure is followed rather than memorising the name alone.
Attempt full-length mock tests only after completing topic-wise practice. During the first few mocks, focus on accuracy. Once accuracy becomes stable, reduce the time taken per section. Mark questions that require lengthy calculation and return to them after completing easier questions.
After every mock, prepare an error log containing the question topic, reason for the mistake and correct method. Reattempt incorrect questions after two or three days without looking at the previous solution.
Common Mistakes Candidates Make
One common mistake is applying the arithmetic mean formula to an average-speed problem involving equal distances. In such cases, the harmonic-mean relationship is required.
Candidates also lose marks by ignoring unit conversion. Train, electricity and measurement questions frequently use different units. Convert all quantities before substituting values into a formula.
In Reasoning, candidates sometimes add personal assumptions to a statement. Conclusions must follow from the given information, not from what usually happens in real life.
Technical questions are often answered through memorised keywords without understanding the operating principle. This becomes risky when the question presents the same concept in an unfamiliar situation.
Another serious mistake is spending too much time on one difficult question. A controlled attempt strategy is usually more effective than solving questions strictly in numerical order.
Benefits of Regular MCQ Practice
Regular MCQ practice develops faster recall and improves the ability to distinguish between closely related options. It also reveals weak chapters that may not be visible during passive reading.
Timed practice trains candidates to calculate, analyse and decide under examination conditions. Repeated exposure to mixed questions improves mental switching between Mathematics, Reasoning and technical concepts.
Mock tests are most beneficial when candidates review every incorrect answer, including questions answered through guesswork. The objective is not only to increase the number of attempts but to improve the reliability of each attempt.
20 Sample Questions with Detailed Explanations
1. Evaluate: 48 / 6 x (5 – 3) + 7.
Options: 21, 22, 23, 24
Correct Answer: 23
Explanation: First solve the bracket: 5 – 3 = 2. Division and multiplication have equal precedence and are performed from left to right. Therefore, 48 / 6 = 8 and 8 x 2 = 16. Finally, 16 + 7 = 23.
2. An item costing Rs. 1,250 is marked 20% above its cost price and sold at a discount of 10%. What is the profit percentage?
Options: 6%, 8%, 10%, 12%
Correct Answer: 8%
Explanation: The marked price is 1,250 x 1.20 = Rs. 1,500. After a 10% discount, the selling price becomes 1,500 x 0.90 = Rs. 1,350. Profit is Rs. 100. Therefore, profit percentage is 100 / 1,250 x 100 = 8%.
3. A can complete a job in 12 days and B in 18 days. How long will they take together?
Options: 6.5 days, 7.2 days, 7.5 days, 8 days
Correct Answer: 7.2 days
Explanation: A’s one-day work is 1/12 and B’s is 1/18. Their combined rate is 1/12 + 1/18 = 5/36. The required time is the reciprocal of the combined rate, which is 36/5 = 7.2 days.
4. A vehicle travels equal distances at 60 km/h and 40 km/h. Find its average speed.
Options: 45 km/h, 48 km/h, 50 km/h, 52 km/h
Correct Answer: 48 km/h
Explanation: For equal distances, average speed is 2ab / (a + b). Therefore, the average speed is 2 x 60 x 40 / 100 = 48 km/h. Taking the simple average of 60 and 40 would be incorrect.
5. Find the volume of a cylinder with radius 3.5 cm and height 10 cm.
Options: 350, 365, 385, 420 cubic cm
Correct Answer: 385 cubic cm
Explanation: Volume of a cylinder is pi r²h. Using pi = 22/7, the volume is 22/7 x 3.5 x 3.5 x 10. Simplifying the expression gives 385 cubic centimetres.
6. What is the smaller angle between the hands of a clock at 3:40?
Options: 110, 120, 125, 130 degrees
Correct Answer: 130 degrees
Explanation: The minute hand is at 40 x 6 = 240 degrees. The hour hand is at 3 x 30 + 40 x 0.5 = 110 degrees. The difference is 240 – 110 = 130 degrees.
7. Find the next number: 3, 8, 18, 38, 78, __.
Options: 148, 152, 156, 158
Correct Answer: 158
Explanation: Each term is obtained by multiplying the previous term by 2 and adding 2. Thus, 78 x 2 + 2 = 158.
8. A is the sister of B, and B is the father of C. How is A related to C?
Options: Maternal aunt, Paternal aunt, Sister, Grandmother
Correct Answer: Paternal aunt
Explanation: B is C’s father. A is B’s sister. The sister of a person’s father is that person’s paternal aunt.
9. Out of 80 technicians, 45 know electrical maintenance, 35 know mechanical maintenance and 20 know both. How many know neither?
Options: 15, 20, 25, 30
Correct Answer: 20
Explanation: The number knowing at least one skill is 45 + 35 – 20 = 60. The overlap is subtracted because it was counted twice. Therefore, the number knowing neither is 80 – 60 = 20.
10. Determine x using: I. x + y = 18. II. x – y = 4.
Correct Answer: Both statements together are sufficient.
Explanation: Neither equation alone gives a unique value of x. Adding both equations gives 2x = 22, so x = 11. Therefore, both statements are required.
11. If 3 and 5 produce 16, and 4 and 6 produce 25, what will 7 and 8 produce?
Options: 54, 55, 56, 57
Correct Answer: 57
Explanation: The pattern is the product of the two numbers plus 1. Thus, 3 x 5 + 1 = 16 and 4 x 6 + 1 = 25. Therefore, 7 x 8 + 1 = 57.
12. No conductor is an insulator. Some cables are conductors. Which conclusion follows?
Correct Answer: Some cables are not insulators.
Explanation: The cables identified as conductors cannot be insulators because the first premise completely separates conductors from insulators. However, it cannot be concluded that every cable is not an insulator.
13. Which line represents hidden edges in an engineering drawing?
Options: Thick continuous, Thin chain, Thin dashed, Freehand
Correct Answer: Thin dashed line
Explanation: A hidden edge is not directly visible from the selected viewing direction. Engineering drawing conventions represent such edges using thin, evenly spaced dashed lines.
14. A micrometer has a pitch of 0.5 mm and 50 circular-scale divisions. Find its least count.
Options: 0.1, 0.05, 0.01, 0.005 mm
Correct Answer: 0.01 mm
Explanation: Least count equals pitch divided by the number of circular-scale divisions. Therefore, 0.5 / 50 = 0.01 mm.
15. A metal has density 7,800 kg/m³ and volume 0.002 m³. Find its mass.
Options: 7.8, 12.6, 15.6, 17.8 kg
Correct Answer: 15.6 kg
Explanation: Density equals mass divided by volume. Therefore, mass equals density multiplied by volume: 7,800 x 0.002 = 15.6 kg.
16. Find the kinetic energy of a 4 kg object moving at 6 m/s.
Options: 24, 36, 48, 72 J
Correct Answer: 72 J
Explanation: Kinetic energy is one-half mv². Substituting the values gives 1/2 x 4 x 6² = 2 x 36 = 72 joules.
17. Two trains move in opposite directions at 54 km/h and 72 km/h. Find their relative speed.
Options: 30, 35, 40, 45 m/s
Correct Answer: 35 m/s
Explanation: For opposite directions, add the speeds: 54 + 72 = 126 km/h. Converting to metres per second gives 126 x 5/18 = 35 m/s.
18. Find the equivalent resistance of 6-ohm and 3-ohm resistors connected in parallel.
Options: 2, 3, 4.5, 9 ohms
Correct Answer: 2 ohms
Explanation: For parallel resistors, 1/R = 1/6 + 1/3. Since 1/3 equals 2/6, the total is 3/6 or 1/2. Therefore, R = 2 ohms.
19. A wire has resistance R. Its length is doubled and area is halved. Find its new resistance.
Options: R, 2R, 4R, 8R
Correct Answer: 4R
Explanation: Resistance is directly proportional to length and inversely proportional to cross-sectional area. Doubling the length multiplies resistance by 2, while halving the area multiplies it by another 2. The total change is 2 x 2 = 4R.
20. A 20-tooth gear rotating at 300 rpm drives a 60-tooth gear. Find the speed of the driven gear.
Options: 60, 100, 150, 900 rpm
Correct Answer: 100 rpm
Explanation: Gear speed is inversely proportional to the number of teeth. Therefore, driver teeth x driver speed equals driven teeth x driven speed. The driven speed is 20 x 300 / 60 = 100 rpm.
Practice the Complete RRB ALP CBT 2 Mock Test
Attempt all 100 questions under timed conditions and avoid checking answers during the test. After completing the paper, calculate your accuracy separately for Mathematics, Reasoning, and Basic Science and Engineering.
Review every incorrect or uncertain answer, revise the associated concept and reattempt the question later. Consistent analysis of mock-test performance will help improve speed, accuracy and topic selection for the actual RRB ALP CBT 2 examination.