# Mechanical Engineering Mcqs with Solved Answers & 2026 Past Papers (Page 26) | TestPrep > Practice verified Mechanical Engineering Mcqs with answers, detailed explanations, and 2026 past papers syllabus for FPSC, PPSC, NTS, CSS, and PMS exams in Pakistan. --- Official 2026 Examination Syllabus Verified Answers # Mechanical Engineering Mcqs Solved MCQs Showing 501 – 520 of **2,137** verified multiple choice questions with explanations and past paper analysis. - [Take Mechanical Engineering Mcqs Quiz](https://test-prep.blog/quiz/smart?category=mechanical-engineering-mcqs) Q501 NTS / FPSC / PPSC - [### Cast iron has _____ ?](https://test-prep.blog/mcq/cast-iron-has-1317a79e-7272-48ff-aa89-c1a49f09317e) A. high tensile strength B. its elastic limit close to the ultimate breaking strength C. high ductility D. all of the above E. none of the above Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/cast-iron-has-1317a79e-7272-48ff-aa89-c1a49f09317e) Q502 NTS / FPSC / PPSC - [### In mottled cast iron, carbon is available in _____ ?](https://test-prep.blog/mcq/in-mottled-cast-iron-carbon-is-available-in-7763f5c8-0f41-4ce3-a7de-70898ddae969) A. free form B. combined form C. nodular form D. flat form E. partly in free and partly in combined state Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/in-mottled-cast-iron-carbon-is-available-in-7763f5c8-0f41-4ce3-a7de-70898ddae969) Q503 NTS / FPSC / PPSC - [### An important property of malleable cast iron in comparison to grey cast iron is the high _____ ?](https://test-prep.blog/mcq/an-important-property-of-malleable-cast-iron-in-comparison-to-grey-cast-iron-is--54c0fce6-4ead-491c-9f81-86e19a5a09c8) A. compressive strength B. ductility C. carbon content D. hardness E. surface finish Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/an-important-property-of-malleable-cast-iron-in-comparison-to-grey-cast-iron-is--54c0fce6-4ead-491c-9f81-86e19a5a09c8) Q504 NTS / FPSC / PPSC - [### Carbon steel is _____ ?](https://test-prep.blog/mcq/carbon-steel-is-47724f86-2780-406c-847a-9269e12451ee) A. made by adding carbon in steel B. refined from cast iron C. an alloy of iron and carbon with varying quantities of phosphorus and sulphur D. extensively used for making cutting tools E. extremely brittle Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/carbon-steel-is-47724f86-2780-406c-847a-9269e12451ee) Q505 NTS / FPSC / PPSC - [### ‘Killed steels’ are those steels _____ ?](https://test-prep.blog/mcq/killed-steels-are-those-steels-0e52740f-8dc5-4e63-9765-98ae3c430390) A. which are destroyed by burning B. which after their destruction are recycled to produce fresh steel C. which are deoxidised in the ladle with silicon and aluminium D. in which carbon is completely burnt E. which have poor properties due to improper manufacturing Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/killed-steels-are-those-steels-0e52740f-8dc5-4e63-9765-98ae3c430390) Q506 NTS / FPSC / PPSC - [### The most effective inhibitor of grain growth, when added in small quantities is _____ ?](https://test-prep.blog/mcq/the-most-effective-inhibitor-of-grain-growth-when-added-in-small-quantities-is-9ade1778-b7ec-4b71-96b5-e8d3f7f0a642) A. carbon B. vanadium C. manganese D. cobalt E. copper Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/the-most-effective-inhibitor-of-grain-growth-when-added-in-small-quantities-is-9ade1778-b7ec-4b71-96b5-e8d3f7f0a642) Q507 NTS / FPSC / PPSC - [### Maximum percentage of carbon in ferrite is _____ ?](https://test-prep.blog/mcq/maximum-percentage-of-carbon-in-ferrite-is-0f108061-e178-4c6f-82db-aceff4ec1241) A. 0.025% B. 0.06% C. 0.1% D. 0.25% E. 0.8%. Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/maximum-percentage-of-carbon-in-ferrite-is-0f108061-e178-4c6f-82db-aceff4ec1241) Q508 NTS / FPSC / PPSC - [### Corrosion resistance of steel is increased by addition of _____ ?](https://test-prep.blog/mcq/corrosion-resistance-of-steel-is-increased-by-addition-of-9cfe5ba9-0bb0-4a30-bff4-8e4779cb75f3) A. chromium and nickel B. sulphur, phosphorus, lead C. vanadium, aluminium D. tungsten, molybdenum, vanadium, chromium E. zinc Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/corrosion-resistance-of-steel-is-increased-by-addition-of-9cfe5ba9-0bb0-4a30-bff4-8e4779cb75f3) Q509 NTS / FPSC / PPSC - [### Railway rails are normally made of _____ ?](https://test-prep.blog/mcq/railway-rails-are-normally-made-of-bbef8907-ddb6-4fec-88ee-ca7dd119b853) A. mild steel B. alloy steel C. high carbon D. tungsten steel E. cast iron steel Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/railway-rails-are-normally-made-of-bbef8907-ddb6-4fec-88ee-ca7dd119b853) Q510 NTS / FPSC / PPSC - [### Pick up the wrong statement Nickel and chromium in steel help in _____ ?](https://test-prep.blog/mcq/pick-up-the-wrong-statement-nickel-and-chromium-in-steel-help-in-f4b47f4f-b676-4481-9347-def551b12531) A. providing corrosion resistance B. improving machining properties C. providing high strength at elevated temperatures D. raising the elastic limit E. improving the resilience and ductility Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/pick-up-the-wrong-statement-nickel-and-chromium-in-steel-help-in-f4b47f4f-b676-4481-9347-def551b12531) Q511 NTS / FPSC / PPSC - [### Eutectoid steel contains following percentage of carbon _____ ?](https://test-prep.blog/mcq/eutectoid-steel-contains-following-percentage-of-carbon-90dc71c7-1ed6-45f9-8982-abbe610f9ff4) A. 0.02% B. 0.3% C. 0.63% D. 0.8% E. 1.2%. Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/eutectoid-steel-contains-following-percentage-of-carbon-90dc71c7-1ed6-45f9-8982-abbe610f9ff4) Q512 NTS / FPSC / PPSC - [### Basic constituents of Monel metal are _____ ?](https://test-prep.blog/mcq/basic-constituents-of-monel-metal-are-446e8317-29a1-43b6-acf6-f11050a0af7d) A. nickel, copper B. nickel, molybdenum C. zinc, tin, lead D. nickel, lead and tin E. none of the above Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/basic-constituents-of-monel-metal-are-446e8317-29a1-43b6-acf6-f11050a0af7d) Q513 NTS / FPSC / PPSC - [### Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is _____ ?](https://test-prep.blog/mcq/surveying-tapes-are-made-of-a-material-having-low-coefficient-of-expansion-and-e-a98e1493-19f0-4dfa-8528-9b59ba410ee6) A. silver metal B. duralumin C. Hastelloy D. monel metal E. invar Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/surveying-tapes-are-made-of-a-material-having-low-coefficient-of-expansion-and-e-a98e1493-19f0-4dfa-8528-9b59ba410ee6) Q514 NTS / FPSC / PPSC - [### An engineer’s hammer is made of _____ ?](https://test-prep.blog/mcq/an-engineers-hammer-is-made-of-5b6b7c91-d609-4d32-9c25-65de30fb3ef4) A. cast iron B. forged steel C. mild steel D. high carbon steel E. H.S.S Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/an-engineers-hammer-is-made-of-5b6b7c91-d609-4d32-9c25-65de30fb3ef4) Q515 NTS / FPSC / PPSC - [### By severely deforming a metal in a particular direction it becomes _____ ?](https://test-prep.blog/mcq/by-severely-deforming-a-metal-in-a-particular-direction-it-becomes-3a1a4980-90e8-4107-939e-5d44ac128e65) A. ductile B. malleable C. homogeneous D. isotropic E. anisotropic Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/by-severely-deforming-a-metal-in-a-particular-direction-it-becomes-3a1a4980-90e8-4107-939e-5d44ac128e65) Q516 NTS / FPSC / PPSC - [### Cyaniding is the process of _____ ?](https://test-prep.blog/mcq/cyaniding-is-the-process-of-4a996a8a-eda0-465f-81ab-2cfc61ca7e7b) A. dipping steel in cyanide bath B. reacting steel surface with cyanide salts C. adding carbon and nitrogen by heat treatment of steel to increase its surface hardness D. obtaining cyanide salts E. making corrosion resistant steel Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/cyaniding-is-the-process-of-4a996a8a-eda0-465f-81ab-2cfc61ca7e7b) Q517 NTS / FPSC / PPSC - [### The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as _____ ?](https://test-prep.blog/mcq/the-loss-of-strength-in-compression-with-simultaneous-gain-in-strength-in-tensio-d31be250-70a9-4ed2-845a-9d945efac4a7) A. hysteresis B. creep C. visco elasticity D. Boeschinger effect E. inelasticity Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/the-loss-of-strength-in-compression-with-simultaneous-gain-in-strength-in-tensio-d31be250-70a9-4ed2-845a-9d945efac4a7) Q518 NTS / FPSC / PPSC - [### The surface hardness of the following order is achieved by nitriding operation _____ ?](https://test-prep.blog/mcq/the-surface-hardness-of-the-following-order-is-achieved-by-nitriding-operation-a2bfc394-b0d7-40e0-9378-5ca92f187197) A. 600 VPN B. 1500 VPN C. 1000 to 1100 VPN D. 250 VPN E. 2000 VPN Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/the-surface-hardness-of-the-following-order-is-achieved-by-nitriding-operation-a2bfc394-b0d7-40e0-9378-5ca92f187197) Q519 NTS / FPSC / PPSC - [### Weld decay is the phenomenon found with _____ ?](https://test-prep.blog/mcq/weld-decay-is-the-phenomenon-found-with-e59ffc70-eaaf-41af-9afa-dc17f0ad3d4b) A. cast iron B. mild steel C. non-ferrous materials D. wrought iron E. stainless steel Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/weld-decay-is-the-phenomenon-found-with-e59ffc70-eaaf-41af-9afa-dc17f0ad3d4b) Q520 NTS / FPSC / PPSC - [### Hardness of upper bainite (acicular structure) is about _____ ?](https://test-prep.blog/mcq/hardness-of-upper-bainite-acicular-structure-is-about-8819ab9a-7605-4979-a255-db7f4c53abbd) A. RC 65 B. RC 48 C. RC 57 D. RC 80 E. RC 32. Reveal Answer - [View Full Details & Discussion →](https://test-prep.blog/mcq/hardness-of-upper-bainite-acicular-structure-is-about-8819ab9a-7605-4979-a255-db7f4c53abbd) - [Previous Page](https://test-prep.blog/categories/mechanical-engineering-mcqs?page=25)Page 26 of 107 - [Next Page](https://test-prep.blog/categories/mechanical-engineering-mcqs?page=27) Editorial Analysis & Exam Strategy ## Mechanical Engineering Mcqs Preparation Guide for Competitive Exams The Mechanical Engineering Mcqs section constitutes one of the highest-weightage modules across major competitive recruiting tests conducted by FPSC, PPSC, SPSC, KPPSC, BPSC, NTS, and the CSS Screening (MPT). Candidates who systematically practice verified solved past questions attain a statistically verified 42% higher score on negative-marking objective papers. #### FPSC (Federal Public Service Commission) 20% - 50% of General Ability Paper Questions emphasize analytical depth, conceptual definitions, and contemporary developments. #### PPSC (Punjab Public Service Commission) 15% - 25% of 100-mark One-Paper MCQs Strong focus on direct factual accuracy, past paper repetitions, and textbook fundamentals. #### NTS (National Testing Service) 25% - 35% of GAT & NAT Tests Strict timing constraints (approx. 50 seconds per MCQ). Rapid recall is critical. #### CSS & PMS Compulsory 20 MCQs (20 Marks) in each Compulsory Subject Qualifying threshold determinant. Correct answers in objective sections secure merit ranking. ### Proven Study Methodology Topic-Wise Mastery: Begin by solving questions in batches of 20 with immediate answer verification. Negative Marking Shield: In competitive exams, guessing indiscriminately carries a 0.25 mark penalty. Practice identifying questions where you can eliminate 2 incorrect distractors before attempting. Smart Spaced Repetition: Use our Bookmark and Mistake Revision engines to re-test incorrectly answered questions within 48 hours to lock them into long-term memory. Timed Speed Runs: Attempt the Daily Study Challenge under timed conditions to build test-day cognitive endurance. ### Frequently Asked Questions about Mechanical Engineering Mcqs #### How many questions are included in the Mechanical Engineering Mcqs repository? Our repository contains verified multiple choice questions for Mechanical Engineering Mcqs, regularly curated and cross-referenced with official past papers from 2018 to 2026. #### Are these Mechanical Engineering Mcqs MCQs relevant for 2026 exams? Yes, all questions have been reviewed and updated to conform to the latest 2026 syllabus announcements issued by FPSC, PPSC, NTS, and provincial testing boards. #### Does Mechanical Engineering Mcqs practice include answer explanations? Yes, each question features verified correct answers with explanatory context, historical references, and verified citations. #### Can I practice Mechanical Engineering Mcqs questions in interactive quiz mode? Yes, click 'Take Mechanical Engineering Mcqs Quiz' to launch our Smart Adaptive practice engine, customize question counts, and track your accuracy score in real-time. --- *Source: https://test-prep.blog/categories/mechanical-engineering-mcqs?page=26* *Format: Markdown for Agents (Content Negotiation: text/markdown)*