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100+ Free Karnataka SSLC Elements of Mechanical Engineering IV — JTS (KSEAB) Practice Questions

Karnataka School Examination and Assessment Board (KSEAB) SSLC Class 10 Junior Technical School (JTS) Elements of Mechanical Engineering IV (paper code 52 / 52E) practice questions are available now; exam metadata is being verified.

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Key Facts: Karnataka SSLC Elements of Mechanical Engineering IV — JTS (KSEAB) Exam

52 / 52E

KSEAB SSLC JTS Elements of Mechanical Engineering-IV paper code

KSEAB / KSEEB SSLC model and public paper listings

JTS Class 10

Junior Technical School mechanical theory pathway subject

KSEAB SSLC JTS subject lists and timetable notices

Theory + practical/oral

Official assessment includes written theory and JTS practical/oral components

KSEAB SSLC timetable notices for JTS students

~30–33%

Commonly reported minimum per-subject pass mark range

KSEAB pass criteria reporting (confirm current circular)

Mixed written paper

Board 52E theory papers use objective + subjective items, not pure MCQ

KSEAB JTS Elements of Mechanical Engineering-IV model / public papers

English MCQ adaptation

This free local bank is theory practice only — not a practical/oral substitute

OpenExamPrep practice policy

KSEAB SSLC JTS Elements of Mechanical Engineering IV (52E) is a Class 10 technical subject with written theory plus practical/oral assessment. Pass is commonly ~30–33% per subject plus aggregate rules as notified. Fees are paid through schools. This free 2026 bank is an English theory MCQ study adaptation — not a practical/oral substitute or official paper simulation.

Sample Karnataka SSLC Elements of Mechanical Engineering IV — JTS (KSEAB) Practice Questions

Try these sample questions to test your Karnataka SSLC Elements of Mechanical Engineering IV — JTS (KSEAB) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In mechanical engineering, cast iron is classified primarily as a:
A.Thermosetting plastic
B.Ceramic oxide
C.Ferrous metal
D.Non-ferrous metal
Explanation: Cast iron is an iron–carbon alloy and is therefore a ferrous metal. Non-ferrous metals exclude iron as the base; ceramics and plastics are non-metallic materials.
2Which property describes a metal’s ability to be drawn into thin wires without fracture?
A.Malleability
B.Ductility
C.Hardness
D.Brittleness
Explanation: Ductility is the ability of a material to undergo large plastic deformation in tension, as when drawn into wire. Brittleness is the opposite; hardness resists indentation; malleability concerns hammering/rolling into sheets.
3Which metal is non-ferrous?
A.Mild steel
B.High-carbon steel
C.Cast iron
D.Aluminium
Explanation: Aluminium does not have iron as its base element, so it is non-ferrous. Mild steel, cast iron, and high-carbon steel are iron-based ferrous materials.
4Hardness of a metal is best described as its resistance to:
A.Conducting electricity
B.Permanent surface indentation or scratching
C.Being magnetised
D.Being melted by heat
Explanation: Hardness is resistance to permanent local deformation such as indentation or scratching. Melting relates to thermal behaviour; magnetism and electrical conductivity are different physical properties.
5Mild steel typically has a carbon content of roughly:
A.About 10% to 12%
B.About 0.15% to 0.30%
C.Zero carbon by definition
D.About 2.5% to 4%
Explanation: Mild (low-carbon) steel commonly contains about 0.15–0.30% carbon. Cast irons typically have much higher carbon (around 2–4%). Ten-percent carbon is not a normal steel range; pure iron is not called mild steel.
6Which property allows a metal to be hammered into thin sheets without cracking?
A.Elasticity
B.Brittleness
C.Malleability
D.Toughness only
Explanation: Malleability is the ability to deform permanently under compressive loads such as hammering or rolling into sheets. Elasticity is recovery after load removal; brittleness implies little plastic deformation; toughness is energy absorption before fracture.
7Brass is an alloy primarily of:
A.Iron and carbon only
B.Copper and zinc
C.Aluminium and silicon only
D.Lead and tin only
Explanation: Brass is a copper–zinc alloy. Iron–carbon alloys are steels/cast irons; aluminium–silicon alloys are common casting alloys of aluminium; lead–tin alloys are solders.
8Which material is generally preferred for machine beds because of its high compressive strength, good damping, and castability?
A.Rubber
B.Glass
C.Cast iron
D.Soft pure lead
Explanation: Cast iron is widely used for machine tool beds and frames because it casts well into complex shapes, has good compressive strength, and damps vibration. Rubber, glass, and soft lead are unsuitable structural bed materials.
9Tensile strength of a material is the maximum tensile stress it can withstand before:
A.It loses all electrical conductivity
B.Any elastic stretch occurs
C.It becomes a liquid
D.Fracture (or necking to failure in the tension test sense used at this level)
Explanation: Tensile strength (ultimate tensile strength in standard tension testing) is the maximum stress in tension before failure. Elastic stretch begins at much lower stresses; melting and conductivity are separate phenomena.
10Which of the following is a ferrous alloy commonly used for cutting tools after heat treatment because of its high hardness and wear resistance?
A.Lead-tin solder
B.Soft aluminium
C.High-speed steel (HSS)
D.Pure copper
Explanation: High-speed steel is a tool steel alloy that retains hardness at elevated cutting temperatures and is widely used for drills, taps, and lathe tools. Soft copper, aluminium, and solder lack the hardness needed for cutting tools.

About the Karnataka SSLC Elements of Mechanical Engineering IV — JTS (KSEAB) Practice Questions

Verified exam format metadata for Karnataka School Examination and Assessment Board (KSEAB) SSLC Class 10 Junior Technical School (JTS) Elements of Mechanical Engineering IV (paper code 52 / 52E) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.