Description : Polystyrene is a __________ plastic at room temperature. (A) Ductile (B) Brittle (C) Malleable (D) None of these
Last Answer : (B) Brittle
Description : Wrought iron is (A) High carbon iron (B) Highly resistance to acid corrosion (C) Malleable & ductile; and hence is used for chain links, hooks & couplings (D) An alloy of iron, chromium & carbon
Last Answer : (C) Malleable & ductile; and hence is used for chain links, hooks & couplings
Description : Cast iron is a __________ material. (A) Brittle (B) Ductile (C) Tough (D) Malleable
Last Answer : (A) Brittle
Description : Steel produced from phosphatic iron is __________ in nature. (A) Malleable (B) Ductile (C) Brittle (D) Tough
Last Answer : (C) Brittle
Description : A material capable of undergoing large permanent deformation, when subjected to compression is termed as (A) Malleable (B) Ductile (C) Brittle (D) None of these
Last Answer : (A) Malleable
Description : Wrought iron is not (A) Ductile & resistant to corrosion/rusting (B) Weldable easily (C) Having uniform strength in all directions (D) Having maximum tensile strength along the lines of slag distribution
Last Answer : Option C
Description : Synthetic rubber (A) Deforms, if stretched to double of its original dimension (B) Is brittle at low temperature (C) Is softer at higher temperature (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases
Last Answer : (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases
Description : The 'transition temperature' for ductile to brittle behaviour of steel increases with increase in the __________ content in steel. (A) Carbon (B) Manganese (C) Both 'a' nor 'b' (D) Neither 'a' nor 'b'
Last Answer : (A) Carbon
Description : __________ iron is produced by the annealing of white cast iron. (A) Malleable (B) Nodular (C) Ductile (D) Grey
Description : __________ test is the appropriate test to determine whether a material is ductile or brittle. (A) Impact (B) Cupping (C) Hardness (D) Tensile
Last Answer : (A) Impact
Description : Mild steel is (A) A low carbon steel (0.05 to 0.3% carbon) (B) Highly resistant to corrosion (as much as stainless steel) (C) A high carbon steel (0.5 to 1.5% carbon) (D) Very poor in strength & ductility
Last Answer : (A) A low carbon steel (0.05 to 0.3% carbon)
Description : Most common stainless steel type 316, which is highly resistant to corrosion contains (A) 16-13% Cr 10-14% Ni and 2-3% Mo (B) 20-22% Cr, and 8-10% Ni (C) 2-4% Cr, 22% NI and 2-4% Mo (D) None of these
Last Answer : (A) 16-13% Cr 10-14% Ni and 2-3% Mo
Description : Hastelloy C is a good material of construction in chemical process industry, since it is (A) Highly corrosion resistant and is readily fabricated (B) Relatively inexpensive although it can be ... most alkalis, particularly because of its copper content (D) Light and resists attack by acids
Last Answer : (D) Light and resists attack by acids
Description : . Plasticisers are added to paints to (A) Make it corrosion resistant (B) Make glossy surface (C) Give elasticity & prevent cracking of the film (D) Increase atmospheric oxidation
Last Answer : (C) Give elasticity & prevent cracking of the film
Description : Pick out the wrong statement. (A) Metal/alloys having hexagonal crystal lattice structure are less malleable than those having cubic crystal lattice structure (B) Metal/alloys having body centred cubic ... D) Both ferritic & austenitic stainless steel has a face centred cubic (fcc) crystal structure
Last Answer : (C) Tungsten has a body centred cubic (bcc) crystal lattice structure
Description : Increasing sulphur content in pig iron tends to make it (A) Soft (B) Hard (C) Tough (D) Ductile & malleable
Last Answer : Option B
Description : White cast iron is not (A) Malleable (B) Whitish in color (C) Brittle (D) Strong and hard
Description : Very high sulphur in pig iron makes (A) Its casting unsound (B) Its hard and machinable (C) Its brittle and malleable (D) All (A), (B) & (C)
Last Answer : (A) Its casting unsound
Description : Stone ware pipes are A. Highly resistant to sulphide corrosion B. Highly impervious C. Hydraulically efficient because of their smooth interior surface D. Especially suited to pressure pipes
Last Answer : ANS: D
Description : Asbestos pipes are (A) Light in weight and easy to transport (B) Highly resistant to corrosion (C) High flexible to accommodate deflection upto 12° (D) All the above
Last Answer : (D) All the above
Description : What Is Ductile-brittle Transition Temperature?
Last Answer : It is the temperature below which the tendency of a material to fracture increases rather than forming. Below this temperature the material loses its ductility. It is also called Nil Ductility Temperature
Description : What type of solid is ductile and malleable?
Last Answer : Several metals are ductile and malleable.
Description : Which of the following statements about the physical properties of metal is not correct? (a) All metals are solid except mercury (b) Most metals are hard except sodium and potassium (c) Metals are not malleable (d) Most metals are ductile
Last Answer : Ans:(c)
Description : (3) reflection of light due to the presence of free electrons Explanation: Lustre (or luster) is the way light interacts with the surface of a crystal, rock, or mineral. The word ... conductivity, and high density. Typically they are malleable and ductile, deforming -under stress without cleaving.
Last Answer : Cloud is a colloidal dispersion of – (1) Air in a dispersion medium of water (2) Fog in a dispersion medium of water (3) Mist in a dispersion medium of air (4) Water drops in a dispersion medium of air
Description : If a metal can be drawn into wires relatively easily it is called: (1) malleable (2) ductile (3) extractive (4) tactile
Last Answer : (2) ductile Explanation: Ductility is a physical property of a material associated with the ability to be hammered thin or stretched into wire without breaking.
Description : The most malleable, ductile low resistivity material is (A) Copper. (B) Aluminium. (C) Silver. (D) Iron.
Last Answer : (C) Silver.
Description : If a metal can be drawn into wires relatively easily it is called: w) malleable x) ductile y) extractive z) tactile
Last Answer : ANSWER: X -- DUCTILE
Description : . A material capable of undergoing large permanent deformation, when subjected to tension is termed as (A) Friable (B) Ductile (C) Brittle (D) None of these
Last Answer : (B) Ductile
Description : A dense structure of grinding wheel is not used for the (A) Ductile material (B) Hard materials (C) Brittle materials (D) Finishing cuts
Last Answer : A) Ductile material
Description : The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as (A) Rigid (B) Tough (C) Ductile (D) Plastic
Description : Presence of even 0.005% of __________ in copper makes it highly brittle, rendering it useless for wire-drawing. (A) Oxygen (B) Arsenic (C) Antimony (D) Bismuth
Last Answer : (D) Bismuth
Description : 'Shock-absorbers are usually made of steel as it – (1) is not brittle (2) has lower elasticity (3) has higher elasticity (4) has no ductile property
Last Answer : (3) has higher elasticity Explanation: A shock absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. Steel is an alloy made by combining iron and other elements, the most common of these being carbon.
Description : Which theories of failure are used for (a) ductile materials, and (B) brittle materials ?
Last Answer : For ductile materials, theories of failure used are maximum shear stress theory, and maximum energy of distortion theory; while for brittle materials, theory of maximum principal stress, and maximum strain are used.
Description : List at least two factors that promote transition from ductile to brittle fracture.
Last Answer : Manner of loading, and the rate of loading promote transition from ductile to brittle frac¬ture. A machine member may have ductile failure under static loading but may fail in brittle fashion when the ... testing speed but if load is applied at a high velocity then failure may be brittle.
Description : Substances that elongate considerably and undergo plastic deformation before they break are known as A. brittle substances B. breakable substances C. ductile substances D. elastic substances
Last Answer : ductile substances
Description : In which of the following case stress concentration factor is ignored? a) Ductile material under static load b) Ductile material under fluctuating load c) Brittle material under static load
Last Answer : a) Ductile material under static load
Description : Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None
Last Answer : (a) Ductile materials
Last Answer : (b) Brittle materials
Description : Maximum principal strain theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None
Description : Maximum shear stress theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials
Description : Maximum principal stress theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None
Description : Pick up the correct statement from the following: (A) A ductile material has large plastic zone (B) A brittle material has no plastic zone (C) A rigid material has no plastic zone (D) All the above
Last Answer : All the above
Description : Which Theories Of Failure Are Used For? (a) Ductile Materials (b) Brittle Materials?
Last Answer : For ductile materials, theories of failure used are maximum shear stress theory and maximum energy of distortion theory; For brittle materials, the theory of maximum principal stress and maximum strain are used.
Description : List At Least Two Factors That Promote The Transition From Ductile To Brittle Fracture?
Last Answer : The manner of loading and the rate of loading promote the transition from ductile to brittle fracture. A machine member may have ductile failure under static loading but may fail in brittle fashion when the ... testing speed, but if the load is applied at a high velocity then failure may be brittle.
Description : Distinguish Between Brittle Fracture And Ductile Fracture?
Last Answer : In brittle fracture, crack growth is up to a small depth of the material. In ductile fracture large amount of plastic deformation is present to a higher depth.
Description : The material in which large deformation is possible before absolute failure by rupture takes place, is known as (a) Ductile (b) Plastic (c) Brittle (d) Elastic
Last Answer : Ductile
Description : Charpy impact tests showing a rough torn surface after the completed test, this would indicate which type of failure? a) Fatigue b) Ductile c) Fatigue to ductile d) Brittle
Last Answer : b) Ductile
Description : The substance which undergo plastic deformation until break is a) Brittle b) Ductile c) Hard d) Soft
Last Answer : d) Soft
Description : The substance which break just after elastic limit: a) Ductile b) Brittle c) Soft d) Hard
Last Answer : d) Hard
Description : Which stress strain curve is more steep (a) For a ductile material (b) For a brittle material (c) For a pure metal (d) None
Last Answer : b) For a brittle material