GATE CE 2025 Set 1 — Question 24
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Transportation Engineering → Bitumen & Mix Design → Ductility Test
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Question
In the context of testing bitumen, which one of the following statements is FALSE:
Correct answer
(C) Softening point is measured in the units of time
Solution
Let's evaluate each statement:
(A) True: Penetration is measured as the depth (in units of mm) to which a standard needle penetrates a bitumen sample under specified conditions.
(B) True: The softening point of bitumen is determined using the Ring and Ball apparatus.
(C) False: The softening point is the temperature () at which the bitumen attains a particular degree of softening. It is not measured in units of time.
(D) True: Ductility is measured as the distance (length in cm) to which a standard briquette of bitumen can be stretched before breaking.Since statement (C) is false, it is the correct answer.
(A) True: Penetration is measured as the depth (in units of mm) to which a standard needle penetrates a bitumen sample under specified conditions.
(B) True: The softening point of bitumen is determined using the Ring and Ball apparatus.
(C) False: The softening point is the temperature () at which the bitumen attains a particular degree of softening. It is not measured in units of time.
(D) True: Ductility is measured as the distance (length in cm) to which a standard briquette of bitumen can be stretched before breaking.Since statement (C) is false, it is the correct answer.
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