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HSSC Fire Operator Cum Driver (30-12-2023)
📆 November 14, 2024
Total Questions: 100
11.
In the CO₂ extinguisher, CO₂ is retained in a liquid condition at about ................ bars pressure.
(a) 25
(b) 51
(c) 41
(d) 61
(e) Unattempted
Correct Answer:
(b) 51
12.
The diameter of the hose reel is normally :
(a) 10 mm
(b) 19 mm
(c) 36 mm
(d) 50 mm
(e) Unattempted
Correct Answer:
(b) 19 mm
13.
The Human Development Report is published annually by :
(a) I. M. F.
(b) I. B. R. D.
(c) U. N. D. P.
(d) U. N. E. S. C. O.
(e) Unattempted
Correct Answer:
(c) U. N. D. P.
14.
The integrating factor of dy ÷ dx + y 1÷x y is :
(a) xeᵡ
(b) eᵡ/x
(c) xe¹/²
(d) x/eᵡ
(e) Unattempted
Correct Answer:
(b) eᵡ/x
15.
Who was the First President of United States?
(a) Thomas Jefferson
(b) George Washington
(c) Truman
(d) None of the above
(e) Unattempted
Correct Answer:
(b) George Washington
16.
................ is a lowest temperature at which a material will emit vapor combustible in air mixture.
(a) Flash over
(b) Fire point
(c) Flash point
(d) Flash up
(e) Unattempted
Correct Answer:
(c) Flash point
17.
Which of the following are non-flammable gases ?
(a) C₃H₈, CH₄
(b) H₂, C₄H₁₀
(c) CO₂, SO₂, N₂
(d) C₂H₄, C₂H₂
(e) Unattempted
Correct Answer:
(c) CO₂, SO₂, N₂
18.
Fittings used for joining two lengths of hose together or to an apparatus are called as :
(a) Couplings
(b) Diffuser
(c) Branch pipe
(d) Nozzles
(e) Unattempted
Correct Answer:
(a) Couplings
19.
The Code of Practice for fire safety of buildings exit requirement as laid down in the :
(a) IS-1644 : 1988
(b) IS-1654 : 1988
(c) IS-1532 : 1990
(d) IS-1650 : 1988
(e) Unattempted
Correct Answer:
(a) IS-1644 : 1988
20.
................ suit helps the fireman to work very close to the flames.
(a) Proximity suit
(b) Entry suit
(c) Approach suit
(d) Jacket suit
(e) Unattempted
Correct Answer:
(a) Proximity suit
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