Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

The length of a spike is _________(a) 5-10 cm(b) 10-15 cm(c) 15-20 cm(d) 20-25 cmThe question was posed to me in semester exam.My doubt stems from Tools Used in Carpentry Work in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Right answer is (B) 10-15 cm

To EXPLAIN: A spike is a large nail which is mainly USED for securing heavy members. The length of a spike is usually 10-15 cm.
Discussion
2.

Split ring connector and toothed ring connector are the examples of ___________(a) Screws(b) Bolts(c) Dogs(d) ConnectorsThis question was addressed to me during a job interview.My enquiry is from Carpentry and Joinery in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct choice is (d) Connectors

The best explanation: The connectors are available in various other FORMS which can be USED only under special circumstances. Split ring connector and toothed connected maybe either have teeth on single side or both the SIDES. The connectors are WIDELY used in the construction of timber arches, trusses and similar other structures.
Discussion
3.

_________________ straps are provided in case of Lapped joint.(a) Aluminium(b) Nickel(c) Wooden(d) IronThe question was posed to me by my school teacher while I was bunking the class.I'm obligated to ask this question of Carpentry and Joinery topic in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The CORRECT CHOICE is (d) Iron

Explanation: The iron straps are provided with bolts on sides for ADDITIONAL strength and in the member as to RESIST tensile stress, the bolts passing through both the pieces may be provided.
Discussion
4.

____________________ system includes a supply of dry chemical, an expellent gas such as compressed nitrogen, detection devices and nozzles for discharging the dry chemical into the hazard area.(a) Hydrant(b) Foam(c) Dry chemical(d) Water sprayThis question was addressed to me in semester exam.I want to ask this question from Fire Protection in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct choice is (c) Dry chemical

Explanation: The dry chemical system can be applied in TWO ways, namely, total flooding or LOCAL application. The former is used for enclosed area where all openings can be closed AUTOMATICALLY when the system starts WORKING.
Discussion
5.

The _____________ alarm system consist of hand bell or such other arrangement by which the occupants of the whole or part of the building are informed about the happening of a fire.(a) Man made(b) Manual(c) Automatic(d) ElectricThe question was posed to me in quiz.Question is from Fire Protection in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct option is (b) Manual

Easiest explanation: The manually operated ALARMS should be provided NEAR all main exits and in the natural path of ESCAPE from fire and at readily accessible points which are not likely to be OBSTRUCTED by smoke. It is of utmost important to make suitable arrangement to protect opening in CASE of a fire.
Discussion
6.

Which of the following is not a boring tool?(a) Ratchet brace(b) Screwdriver(c) Auger bit(d) Pointed awlThis question was posed to me by my college director while I was bunking the class.This intriguing question comes from Tools Used in Carpentry Work in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Right choice is (b) Screwdriver

To explain: A boring TOOL is used to drive holes in timber members. Ratchet brace, auger bit and POINTED AWL are EXAMPLES of boring tools. A screwdriver is used to drive nails and SCREWS.
Discussion
7.

Which of the following boring tool is used for deep boring?(a) Centre bit(b) Auger(c) Gimlet(d) Brad awlThe question was asked by my school teacher while I was bunking the class.This is a very interesting question from Tools Used in Carpentry Work in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer» CORRECT option is (b) Auger

The best I can explain: Auger is a tool that is USED for deep boring. CENTRE bit is used for boring holes of various sizes and SHAPES. Gimlet is used for boring small holes. With brad AWL, small and fine holes can be made.
Discussion
8.

___________________ is the simplest form of joint.(a) Lapped joint(b) Framing joint(c) Oblique joint(d) Widening jointI got this question in an online interview.My query is from Carpentry and Joinery topic in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct OPTION is (a) Lapped joint

Explanation: Lapped joint is form by putting the two TIMBER pieces one over the other from a short DISTANCE and the BINDING them together by means of iron straps or Stirrups.
Discussion
9.

______________ is a poor conductor of heat and the cracks are formed in this material when heated and then suddenly cooled.(a) Glass(b) Steel(c) Brick(d) AluminiumI got this question in a job interview.This interesting question is from Fire Resisting Materials in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Right answer is (a) Glass

For explanation I would say: The reinforced glass with steel wire is more fire resistant than ordinary glass and it can resist SUDDEN variations in temperature without the formation of cracks. The WIRED glass, even if it BREAKS, keeps the fractured glass in its ORIGINAL POSITION.
Discussion
10.

_______________ is a term which is used to indicate the covering of entire or part of the exposed surface of timber by means of Veneers.(a) Rebating(b) Studding(c) Wainscot(d) VeneeringThis question was addressed to me in examination.Question is from Terms Used in Carpentry in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer» RIGHT option is (d) Veneering

The best EXPLANATION: In Veneering, the inner position is designed to satisfy structural requirements and the VENEERS are fixed for decorative purposes. The Veneers MAY be laid in large sheets or into small pieces of suitable shapes.
Discussion
11.

___________ is a term which is used to indicate the sinking of edge of one piece of timber into another.(a) Mitring(b) Scribing(c) Housing(d) NosingThis question was addressed to me by my college director while I was bunking the class.I'm obligated to ask this question of Terms Used in Carpentry topic in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct choice is (C) Housing

For explanation: MITRING is a term that is used to indicate a process of JOINING TWO pieces of timber at an angle. If one end of moulding is good to SUIT the profile of another moulding, it is known as scribing.
Discussion
12.

Which of the following cutting tools is used for cutting wood?(a) Coping saw(b) Cross-cut saw(c) Compass saw(d) Tenon sawI got this question by my college director while I was bunking the class.My enquiry is from Tools Used in Carpentry Work in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct choice is (c) Compass SAW

Best explanation: Compass saw is USED for cutting wood. A coping saw and cross-cut saw are used to cut TIMBER members. A tenon saw is used to cut shaping JOINTS.
Discussion
13.

Mortise gauge is used to mark lines perpendicular to the edges.(a) True(b) FalseThe question was posed to me during an interview.This intriguing question comes from Tools Used in Carpentry Work topic in chapter Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct answer is (b) False

The explanation: Mortise gauge is used to MARK lines PARALLEL to the EDGES. In PLACE of a mortise gauge, a MARKING gauge can also be used to mark parallel lines to the edges.
Discussion
14.

In __________ joint, the two Timber pieces are placed touching each other and then wooden or iron fishplate are placed on the opposite faces.(a) Scarfed(b) Spliced(c) Fished(d) LappedThe question was posed to me in final exam.The above asked question is from Carpentry and Joinery topic in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Right option is (C) Fished

The EXPLANATION is: In Fished joints, the FISH plates are SECURED in position by bolts passing through the pieces. The bolts are arranged in a zigzag fashion in plan so that there is only one Bolt hole at any cross section.
Discussion
15.

The hazard which concerns with the loss or damage to life is referred to as the ______________(a) Peron hazard(b) People Hazard(c) Personal hazard(d) Internal hazardThis question was posed to me by my school principal while I was bunking the class.Question is taken from Fire Resisting Materials topic in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct option is (c) Personal HAZARD

For explanation: The possibility of LOSS or damage to life is referred to as the personal hazard and naturally it is not permanent importance. The FIRE safety provisions would be liberally provided for this type of hazard and safe fireproof EXIST should be suitably accommodated in the division of the building having more than ONE storey.
Discussion
16.

The class of fire-load not exceeding 1.15×10^6 is considered as _________(a) High(b) Low(c) Moderate(d) ExtremeI have been asked this question in an interview for job.Question is taken from Fire Resisting Materials in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer» RIGHT OPTION is (B) Low

To explain: Low class of fire-load is concerned with the occupancies living in domestic buildings, hotels, boarding houses, restaurants, SCHOOLS, hospitals, temples, factories where NH material are used, etc.
Discussion
17.

______________ is a form of a solid head where the threads are provided on which a nut moves.(a) Nail(b) Nut(c) Connector(d) BoltI had been asked this question in exam.My question comes from Carpentry and Joinery topic in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct choice is (d) Bolt

For explanation: The size of bolts should be calculated ACCORDING to the stresses which they have to resist. The bolts maybe of Steel, wrought iron on bras and they are stronger than Nails or screws. They are used ESPECIALLY for joint subjected to considerable tensile stress and they form the RIGID JOINTS.
Discussion
18.

_______________ joints are employed to extend the width of board or planks, which are placed edge to edge.(a) Angle(b) Widening(c) Lapped(d) ObliqueThe question was asked during a job interview.My question is from Carpentry and Joinery in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct OPTION is (b) Widening

Easy explanation: Widening Joints are also known as the SIDE joints or BOARDING joints and they are used for wooden DOORS, FLOORS, etc.
Discussion
19.

___________ is a term which is used to indicate the process of formation of moulded sections.(a) Nosing(b) Moulding(c) Planning(d) SawingThe question was asked in an internship interview.Question is taken from Terms Used in Carpentry in chapter Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Right option is (B) Moulding

Explanation: Moulding can be done either by hand or by MACHINE. WHEREAS, the art of cutting of wood by means of saw is known as the SAWING.
Discussion
20.

______________ joint is used to connect members of bigger sizes.(a) Lapped joint(b) Oblique tenon joint(c) Mitre joint(d) Birdsmouth jointI got this question in an interview.This interesting question is from Carpentry and Joinery in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct choice is (b) Oblique tenon joint

To elaborate: The tenon of the inclined MEMBER is oblique and it fits into the corresponding mortise of the inclined member. This joint is FREQUENTLY used in the construction of timber ROOF and it is sometimes STRENGTHENED by means of bolts, STRAPS, etc.
Discussion
21.

_________________ systems are installed with a view to give an alarm and to call for assistance in case of fire.(a) Water supply(b) Electric(c) Alarm(d) RemoteI got this question in exam.My question is from Fire Protection in chapter Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer» CORRECT option is (c) Alarm

Easiest EXPLANATION: It is rightfully said that the first five minutes of a FIRE are more important than the next 5 hours. This is due to the fact that the control over the fire is achieved effectively, if fought in the initial stage of its OCCURRENCE.
Discussion
22.

_________________ is a very good conductor of heat.(a) Asbestos cement(b) Aluminium(c) Cast iron(d) Wrought ironI had been asked this question in my homework.My doubt stems from Fire Protection topic in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct option is (b) Aluminium

For explanation I would say: Aluminium also possesses POOR FIRE resisting properties. Hence, it’s USE is restricted to those STRUCTURE which have very low fire risk.
Discussion
23.

The figure below represents _______(a) Cut nail(b) Dog spike(c) Bevel(d) Compass sawThis question was addressed to me in my homework.My doubt stems from Tools Used in Carpentry Work topic in chapter Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer» RIGHT option is (b) Dog SPIKE

Easy explanation: The given figure REPRESENTS a dog spike. It is U-shaped and has POINTED ends. It is usually made up of WROUGHT iron.
Discussion
24.

The term ________ includes such forms of construction which have to resist is due to loads coming up on them.(a) Carpenter(b) Joinery(c) Carpentry(d) JointsI got this question in a job interview.Enquiry is from Terms Used in Carpentry in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct option is (c) Carpentry

Explanation: A carpenter CONSTRUCTS PERMANENT TIMBER work such as roof, floor, etc. as well as temporary Timber works such as SCAFFOLDING, Shoring, centering, etc.
Discussion
25.

In ___________________ system, the chemical foam is formed by passing foam producing liquid and water through an agitation device.(a) Chemical(b) Foam(c) Wet resin(d) HalonThis question was addressed to me by my school principal while I was bunking the class.This key question is from Fire Protection in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Right answer is (b) Foam

For explanation: The foam is an aggregate of air filled BUBBLES. It is LIGHTER than FLAMMABLE liquids and oils. It has the APPEARANCE of soap leather and it flows easily over a liquid surface. It floats on the surface of the liquid and thus forms a continuous blanket which separates effectively the flammable liquid from air SUPPLY.
Discussion
26.

The ________________ indicates of specific family of chemicals which are produced by replacing one or more hydrogen atoms with halogen atoms.(a) Halon system(b) Wet resin system(c) Carbon dioxide system(d) Dry chemical systemI have been asked this question in a job interview.This is a very interesting question from Fire Protection in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer» RIGHT answer is (a) Halon system

The BEST explanation: The Halon is contain the cylinder under pressure in liquid state and it is released through nozzle on the piping DISTRIBUTION arrangement. An actuator is provided on the cylinder control valve and it is operated EITHER by ELECTRIC or pneumatic signal when a fire occurs.
Discussion
27.

_________________ extinguishes fire by dilute inflammable mixtures of air and flammable gases or vapours to proportion below their flammable limits.(a) Water vapour(b) Carbon monoxide(c) Carbon dioxide(d) Hydrogen sulphideThe question was posed to me in an internship interview.I'm obligated to ask this question of Fire Protection in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer» RIGHT choice is (c) Carbon dioxide

Explanation: The carbon dioxide is a clean, NON combustible and non corrosive gas. It does not conduct electricity and it penetrates and spreads as a gas over the entire area to be PROTECTED from AIR. The carbon dioxide is stored in a container either at high pressure or low pressure.
Discussion
28.

______________________joints are employed to connect the members at an angle other than a right angle.(a) Angle(b) Lapped(c) Oblique(d) BearingThis question was addressed to me in an interview.Question is from Carpentry and Joinery topic in chapter Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Right CHOICE is (c) Oblique

Explanation: The ANGULAR nodes is MADE in the incline members. This note is called as Birds MOUTH. The other members FIT into the Birds mouth.
Discussion
29.

_________________ are the corner joints which are employed to connect the members at ends so as to form a corner or angular edge.(a) Widening joint(b) Angle joint(c) Oblique joint(d) Corner jointI got this question during an interview.Question is from Carpentry and Joinery topic in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer» CORRECT option is (b) ANGLE joint

Best explanation: Angle joints are very often secured by nailing and glue is used for making these joints. Butt joint, Rebated butt Joint, Tongues joint, HOUSED joints, etc are some examples of this TYPE of joint.
Discussion
30.

_______________ indicates the lining of panelling of wood on the lower part of masonry walls say for height of about 600 mm from the floor level.(a) Rebating(b) Wainscot(c) Studding(d) PlaningThis question was addressed to me in an online interview.This interesting question is from Terms Used in Carpentry topic in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct OPTION is (b) Wainscot

The best explanation: Whereas, REBATING is a term that is used to indicate the PROCESS of preparing a RECTANGULAR portion on the edge of a timber PIECE so as to receive another timber piece which is also similarly cut.
Discussion
31.

The term ____________ is used to indicate the art of preparing internal fittings and finishing of timber.(a) Joints(b) Joinery(c) Carpenter(d) CarpentryThe question was asked during an internship interview.The query is from Terms Used in Carpentry in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct option is (b) JOINERY

The explanation: A Joiner construct TIMBER work such as doors, Windows, STAIRS, floor boards, FURNITURE, CUPBOARDS, etc. Thus the joinery is used for delicated construction requiring precise workmanship for enhancing the architectural beauty of timber.
Discussion
32.

____________________ arrangement consists of a system of overhead pipe which are fixed in the ceiling of the roof.(a) Fire extinguishers(b) Internal hydrants(c) Automatic sprinkler(d) Water pipesI have been asked this question by my school principal while I was bunking the class.My question is based upon Fire Protection in chapter Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct option is (c) Automatic sprinkler

Easy explanation: The pipes are usually provided at the centre to centre distance of 3 M. The head actuated devices, known as the sprinkler heads are situated at REGULAR intervals, usually 3 metres along the pipe. This arrangement is adopted for important STRUCTURES such as textile mills, Paper Mills, FACTORIES, theatres, HOSPITALS, etc.
Discussion
33.

Which of the following is not a cutting tool?(a) Compass saw(b) Firmer chisel(c) Plier(d) Coping sawI got this question at a job interview.This interesting question is from Tools Used in Carpentry Work topic in chapter Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The CORRECT choice is (c) Plier

Best explanation: Compass SAW, coping saw and firmer chisel are EXAMPLES of cutting tools. Plier is used to TAKE out the damaged nails.
Discussion
34.

A ___________ joint is formed by making projections and corresponding depression on the other piece.(a) Scarfed(b) Widening(c) Tongued(d) AngleThis question was addressed to me in examination.Question is taken from Carpentry and Joinery in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Right choice is (a) Scarfed

The BEST EXPLANATION: In case of Scarfed Joint, the pieces are then secured by using bolts, straps, keys and the metal fish plate. The fish plates used in the joints are usually BENT and lent into the wooden members.
Discussion
35.

_____________ term is used to indicate the taking off the edge of corner or arris of a wooden piece.(a) Groove(b) Studding(c) Planning(d) ChamferingThis question was addressed to me in homework.The origin of the question is Terms Used in Carpentry in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Right option is (d) CHAMFERING

Best explanation: Chamfering forms an angle of 45° and a V joint will be formed when TWO chamfered PIECES are placed together. If the angle of chamfer is other than 45°, it is known as the Bevel. If the chamfer does not continue for the full length of timber, it is called as Stopped Chamfer.
Discussion
36.

______________ are the pieces of wrought iron or steel and these are driven into the member to be connected using hammer or other means.(a) Nails(b) Screws(c) Sockets(d) WedgesThis question was addressed to me during an online exam.Asked question is from Carpentry and Joinery topic in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Right answer is (a) Nails

Explanation: Nails are used for rough but strong WORK. The VARIOUS types of nails are available in market such as Clout NAIL which are large, flat, circular head. Lath nail which has a square and TAPERING sank with rough sides and various other nails are with different shapes and sizes.
Discussion
37.

Which of the following is not a planning tool?(a) Rose plane(b) Bead plane(c) Jack plane(d) Rebate planeThe question was posed to me during an online exam.My doubt stems from Tools Used in Carpentry Work topic in chapter Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct option is (a) Rose plane

The best explanation: Planning tools are used to PLAN surfaces. EXAMPLES of planning tools are bead plane, JACK plane and rebate plane. They are ALSO used to cut small moldings along the edges.
Discussion
38.

The structural elements made of __________ gets Ignite and get rapidly destroyed in case of fire.(a) Cast iron(b) Timber(c) Stone(d) SteelThe question was posed to me in my homework.Origin of the question is Fire Resisting Materials topic in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct answer is (B) Timber

Easiest explanation: In order to make Timber more fire-resistant, the surface of the timber are SOMETIMES coated with certain CHEMICAL such as Ammonium Phosphate and sulphate, borax and boric acid, ETC. Such a treatment on timber surfaces retards the rise of temperature during a fire.
Discussion
39.

A wire nail is also known as ____________ and it is very tough and strong.(a) Clout nail(b) Lath nail(c) French nail(d) TrenailI have been asked this question in an online interview.This is a very interesting question from Carpentry and Joinery topic in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer» RIGHT option is (c) FRENCH nail

Explanation: Whereas, a CLOUT nail has large, flat, circular ahead. Lath nail has a square and tapering shank with rough sides. TRENAIL is a pin of hard wood and can be used in pieces of Iron nails where it is feared that the Iron nails would rust and INJURIES the timber.
Discussion
40.

The two members meeting at an angle can be joined by a ____________(a) Bridle joint(b) Oblique tenon joint(c) Mitre joint(d) Birds mouth jointThis question was posed to me in an interview for job.The doubt is from Carpentry and Joinery in chapter Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»
Discussion
41.

___________________ include portable fire extinguishers, the usual being carbon dioxide type.(a) Manual fire extinguisher(b) Automatic sprinkler(c) Internal hydrants(d) Water tapsThe question was asked during an interview.This intriguing question originated from Fire Protection in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct CHOICE is (a) Manual FIRE extinguisher

Easiest EXPLANATION: SOMETIMES buckets of water, and asbestos blankets maybe kept ready at all TIME to extinguish fire. This equipment are useful for quenching a fire immediately on its generation.
Discussion
42.

The edge of portion overhanging a vertical surface is known as the ____________(a) Rebating(b) Studding(c) Veneering(d) NosingI have been asked this question in a national level competition.The above asked question is from Terms Used in Carpentry in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct answer is (d) Nosing

The EXPLANATION: Nosing term has a slightly different meaning when used in relation to the step of a Stair. A rounded Nosing has the OVERHANGING edge semi-circular in SECTION.
Discussion
43.

It is found that the _______ are not seriously affected until very high temperature of 1200°C to 1300°C are reached.(a) Plastic(b) Limestone(c) Sandstone(d) BrickThe question was posed to me in semester exam.My enquiry is from Fire Resisting Materials topic in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct option is (d) Brick

The best explanation: Brick is poor conductor of heat. If the type of MOTOR and quality of workmanship are good, the brick masonry generally OFFERS good resistant to fire. However, or brick has its own structural limitations for USING the BUILDINGS.
Discussion
44.

___________________ is a bad conductor of heat and it is an effective material for fire resisting construction.(a) Aluminium(b) Steel(c) Granite(d) ConcreteThe question was posed to me in class test.My question comes from Fire Protection topic in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct option is (d) Concrete

To explain: The concrete OFFERS a much higher resistance to a fire than any other material. The ACTUAL behaviour of concrete in case of fire DEPENDS on the quality of cement and the TYPE of aggregate FORMING the concrete and in case of reinforced and pre stressed structure, it also depends on the position of Steel in the concrete.
Discussion
45.

Which of the following is not a marking tool?(a) Chisel(b) Bevel(c) Square(d) Scribing knifeThe question was asked in an online interview.My enquiry is from Tools Used in Carpentry Work topic in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct choice is (a) Chisel

Best explanation: MARKING tool is a tool that is used for marking LINES on wood. Bevel, square and scribing KNIFE are examples of marking tools. Chisel is a cutting tool and is used to cut SHAPING joints.
Discussion
46.

The __________ is a bad conductor of heat and it is also non-combustible building material.(a) Sandstone(b) Granite(c) Stone(d) LimestoneThe question was asked during an interview for a job.My doubt is from Fire Resisting Materials topic in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer» CORRECT ANSWER is (c) Stone

Explanation: The stone is also liable to disintegrate into small PIECES when heated and suddenly cooled. The GRANITE explodes and gets easily DISINTEGRATED in case of a fire. The limestone is easily crumbled even by ordinary fire.
Discussion
47.

________________ is rarely used as a structural material at present construction works.(a) Steel(b) Cast iron(c) Aluminium(d) Asbestos cementThis question was addressed to me by my college professor while I was bunking the class.The query is from Fire Resisting Materials topic in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct answer is (b) CAST IRON

Best explanation: Cast iron files into pieces when heated and SUDDENLY COOLED. Hence, when this material is used in construction, it is covered either by BRICK work of one brick thickness or any other fire resisting material such as concrete.
Discussion
48.

The class of fire-load limiting between 2.23×10^6 to 4.60×10^6 is considered as ______________(a) Extreme(b) Moderate(c) High(d) LowI have been asked this question in class test.I'm obligated to ask this question of Fire Resisting Materials in section Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Correct ANSWER is (c) High

For explanation I would say: High CLASS of fire-load is concerned with the occupancies living in the godowns and similar structure used for bulk STORAGE of NH material and goods. Whereas, moderate class lies between 1.15×10^6 to 2.30×10^6 and it is concerned with RETAIL shops, Emporium, markets, factory, workshops, etc.
Discussion
49.

The content of oxygen is normally ________% in air.(a) 100(b) 50(c) 73(d) 21The question was posed to me in unit test.My question comes from Fire Resisting Materials topic in division Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

The correct option is (d) 21

For EXPLANATION I would say: If the oxygen CONTENT falls below 17% during a fire, rational THOUGHT and muscle control become extremely difficult. When the oxygen level falls below 6%, the breathing stops and after 4 minutes to 6 minutes WITHOUT oxygen the brain death occurs.
Discussion
50.

__________ is used for sharpening various tools.(a) Claw hammer(b) Oil stone(c) Pincer(d) Ratchet braceThis question was posed to me in semester exam.Origin of the question is Tools Used in Carpentry Work in chapter Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

Answer»

Right option is (B) Oil STONE

Easy explanation: Oil stone is used to sharpen various tools and blades. Claw hammer is used to DRIVE nails and screws. Pincer is used to TAKE out damaged nails. Ratchet brace is a BORING tool.
Discussion