Description : For construction of structures under water, the type of lime used, is (A) Hydraulic lime (B) Fat lime (C) Quick lime (D) Pure lime
Last Answer : Answer: Option A
Description : _______ being a very light metal is used for making aircraft bodies . a) aluminium b)copper c)zinc d)iron
Last Answer : a) aluminium
Description : Aluminum is a very light metal which resists a) scratch b) moisture c) temperature d) corrosion
Last Answer : d) corrosion
Description : Knowledge of hydrology is necessary for civil engineers for (A) Designing and construction of irrigation structures (B) Designing and construction of bridges and culverts (C) Flood control works (D) All the above
Last Answer : Answer: Option D
Description : Pozzolana cement is used with confidence for construction of (A) Dams (B) Massive foundations (C) R.C.C. structures (D) All the above
Last Answer : (D) All the above
Description : Construction joints are provided (A) Where B.M. and S.F. are small (B) Where the member is supported by other member (C) At 18 m apart in huge structures (D) All the above
Description : For the construction of the retaining structures, the type of concrete mix to be used, is (A) 1 : 3 : 6 (B) 1 : 2 : 4 (C) 1 : 1½ : 3 (D) 1 : 4 : 8
Last Answer : Answer: Option C
Description : For the construction of thin R.C.C. structures, the type of cement to be avoided, is (A) Ordinary Portland cement (B) Rapid hardening cement (C) Low heat cement (D) Blast furnace slag cement
Description : For construction of structures in sea water, the cement generally preferred to, is (A) Portland-pozzolana cement (B) Quick setting cement (C) Low heat Portland cement (D) Rapid hardening cement
Description : Explain the criteria for selection of construction materials for different civil engineering Structures on basis of their strength and durability
Last Answer : The material must be selected for their ability to support the loads imposed by the building over the whole life of the building. An appropriate structural system and correct selection of ... of the building. The construction material should have sufficient strength to carry the prescribed load.
Description : Why would it hurt to hold a piece of metal (not hot or cold, but similar to a feeling of aluminum in the mouth, but in the body)?
Last Answer : answer:Not sure. I would suspect it wouldn’t have anything to do with the metal itself. Maybe something on it? Maybe you just got dizzy or something from bending down? Way too many possibilities and not nearly enough info.
Last Answer : : Duralmin metal is used to make aircraft bodies
Description : Pick out the wrong statement. (A) Pure rubber is as useless as pure gold as a material of construction (B) Thermal conductivity of aluminium is higher than that of copper; henceit is ... has poor weldability (D) Reinforced plastics are made from both thermoplastic as well as thermosetting plastics
Last Answer : (B) Thermal conductivity of aluminium is higher than that of copper; henceit is increasingly used for utensil making
Description : How bad is it to smoke weed out of an aluminum can or a metal ball point pen as opposed to the typical glass piece?
Last Answer : It’s bad for your brain to smoke pot in general, regardless of what you are using. And no, if you’re worried about weird fumes or it mixing with the pot and causing bad effects, no…it’s just as bad as using glass or an apple and shouldn’t be any worse or better.
Description : Is aluminum a metal or non metal or metalloid?
Last Answer : Aluminum is normally classified as a metal, but it has somecharacteristics that cause it to be occasionally classified as ametalloid.
Description : What happens when aluminum metal is immersed in a soultion of silver nitrate?
Last Answer : The chemical reaction is:Al + 3 AgNO3 = Al(NO3)3 + 3 Ag(s)
Description : Nature The second most abundant metal found in the earth’s crust is _____. A. Iron B. Calcium C. Sodium D. Aluminum
Last Answer : ANSWER: A
Description : The second most abundant metal found in the earth’s crust is _____. A. Iron B. Calcium C. Sodium D. Aluminum
Description : The metal used to make lightning conductors is – (1) Iron (2) Aluminum (3) Copper (4) Zinc
Last Answer : (3) Copper Explanation: A lightning rod is a metal rod or metallic object mounted on top of a building, electrically bonded using a wire or electrical conductor to interface with ground or "earth" ... wire, instead of passing through the building, where it could start a fire or cause electrocution.
Description : The displacement reaction between iron (III) oxide and a metal X is used for welding the rail tracks. Here X is: (a) Copper granules (b) Magnesium ribbon (c) Sodium pellets (d) Aluminum dust
Last Answer : (d) Aluminum dust
Description : The metal extracted from Bauxite is : (1) Silver (2) Copper (3) Manganese (4) Aluminum
Last Answer : Aluminum
Description : If so equipped, when should an aircraft display the anti-collision light? a. Only at night in flight, but not on the ground if being towed b. Whilst taxiing but not whilst being towed c. Only at night with engines running d. At all times on the ground when the engines are running
Last Answer : d. At all times on the ground when the engines are running
Description : (1) they contain free electrons Explanation: Metals typically consist of closepacked atoms, meaning that the atoms are arranged like closely packed spheres. Two packing motifs are common, one ... surrounded by six neighboring atoms. Several metals adopt both structures, depending on the temperature.
Last Answer : Helium gas is filled in ballons because (1) its atomic number is 2 (2) it is lighter than air (3) it is one of the constitutents of water (4) it is a noble gas
Description : Light weight metallic alloy used in aircraft industry is (A) Aluminium (B) High silicon (14%) iron (C) Duralumin
Last Answer : (C) Duralumin
Description : The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system (A) Is as light as possible (B) Has very high C.O.P. (C) Employs minimum quantity of refrigerant (D) Consumer minimum horse power
Last Answer : (A) Is as light as possible
Description : An aircraft is converging from the left. Which light will you see first? a. Red b. Green c. Blue d. White
Last Answer : b. Green
Description : Aluminium is used in making aircraft because a) malleable b)light c)both i and ii d)none of the above
Last Answer : b)light
Description : Which one of the following is an indigenously built light combat aircraft of India? (1) Akash (2) Vikrant (3) Arjun (4) Vikrant
Last Answer : Vikrant
Description : What is the name of the Light Combat Aircraft developed by India indigenously ? (1) BrahMos (2) Chetak (3) Astra (4) Tejas
Last Answer : Tejas
Description : What is Pure Metal ?
Last Answer : : Pure metal refers to those metals which do not contain any other alloys and some of which have specific properties.
Description : Metals of high purity are obtained by zone refining. Impurities are more soluble in melt in pure metal.
Last Answer : Metals of high purity are obtained by zone refining. Impurities are more soluble in melt in pure ... Statement-1 is false but Statement -2 is true
Description : In which of the following method of purification metal is converted to its volatile compound which is decomposed to give pure metal?
Last Answer : In which of the following method of purification metal is converted to its volatile compound ... Heating with iodine C. Liquidation D. Distillation
Description : What is an example of a alloy and how its properties may make it more useful than a pure metal?
Last Answer : Feel Free to Answer
Description : Diamond is chemically (a) a mixture of metal carbonates (b) pure carbon (c) a pure form of sand (d) a mixture of calcium and magnesium phosphates
Last Answer : Ans:(b)
Description : (3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be ... on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.
Last Answer : Which of the following is not a method of preparing oxygen? (1) Electrolysis of water (2) Fractional distillation of liquid air (3) Decomposition of potassium permanganate (4) Decomposition of manganese dioxide
Description : In electro-refining, the pure metal is deposited on – (1) vessel (2) electrolyte (3) cathode (4) anode
Last Answer : (3) cathode Explanation: In electro-refining, the anodes consist of unrefined impure metal, and as the current passes through the acidic electrolyte the anodes are corroded into the solution so ... pure metal onto the cathodes. Electrolytic refining is used to extract impurities from crude metals.
Description : During electro refining, Pure Metal is collected at
Last Answer : Cathode
Description : Babbitt metal is not a (A) Tin base alloy (B) White metal (C) Lead base alloy (D) Pure metal
Last Answer : (D) Pure metal
Description : A metallic alloy in general as compared to their pure metal components is (A) More corrosion resistant (B) Having higher melting point (C) Having lower hardness, reactivity and fusibility (D) Having lower electrical conductivity
Last Answer : (A) More corrosion resistant
Description : Mention the methods of obtaining ultra pure metal.
Last Answer : a) Fractional crystallization or zone refining. b) Vacuum melting c) Distillation d) Chemical vapour deposition e) Liquation process
Description : “Pop off” of a porcelain veneer from the under the lying gold crown is due to:** A. Too thick application of pure gold surface conditioner B. Contamination at the porcelain metal interface C. Under firing the opaque layer D. All of the above
Last Answer : B. Contamination at the porcelain metal interface
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
Description : In electro-refining, the pure metal is deposited on (1) vessel (2) electrolyte (3) cathode (4) anode
Last Answer : cathode
Description : What light that strikes the following materials clear plastic aluminum foil and tissue paper?
Last Answer : What is the answer ?
Description : It is the made from semiconductor material such as aluminum-galium-arsenide or gallium-arsenide-phosphide. A. APD B. Injection laser diode C. Light emitting diode D. Positive-intrinsic-negative
Last Answer : C. Light emitting diode
Description : A small hole in a sheet of aluminum foil is used to diffract yellow light both under water and in a vacuum. Which is true? w) light diffracts less in the water because its wavelength is ... because its wavelength is larger. z) light diffracts more in the water because its wavelength is smaller.
Last Answer : ANSWER: X -- LIGHT DIFFRACTS LESS IN THE WATER BECAUSE ITS WAVELENGTH IS SMALLER