Trinitrotoluene is – (1) used to melt metals (2) used to fuse two metals (3) used as an abrasive (4) used as an explosive

Trinitrotoluene is – (1) used to melt metals (2) used to fuse two metals (3) used as an abrasive (4) used as an explosive
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(4) used as an explosive Explanation: Trinitrotoluene (C6H2 (NO2)3.CH3), abbreviated as TNT, is sometimes used as a reagent in chemical synthesis, but it is best known as an explosive material with convenient handling properties. The explosive yield of TNT is considered to be the standard mea-sure of bombs and other explosives.
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Trinitrotoluene is (1) used to melt metals (2) used to fuse two metals (3) used as an abrasive (4) used as an explosive

Description : Trinitrotoluene is (1) used to melt metals (2) used to fuse two metals (3) used as an abrasive (4) used as an explosive

Last Answer : used as an explosive

(1) aluminium powder and ammonium nitrate Explanation: Ammonal is an explosive made up of ammonium nitrate and aluminium powder. The ammonium nitrate functions as an oxidizer and the aluminium as fuel. The use of the relatively cheap ammonium nitrate and aluminium makes it a replacement for pure TNT. The mixture is affected by humidity because ammonium nitrate is highly hygroscopic. Ammonal is not easily detonated, requiring a fairly substantial shock, though it is still more sensitive than trinitrotoluene and composition C4.

Description : (1) aluminium powder and ammonium nitrate Explanation: Ammonal is an explosive made up of ammonium nitrate and aluminium powder. The ammonium nitrate functions as an oxidizer and the aluminium ... a fairly substantial shock, though it is still more sensitive than trinitrotoluene and composition C4.

Last Answer : Gelatin is mostly used in making icecreams in order to - (1) prevent making a colloid (2) stabilise the colloid and prevent crystallisation (3) stabilise mixture (4) enrich the aroma

Trinitrotoluene (TNT), an explosive, is made by the nitration of (A) Nitrobenzene (B) Toluene (C) Nitrotoluene (D) Benzene

Description : Trinitrotoluene (TNT), an explosive, is made by the nitration of (A) Nitrobenzene (B) Toluene (C) Nitrotoluene (D) Benzene

Last Answer : (B) Toluene

Which of the following is an explosive? (A) Nitro-glycerine (B) Trinitrotoluene (TNT) (C) Cellulose nitrate (D) All (A), (B), and (C)

Description : Which of the following is an explosive? (A) Nitro-glycerine (B) Trinitrotoluene (TNT) (C) Cellulose nitrate (D) All (A), (B), and (C)

Last Answer : (D) All (A), (B), and (C)

Finely ground calcium aluminate & silicate is a/an (A) Cermet (B) Cement (C) Abrasive (D) Explosive

Description : Finely ground calcium aluminate & silicate is a/an (A) Cermet (B) Cement (C) Abrasive (D) Explosive

Last Answer : (B) Cement

The fuel for life, Important parts of the day, Even if it is a long time away. Long lasting use, Long lasting fuse, Until my explosive death day. What am I? -Riddles

Description : The fuel for life, Important parts of the day, Even if it is a long time away. Long lasting use, Long lasting fuse, Until my explosive death day. What am I? -Riddles

Last Answer : The sun.

The damage/deterioration of metals by the __________ action of fluids is called 'erosion'. (A) Abrasive (B) Corrosive (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : The damage/deterioration of metals by the __________ action of fluids is called 'erosion'. (A) Abrasive (B) Corrosive (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (A) Abrasive

What type of wear occurs due to an interaction of surfaces due to adhesion of the metals? a) Adhesive wear b) Abrasive wear c) Fretting wear d) Erosive wear

Description : What type of wear occurs due to an interaction of surfaces due to adhesion of the metals? a) Adhesive wear b) Abrasive wear c) Fretting wear d) Erosive wear

Last Answer : a) Adhesive wear

What is the common name for 2,4,6, Trinitrotoluene (read: tri-nitro-toluene)?

Description : What is the common name for 2,4,6, Trinitrotoluene (read: tri-nitro-toluene)? 

Last Answer : ANSWER: TNT

What alloy is created when you melt and mix all metals on the periodic table in equal portions?

Description : What alloy is created when you melt and mix all metals on the periodic table in equal portions?

Last Answer : You can’t mix them all, their melting points are vastly different.

Metals of high purity are obtained by zone refining. Impurities are more soluble in melt in pure metal.

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

Pick out the wrong statement. (A) A soft magnetic material should have high permeability and small area of hysteresis loop (B) Poisson's ratio of high melting point metals is more than unity (C) Solders generally melt at less than 185°C (D) Steel produced by B.O.F process is ideally suited for manufacturing flat product

Description : Pick out the wrong statement. (A) A soft magnetic material should have high permeability and small area of hysteresis loop (B) Poisson's ratio of high melting point metals is more than unity (C) ... less than 185°C (D) Steel produced by B.O.F process is ideally suited for manufacturing flat product

Last Answer : Option B

The substances that can be used as explosives are 1. phosphorous trichloride 2. mercuric oxide 3. trinitrotoluene 4. nitroglycerine The correct answers are: (a) 1 and 2 (b) 2 and 4 (c) 2 and 3 (d) 3 and 4

Description : The substances that can be used as explosives are 1. phosphorous trichloride 2. mercuric oxide 3. trinitrotoluene 4. nitroglycerine The correct answers are: (a) 1 and 2 (b) 2 and 4 (c) 2 and 3 (d) 3 and 4

Last Answer : Ans:(d)

Give reason Why Diamond is used as abrasive?

Description : Give reason Why Diamond is used as abrasive?

Last Answer : Ans. because it is the hardest substance . All the four valencies are filled.

Ethers are kept in brown bottles because (a) Brown bottles are cheaper than colorless clear bottles (b) Ethers absorb moisture(c) Ethers evaporate readily(d) Ethers are oxidized to explosive peroxides

Description : Ethers are kept in brown bottles because (a) Brown bottles are cheaper than colorless clear bottles (b) Ethers absorb moisture (c) Ethers evaporate readily (d) Ethers are oxidized to explosive peroxides

Last Answer : Ethers are oxidized to explosive peroxides

Peroxides such as hydrogen peroxide and benzoyl peroxide are commonly used in small quantities in over-the-counter preparations such as antiseptics and acne creams. What hazard do peroxides present in higher concentrations? w) explosive x) strongly acidic y) strongly basic z) there is no hazard

Description : Peroxides such as hydrogen peroxide and benzoyl peroxide are commonly used in small quantities in over-the-counter preparations such as antiseptics and acne creams. What hazard do peroxides present in higher concentrations? w) explosive x) strongly acidic y) strongly basic z) there is no hazard

Last Answer : ANSWER: W -- EXPLOSIVE

Modern Society question: Do you feel that being rude, abrasive, sarcastic, or apathetic are the new norms for acceptable behavior and ettiquette?

Description : Modern Society question: Do you feel that being rude, abrasive, sarcastic, or apathetic are the new norms for acceptable behavior and ettiquette?

Last Answer : There has always been rude, abrasive, sarcastic, or apathetic people. I would start with the need of a two paycheck household. A child gets better direction when a parent is home to guide them.

Abrasive exhaust - corrosion

Description : When crossing the curb, I probably stuck in the underside of the car and during the visual inspection I noticed that the exhaust cabin is slightly frayed. On another forum, I learned that the anti- ... given place? Or would the exhaust cell start to corrode? Thank you for your answers and responses.

Last Answer : I wouldn't deal with it personally. Corrosion will sooner or later burn the exhaust and you will change it. Even if it is scratched, it will not significantly reduce the service life of the exhaust.

The removal of paint from electrical equipment, such as generators, should be cautiously undertaken because ____________. A. the mechanical shock of paint removal lessens the dielectric strength of the insulation B. the paint dust is composed of abrasive and semi-conducting materials which impair insulation C. paint dust buildup has a tendency to cause corrosion D. phase windings frequently become isolated from each other due to dust interference at the terminals

Description : The removal of paint from electrical equipment, such as generators, should be cautiously undertaken because ____________. A. the mechanical shock of paint removal lessens the dielectric strength ... phase windings frequently become isolated from each other due to dust interference at the terminals

Last Answer : Answer: B

All of the following items can be used in the maintenance of a D.C. propulsion motor's commutator EXCEPT _______________. A. a canvas wiper B. safety solvent C. abrasive dressing stones D. sandpaper

Description : All of the following items can be used in the maintenance of a D.C. propulsion motor's commutator EXCEPT _______________. A. a canvas wiper B. safety solvent C. abrasive dressing stones D. sandpaper

Last Answer : Answer: B

Epoxy resin is (A) Not used for surface coating (B) A good abrasive (C) An elastomer (D) A polyester

Description : Epoxy resin is (A) Not used for surface coating (B) A good abrasive (C) An elastomer (D) A polyester

Last Answer : (B) A good abrasive

Hot, lumpy & abrasive materials are best transported by using a/an __________ conveyor. (A) Apron (B) Belt

Description : Hot, lumpy & abrasive materials are best transported by using a/an __________ conveyor. (A) Apron (B) Belt

Last Answer : (A) Apron

__________ conveyor is the most suitable for long distance transportation of cold, non-abrasive granular/irregular shape/fine materials. (A) Bucket (B) Belt (C) Screw (D) Apron

Description : __________ conveyor is the most suitable for long distance transportation of cold, non-abrasive granular/irregular shape/fine materials. (A) Bucket (B) Belt (C) Screw (D) Apron

Last Answer : (B) Belt

Which of the following conveyors cannot be recommended for transportation of abrasive materials? (A) Belt conveyor (B) Apron conveyor (C) Flight conveyor (D) Chain conveyor

Description : Which of the following conveyors cannot be recommended for transportation of abrasive materials? (A) Belt conveyor (B) Apron conveyor (C) Flight conveyor (D) Chain conveyor

Last Answer : (C) Flight conveyor

Screw conveyors are (A) Run at very high rpm (B) Suitable for sticky materials (C) Suitable for highly abrasive materials (D) All (A), (B) and (C)

Description : Screw conveyors are (A) Run at very high rpm (B) Suitable for sticky materials (C) Suitable for highly abrasive materials (D) All (A), (B) and (C)

Last Answer : (B) Suitable for sticky materials

Wet sieving is employed, when the product contains __________ materials. (A) Abrasive (B) Large quantity of very fine (C) Coarse (D) Non-sticky

Description : Wet sieving is employed, when the product contains __________ materials. (A) Abrasive (B) Large quantity of very fine (C) Coarse (D) Non-sticky

Last Answer : (B) Large quantity of very fine

Soft & non-abrasive materials can be made into fines by (A) Attrition (B) Compression (C) Cutting (D) None of these

Description : Soft & non-abrasive materials can be made into fines by (A) Attrition (B) Compression (C) Cutting (D) None of these

Last Answer : (A) Attrition

__________ conveyor is the most suitable for short distance transportation of non-abrasive loose materials like garbage, grain, food wastes etc. (A) Flight (B) Screw (C) Drag (D) Belt

Description : __________ conveyor is the most suitable for short distance transportation of non-abrasive loose materials like garbage, grain, food wastes etc. (A) Flight (B) Screw (C) Drag (D) Belt

Last Answer : (A) Flight

. In case of a hammer crusher, the (A) Feed may be highly abrasive (Moh's scale >5) (B) Minimum product size is 3 mm (C) Maximum feed size may be 50 mm (D) Rotor shaft carrying hammers can be vertical or horizontal

Description : . In case of a hammer crusher, the (A) Feed may be highly abrasive (Moh's scale >5) (B) Minimum product size is 3 mm (C) Maximum feed size may be 50 mm (D) Rotor shaft carrying hammers can be vertical or horizontal

Last Answer : (D) Rotor shaft carrying hammers can be vertical or horizontal

Cermets are __________ materials. (A) Refractory (B) Reinforced (C) Abrasive (D) Fully metallic

Description : Cermets are __________ materials. (A) Refractory (B) Reinforced (C) Abrasive (D) Fully metallic

Last Answer : (A) Refractory

Extreme Pressure (EP) additives cause ______ wear in the bearing parts. (a) abrasive (b) corrosive (c) pitting (d) fatigue

Description : Extreme Pressure (EP) additives cause ______ wear in the bearing parts. (a) abrasive (b) corrosive (c) pitting (d) fatigue

Last Answer : (b) corrosive

The property of the bearing material to allow the dust and abrasive particles to get absorbed on the surface of the lining is called (A) Embeddability (B) Conformability (C) Viscosity (D) Endurance limit stress

Description : The property of the bearing material to allow the dust and abrasive particles to get absorbed on the surface of the lining is called (A) Embeddability (B) Conformability (C) Viscosity (D) Endurance limit stress

Last Answer : (A) Embeddability

Extreme pressure causes ______ wear in the bearing parts. a) Abrasive b) Corrosive c) Pitting d) All of the mentioned

Description : Extreme pressure causes ______ wear in the bearing parts. a) Abrasive b) Corrosive c) Pitting d) All of the mentioned

Last Answer : b) Corrosive

Silicon carbide is a/an (A) Adhesive (B) Abrasive (C) Type of glass (D) Brittle material

Description : Silicon carbide is a/an (A) Adhesive (B) Abrasive (C) Type of glass (D) Brittle material

Last Answer : (B) Abrasive

Which of the following is not an abrasive material? (A) Bakelite (B) Pumice (C) Corundum (D) Carborundum

Description : Which of the following is not an abrasive material? (A) Bakelite (B) Pumice (C) Corundum (D) Carborundum

Last Answer : (A) Bakelite

Zeolite is a/an (A) Naturally occuring clay which is capable of exchanging cations (B) Abrasive material (C) Catalyst used in shift conversion (D) None of these

Description : Zeolite is a/an (A) Naturally occuring clay which is capable of exchanging cations (B) Abrasive material (C) Catalyst used in shift conversion (D) None of these

Last Answer : (A) Naturally occuring clay which is capable of exchanging cations

Kaolin is a/an (A) Refractory material (B) Synthetic resin (C) Artificial abrasive (D) Blue pigment

Description : Kaolin is a/an (A) Refractory material (B) Synthetic resin (C) Artificial abrasive (D) Blue pigment

Last Answer : (A) Refractory material

Phenol formaldehyde (A) Employs addition polymerisation (B) Employs condensation polymerisation (C) Is a monomer (D) Is an abrasive material

Description : Phenol formaldehyde (A) Employs addition polymerisation (B) Employs condensation polymerisation (C) Is a monomer (D) Is an abrasive material

Last Answer : (B) Employs condensation polymerisation

hich of the following is the most suitable abrasive for grinding high tensile strength materials? (A) Silicon carbide (B) Corundum (C) Aluminium oxide (D) Boron carbide

Description : hich of the following is the most suitable abrasive for grinding high tensile strength materials? (A) Silicon carbide (B) Corundum (C) Aluminium oxide (D) Boron carbide

Last Answer : Option C

The most commonly used synthetic abrasive is (A) Aluminium carbide (B) Boric acid (C) Silicon (D) All of the

Description : The most commonly used synthetic abrasive is (A) Aluminium carbide (B) Boric acid (C) Silicon (D) All of the

Last Answer : Answer: Option D

Why is steel wool NEVER used as an abrasive to clean soldering tools?

Description : Why is steel wool NEVER used as an abrasive to clean soldering tools?

Last Answer : The strands can fall into electrical equipment being worked on and cause short circuits.

In patients with exposed root surfaces: A. Ask to use low abrasive dentifrices B. It is because of dental hypersensitivity

Description : In patients with exposed root surfaces: A. Ask to use low abrasive dentifrices B. It is because of dental hypersensitivity

Last Answer : A. Ask to use low abrasive dentifrices

Describe Abrasive blast cleaning process with neat sketch.

Description : Describe Abrasive blast cleaning process with neat sketch.

Last Answer : Abrasive Blast Cleaning (Blasting): This method is widely used for removing all classes of scale and rust from forgings, castings, weldments, and heat treated parts. Depending on the finish ... and other material are removed, providing an excellent surface for bonding final finishes.

Which of the following is the natural abrasive

Description : Which of the following is the natural abrasive (A) Al2O3 (B) SiC (C) boron carbide (D) corundum  

Last Answer : Which of the following is the natural abrasive (A) Al2O3 (B) SiC (C) boron carbide (D) corundum  

Name the following: (a) A metal, which is preserved in kerosene. (b) A lustrous coloured non-metal. (c) A metal, which can melt while kept on palm. (d) A metal, which is a poor conductor of heat. -Chemistry

Description : Name the following: (a) A metal, which is preserved in kerosene. (b) A lustrous coloured non-metal. (c) A metal, which can melt while kept on palm. (d) A metal, which is a poor conductor of heat. -Chemistry

Last Answer : a) Sodium is preserved in kerosene. (b) Iodine is lustrous coloured non-metal. (c) Gallium. ‘ (d) Lead.

The snow on the mountains does NOT melt all at once when it is heated by the sum because: (1) It becomes very hard (2) It reflects most of the heat from the sum (3) it has a low specific heat capacity (4) it has a high latent heat of fusion

Description : The snow on the mountains does NOT melt all at once when it is heated by the sum because: (1) It becomes very hard (2) It reflects most of the heat from the sum (3) it has a low specific heat capacity (4) it has a high latent heat of fusion

Last Answer : (2) It reflects most of the heat from the sum Explanation: Newly formed snow reflects about 90 per cent of the sunlight that falls upon it. This means that the sun is powerless to melt clean snow. And when ... on a spring day because of the sun's heat. It melts because of the warm air from the sea.

The energy required to melt one mole of a solid at its melting point is called one of the following. w) the molar heat of fusion x) the molar hear of vaporization y) the molar heat of capacity z) the melting point

Description : The energy required to melt one mole of a solid at its melting point is called one of the following. w) the molar heat of fusion x) the molar hear of vaporization y) the molar heat of capacity z) the melting point

Last Answer : ANSWER: W -- THE MOLAR HEAT OF FUSION

The two reasons which made the Balkans an explosive region after 1871 were: a) The spread of ideas of romantic nationalism and the disintegration of the Ottoman Empire under whose control they were. b) The declaration of independence by European subject nationalities from the Ottomon Empire. c) The support of history and nationalism to be independent. d) All the above

Description : The two reasons which made the Balkans an explosive region after 1871 were: a) The spread of ideas of romantic nationalism and the disintegration of the Ottoman Empire under whose control they were. b) ... Ottomon Empire. c) The support of history and nationalism to be independent. d) All the above

Last Answer : a) The spread of ideas of romantic nationalism and the disintegration of the Ottoman Empire under whose control they were.

Whoever places in or against any letter box provided by the post office for the reception of postal articles any fire, match or light, any explosive, dangerous, filthy, noxious or deleterious substance a) Punishable with fine which may extend to hundred rupees and 1 month imprisonment b) Punishable with imprisonment for a term which may extend to one year or with fine or with both. c) Punishable with fine which may extend to two hundred rupees d) None of these

Description : Whoever places in or against any letter box provided by the post office for the reception of postal articles any fire, match or light, any explosive, dangerous, filthy, noxious or deleterious substance a ... with both. c) Punishable with fine which may extend to two hundred rupees d) None of these

Last Answer : c) Punishable with fine which may extend to two hundred rupees