Description : A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is (a) 54°C (b) 327°C (c) 108°C (d) 654°C (e) 600°C
Last Answer : Answer : b
Description : What is the melting point of copper ?
Last Answer : Copper melting point 1083 .
Description : Which of the following metals has least, melting point? (1) Gold (2) Silver (3) Mercury (4) Copper
Last Answer : (3) Mercury Explanation: The melting point of the given metals (in Celsius) are:- Gold: 1063; Silver: 961; Copper: 1083; Mercury: 38.86. Mercury is the only elemental metal known to melt at a generally cold temperature.
Description : Since fuse elements are made of zinc or any alloy of tin and lead, the melting point of the fuse element must be _____________. A. higher than that of copper B. lower than that of copper C. equal to that of copper D. reached when the conductor it is protecting becomes 'white hot.'
Last Answer : Answer: B
Description : Which of the following is a low melting point metal? (A) Stainless steel (B) Wrought iron (C) Tin (D) Copper
Last Answer : (C) Tin
Description : Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process? (A) Galvanising (B) Tinning (C) Sherardizing (D) None of these
Last Answer : (C) Sherardizing
Description : Which of the following material has the highest melting point (A) Copper. (B) Aluminium. (C) Tungsten. (D) Gold.
Last Answer : (C) Tungsten.
Description : Which of the following metals has least melting point ? (1) Gold (2) Silver (3) Mercury (4) Copper
Last Answer : Mercury
Description : Brazing filler metal used for joining steel plates (A) Melts below the melting points of base metals (B) Melts below 300°C (C) Is copper phosphorous alloy
Last Answer : (A) Melts below the melting points of base metals
Description : The filament of an electric lamp becomes white hot but the lead-in wires holding the filament are only slightly heated because they (a) have smaller current passing through them (b) have very low resistance (c) have higher melting point (d) are made of black iron
Last Answer : Ans:(b)
Description : The material used for a fuse wire should have (a) high resistivity (b) high ductility (c) high melting point (d) low melting point
Last Answer : Ans:(d)
Description : Metals are good conductors of electricity because (a) The contain free electrons (b) The atoms are lightly packed (c) They have high melting point (d) All of the above
Description : The point at which the solid, liquid and gaseous forms of a substance co-exist is called its (a) boiling point (b) melting point (c) triple point (d) freezing point
Last Answer : Ans:(c)
Description : Which of the following characteristics is not typical of ionically bonded crystals? (a) Has no sharp melting point (b) Cleave into definite cleavage planes (c) Conducts when melted (d) Shatters when crystal is distorted
Last Answer : Ans:(a)
Description : The point at which the solid, liquid and gaseous forms of a substance co-exist is called its (a) Boiling point (b) Melting point (c) Triple point (d) Freezing point
Description : Alloy having low melting point?
Last Answer : Solder
Description : Melting point of gold?
Last Answer : 10640C (19470F)
Description : The metal with lowest melting point (-39'C)?
Description : Melting point of Iron?
Last Answer : 1811K
Description : Heating the ore below its melting point in the absence of air I to remove volatile impuri- ties is known as?
Last Answer : Calcination
Description : Method of separating metals which have low melting point I from an ore is?
Last Answer : Liquation
Description : The metal having lowest melting point?
Description : The melting point of ice is-----? A. 00C (Answer) B. 1000C C. 40C
Last Answer : A. 00C (Answer)
Description : Covalent network crystals have-------? A. higher melting point then molecular crystals (Answer) B. lower melting point then molecular crystals C. discrete molecules linked by Van der waals forces D. hydrogen bonding
Last Answer : A. higher melting point then molecular crystals (Answer)
Description : Reaction between X and Y forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z? A) Has high melting point B) Has low melting point C) Conducts electricity in molten state D) Occurs as solid
Last Answer : B) Has low melting point
Description : Why does the temperature of a substance remain constant during its melting point or boiling point? -Maths 9th
Last Answer : The extra heat supplied to the boiling water is used in the vaporization of a liquid, which is known as the latent heat of vaporization. That's why the temperature of a substance remains constant during its melting or boiling.
Last Answer : The temperature of a substance remains constant during melting and boiling points till the completion of melting and boiling. It is because substance makes use of latent heat of fusion ... between particles of liquid to change into vapours during boiling. Therefore, temperature remains constant.
Description : Which of the following has highest melting point? Ni, Fe, Pt, W. -Chemistry 9th
Last Answer : i think all are equal
Description : Which substance does not have a melting point? -General Knowledge
Last Answer : The answer is 'Glass'
Last Answer : Mercury exists in liquid state hence, it has no melting point.
Description : What is the melting point of FeCl3 F?
Last Answer : The melting point of ferric chloride is 307.6 d. She. Or 585.68 d. Fahrenheit. (Approximately)
Description : What is the melting point of titanium ?
Last Answer : Titanium has a melting point of 1677 degrees Celsius.
Description : What is the melting point of scandium ?
Last Answer : Scandium has a melting point of 1541 degrees Celsius.
Description : What is the melting point of helium ?
Last Answer : The melting point of helium is minus 272 degrees Celsius.
Description : What is the melting point of hydrogen ?
Last Answer : The melting point of hydrogen is minus 259 degrees Celsius.
Description : What is the melting point of calcium ?
Last Answer : The melting point of calcium is 848 degrees Celsius.
Description : What is the melting point of potassium ?
Last Answer : The melting point of potassium is 64 degrees Celsius.
Description : What is the melting point of argon ?
Last Answer : Argon melting point - 189 degrees Celsius.
Description : What is the melting point of chlorine ?
Last Answer : Melting point of chlorine - 101 degree Celsius.
Description : What is the melting point of sulfur ?
Last Answer : The melting point of sulfur is 113 degrees Celsius.
Description : What is the melting point of phosphorus ?
Last Answer : The melting point of phosphorus is 44 degrees Celsius.
Description : What is the melting point of silicon ?
Last Answer : Silicon has a melting point of 1420 degrees Celsius.
Description : What is the melting point of aluminum ?
Last Answer : Aluminum has a melting point of 660 degrees Celsius.
Description : What is the melting point of magnesium ?
Last Answer : Magnesium has a melting point of 650 degrees Celsius.
Description : What is the melting point of sodium ?
Last Answer : The melting point of sodium is 98 degrees Celsius.
Description : What is the melting point of neon ?
Last Answer : Neon melting point - 249 degrees Celsius.
Description : What is the melting point of fluorine ?
Last Answer : Melting point of fluorine - 220 সেল C.
Description : What is the melting point of oxygen ?
Last Answer : Melting point of oxygen - 210 degree Celsius.
Description : What is the melting point of carbon ?
Last Answer : The melting point of carbon is 3500 degrees Celsius.