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 : Which of the following elements has the lowest melting point? (1) Bromine (2) Zinc (3) Calcium (4) Lead
Last Answer : (1) Bromine Explanation: Bromine is a chemical element with symbol Br and atomic number 35. Thus, the melting and boiling points of bromine are intermediate between those of chlorine and iodine.
Description : Which of the following metal has the lowest melting point? (1) Lead (2) Lithium (3) Potassium (4) Sodium
Last Answer : (3) Potassium Explanation: Here, Potassium has the lowest melting point in the given options i.e. 63.5° C. Helium has the lowest melting point of -272.2° C.
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 has the highest density and the lowest melting point? (A) Stainless steel (B) Titanium (C) Lead (D) Aluminium
Last Answer : (C) Lead
Description : Pick out the wrong statement. (A) Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators (B) Gun powder comprises of 75% salt petre, 15% charcoal ... TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being
Last Answer : (D) TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being
Description : Sulphur melting pit in the sulphuric acid plant is made of (A) Lead lined stainless steel (B) Cast iron (C) Steel or cement-brick lined (D) Hard wood
Last Answer : (C) Steel or cement-brick lined
Description : Lead pipe is (A) Especially resistant to solutions containing H2SO4 (B) Usually joined by burning (e.g. by melting to adjacent pieces with a torch) (C) Having very low elastic limit resulting in permanent deformation from either mechanical or thermal strain (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C
Description : The metals with very low melting points which melts by the temperature of palm are A) Sodium and potassium B) Lead and magnesium C) Aluminium and zinc D) Gallium and caesium
Last Answer : D) Gallium and caesium
Description : Which of the following low melting alloy containing bismuth and lead is used for electric fuse? (A) Wood's metal (B) Babbitt metal (C) Monel metal (D) Duralumin
Last Answer : Option A
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.
Description : What is the melting point of boron ?
Last Answer : Boron has a melting point of 2300 degrees Celsius.
Description : What is the melting point of beryllium ?
Last Answer : The melting point of beryllium is 1283 degrees Celsius.
Description : What is the melting point of lithium ?
Last Answer : Lithium has a melting point of 179 degrees Celsius.
Description : What is the melting point line ?
Last Answer : The straight line found at the temperature of melting point is called melting point line.
Description : What is the melting point of pure sulfur ?
Last Answer : The melting point of pure sulfur is 119 স C.
Description : What is the melting point of urea ?
Last Answer : The melting point of urea is 133 degrees Celsius.
Description : What is the melting point of ice or at what temperature does ice melt into water ?
Last Answer : : The melting point of Berber becomes ice water at a temperature of 0 সেল C or 0 সেল C.
Description : What is the melting point ?
Last Answer : : The temperature at which a solid substance turns into a liquid under normal pressure ( 1atm) is called the melting point of that substance.
Description : What is the melting point of sugar ?
Last Answer : The melting point of sugar is 160 degrees.
Description : What is the melting point of brass ?
Last Answer : The melting point of brass is 800 to 1000 degrees.
Description : What is the melting point of zinc ?
Last Answer : Melting point of zinc 418 .
Description : What is the melting point of copper ?
Last Answer : Copper melting point 1083 .
Description : What is the melting point of gold ?
Last Answer : Gold melting point 1063 .
Last Answer : Sulfur melting point 115 .
Description : What is the melting point of mercury ?
Last Answer : Mercury melting point - 38.