The first compound microscope was made in which of the following? The first compound microscope was developed in which year? The first compound microscope was developed by whom? The magnification power of first compound microscope was? Which of the following is increase in the apparent size of an object in microscopy? Which of the following is the measure of clarity of an image? The percentage occurrence of sulphur in the earth crust is ________? The chemical formula of galena is ________? Gypsum is an ore of ________? The shape of monoclinc sulphur is ________? ________ is an unstable allotrope of sulphur? Under ground deposits of sulphur are found 200 meters below the surface of the earth and contain about ________ of free sulphur?
The Valency of sulphur in sodium sulphide (Na2S) is ________? In contact process, the oxidation of SO2 to SO3 takes place at ________? Sulphuric acid can dehydrate glucose into ________? 2H2SO4(conc) + Zn(s) heat------> __________ acid is used as a dehydrating agent and an electrolyte in lead accumulators? H2SO4 acts as a strong oxidizing agent and during the reaction acid itself is reduced to ________? _________ can absorb water from sugar leaving behind carbon? SO2 is oxidized to SO3 during contact process in the presence of a catalyst ________?
The chemical substance used for the process of pickling is ________? The chemical formula of oleum is ________? The number of neutrons in a sulphur atom is ________? Sulphur is a non-metal and a bad conductor of heat and electricity? Sulphur obtained by Frasch method is 100% pure? Plastic sulphur is one of the crystalline allotropes of sulphur? Sulphur is insoluble in water? Sulphur is used in medicines both for external and internal use like purification of blood and a remedy for skin diseases? Sulphur dioxide is reduced to sulphur trioxide during contact process? Moist gases are dried by oleum in contact process?