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? Vital force theory was proposed by Wholer? Dalton prepared urea from in-organic substances? Carbon is an essential consituent of all organic compounds? Methane molecule has tetra had not geometry?
A molecule of propane contains four carbon atoms and ten hydrogen atoms? -OH is functional group and represents the alchohal? Organic compounds have high melting and boiling points? An atom or group of atom that determines the characteristic properties of an organic compound is called? Electrical conductivity of organic compounds are? In all organic compounds the essential element is? Organic compounds made up of only carbon and hydrogen are called? In 1828 a scientist prepared urea from in organic substances?
-OH is the functional group of the family called? In saturated hydrocarbon all carbon, carbon bonds are? A molecule has a tetrahedral geometry with an angle of 109? 50 between each of H-C-H bond? The general chemical formula of alkane is CnH2n+2? When ethyne gas is passed through a red hot iron tube it polymerizes to? Which gas is used in ripening of fruits and vegetables? Ethane gas is used as a general anaesthesia? If ethane is passed through bromine water then the colour of bromine water is discharged? Petroleum and natural gas are two big sources of energy?