Hamad Chemistry Basic Concept 24/12/2021 A. moles dm-3 B. moles kg-1 C. gram dm-3 D. none Related Mcqs: One mole of CO2 contains?A. 6.022 x 1023 atoms of oxygen B. 22-gram electrons C. 6.022 x 1023 atms of carbon D. both B. & C.... Isotopes of the same elements has__________________?A. different number of protons B. same number of neutrons C. different number of neutrons D. same mass number (nucleon number)... When 0.5 mole of phosphoric acid is dissolved in aqueous solution how many moles of -ve and +ve ions are collected altogether ?A. 0.5 B. 1 C. 1.5 D. 2... Which of the following properties prove that cathode rays are material in nature_________________?A. they cast shadow B. they possess momentum C. they are negatively charged D. all of the above... When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ?A. phenol is unsaturated B. 2-bromophenol is insoluble in water C. a hydroxy group makes the benzene ring more susceptible to electrophilic attack D. acid-base reaction...
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