TS EAMCET Hydrogen and its Compounds — practice questions
60 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice TS EAMCET Hydrogen and its Compounds in the app →What is the atomic number of hydrogen?Under standard conditions, which formula represents dihydrogen?The name hydrogen literally means which of the following?Who identified hydrogen gas as a distinct substance in 1766 to 1781?Hydrogen makes up about what share of all normal matter in the universe?How many neutrons does a protium nucleus contain?The nucleus of deuterium contains which particles?Beta decay of tritium produces which nuclide?Which common use of tritium relies on its radioactivity?Which symbol is sometimes used for deuterium instead of 2H?By IUPAC naming, what is the hydrogen anion H- called?What is the general IUPAC name for the cation H+?An antihydrogen atom consists of which pair of particles?Burning one mole of hydrogen to liquid water releases about how much heat?Hydrogen forms explosive mixtures with air over which concentration range?Why are flame detectors used where hydrogen is handled?Who first liquefied hydrogen, in 1898, using his vacuum flask?Metallic hydrogen is believed to exist deep within which planet?What approximate H–H bond dissociation energy does dihydrogen have?What is the thermodynamic basis for the low reactivity of H2?Hydrogen reacts with bromine to form HBr through which type of mechanism?Adding H2 across alkenes and alkynes is known as what?Which catalyst lets hydrogenation of alkenes proceed at room temperature?Which pair of oxidation states can hydrogen show?Compounds where hydrogen has oxidation state −1 are called what?Heated H2 reacts with alkaline earth metals to give ionic hydrides of which formula?Which gas is released when ionic hydrides react with water?Ionic hydrides are also known as what type of hydrides?Lower pH values indicate a higher concentration of which ion?In the Brønsted–Lowry theory, a base is defined as what?In stars more massive than the Sun, hydrogen fusion mainly proceeds through what?Which process produces most of the world's industrial hydrogen?In the first step of steam reforming, methane and steam yield H2 and what?Synthesis gas from steam reforming is often used directly to make what?In the Haber process, the hydrogen is generated from what?Commercial water electrolyzers typically use which setup?Hydrogen made by electrolysis using renewable energy is commonly called what?Electrolysis of brine gives chlorine and which gaseous co-product?What is the colour of pure liquid hydrogen peroxide?What kind of bond links the two oxygen atoms in H2O2?Hydrogen peroxide slowly decomposes in light into which products?How is hydrogen peroxide typically stored?The extrapolated boiling point of pure hydrogen peroxide is about what?Why is hydrogen peroxide more viscous than water?A 20-volume H2O2 solution is fully decomposed. How much O2 does 5 mL give?Which process makes hydrogen peroxide almost exclusively today?Breakdown of H2O2 into H2O and O2 is which type of reaction?Which substance catalyses decomposition of hydrogen peroxide?Under which condition is H2O2 unstable?In acidic solution, H2O2 mainly acts as what?In 2 MnO4− + 5 H2O2 + 6 H+ forming Mn2+, how many moles of O2 result?Hard water forms when water percolates through deposits of what?Which household sign suggests water is hard?The deposit hard water leaves in kettles and heaters is called what?Which cations are commonly responsible for water hardness?Which compound, long used for laundry, acts as a water softener?In ion-exchange softening, each Ca2+ is replaced by how many Na+ ions?Which kind of water is soft because it has few Ca2+ and Mg2+ ions?Which process is the most cost-effective way to produce heavy water?How does heavy water differ from light water in dissociation?