TS EAMCET p-Block Elements (Groups 15-18) — practice questions
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Practice TS EAMCET p-Block Elements (Groups 15-18) in the app →The general outer electronic configuration of group 15 elements is:Which of the following is **not** a noble gas?Among the halogens (F, Cl, Br, I), bond dissociation enthalpy is **lowest** for:The **inert pair effect** is most pronounced in:Boiling points of hydrogen halides follow which order?Which of the following has a **see-saw** molecular geometry around the central atom?According to VSEPR theory, the shape of a molecule is determined byThe hybridisation of carbon in methane (CH₄) isWhich molecule is non-polar despite having polar bonds?The bond order of the oxygen molecule O₂ (by molecular orbital theory) isA coordinate (dative) bond differs from a normal covalent bond in thatWhich species has sp hybridisation on the central atom?As bond order increases, bond lengthAn ionic bond forms byThe shape of NH₃ is pyramidal rather than planar becauseWhich has the highest dipole moment?Among the following, which is paramagnetic?Formal charge on an atom = Which element is the most reactive of all the elements?What happens when hydrogen and fluorine are mixed in cold darkness?When does hydrogen react explosively with chlorine?Which compound forms when iron reacts with iodine?In interhalogens of the type XYn, what are the possible values of n?What is the maximum number of fluorine atoms that iodine can bond to?Which is the single stable isotope of iodine?Teflon is made of carbon bonded with which element?Which hormones need iodine in trace amounts for their production?Who first used the German term Edelgas for the noble gases in 1900?Which was the first noble gas compound, made by Neil Bartlett in 1962?Which compound was the first stable compound of argon, reported in 2000?Which krypton compound was reported in 1963?Which element cannot be solidified by cooling at atmospheric pressure?Which known substance has the lowest boiling point at 1 atm?In what form do noble gases exist under standard conditions?How do the boiling points of noble gases change down group 18?Which group has the highest ionization potential in each period?Noble gases were once placed in which group because their valence was thought to be zero?To which block does helium belong, unlike the other noble gases?Which oxidation states does xenon show in most of its compounds?Xenon reacts with two moles of fluorine. Which product forms?In 1933 Linus Pauling predicted heavier noble gases would bond with which elements?A noble gas atom trapped in crystal lattice cavities forms a what?Which pair of noble gases does NOT form clathrates with hydroquinone?Bonding in XeF2 is explained using which model?Which noble gas has no identified compound so far?How are neon, argon, krypton and xenon obtained from air?From what is helium extracted on a large scale?Which noble gas is the cheapest?Radon is formed in the lithosphere by alpha decay of which element?The helium hydride ion HeH+ was discovered in which year?A noble gas atom trapped inside a C60 molecule is called what?On Earth, helium mainly originates from which process?After hydrogen, which is the most common element in the universe?Which process is used for industrial production of nitric acid?In the Ostwald process, ammonia is burned to give which product?Commercial concentrated nitric acid is an azeotrope containing what percentage of HNO3?Why is nitric acid stored in brown glass bottles?Which metals are passivated by concentrated nitric acid?Aqua regia, which dissolves gold, is a mixture of nitric acid with which acid?The xanthoproteic test turns proteins with aromatic rings which colour?Which ion is the active reagent in aromatic nitration?Concentrated nitric acid oxidises white phosphorus (P4) to what?Concentrated nitric acid reacts with graphite but not with which form of carbon?Glauber prepared nitric acid by distilling potassium nitrate with which acid?Copper reacting with concentrated nitric acid mainly gives which gas?Which process for ammonia, introduced in 1913, made Ostwald-route nitric acid dominant?What is the usual concentration of commercial concentrated sulfuric acid?What is the formula of oleum, formed when SO3 is absorbed in concentrated H2SO4?Concentrated sulfuric acid dehydrates sugar and leaves which black product?Why do blue copper(II) sulfate crystals turn white in concentrated H2SO4?SO2 to SO3 in the contact process is what kind of reaction?What does it mean that sulfuric acid is hygroscopic?What is sulfuric acid most commonly used to manufacture?Which is a method of producing sulfuric acid?What is the shape of the ammonia molecule?What is the experimental H-N-H bond angle in ammonia?How is ammonia best classified acid-base wise?Dense white fumes appear when ammonia meets HCl. What are they?Ammonia combines with nitric acid to form what?Haber and LeRossignol developed ammonia synthesis from which reactants?Who later developed the industrial method for ammonia based on Haber's work?The name ammonia comes from which deity?What is burnt to detect small ammonia leaks in refrigeration systems?Liquid ammonia dissolves which metals to give coloured conducting solutions?Biologically, ammonia is produced by which process?