Quiz Hard 2 Categories Quizzes 0 Quiz Hard 2 1 / 30 of all the nobel gasses, easily available gases Xe and Kr Ne and Ar He and Ne He and Ar 2 / 30 Which of the following term is not used in pulping? Copper number Kappa number Bromine Number Octane number Permanganate number 3 / 30 In each period, the most electropositive element belongs to group 18 17 1 2 4 / 30 Mutarotation is exhibited by All polysacchrides All monosacchrides All disacchrides All carbohydrates 5 / 30 The ionic product equilibirium contant is Kc Ka Kb Kw 6 / 30 Given: A + 3B -----2C + D This reaction is first order with respect to reactant A and second order with respect to reactant B. If the concentration of A is doubled and the concentration of B is halved, the rate of the reaction would by a factor of Decrease 4 Decrease. 2 Increase, 4 Increase, 2 not change 7 / 30 The percentage of nitrogen in ammonia is 0.92 55 percent 32 percent 0.25 82 percent 8 / 30 Zero group of the periodic table consisti of five elements eight element six elements four elements 9 / 30 Which of the following is not a form of cellulose Jute Hemp Cotton Silk 10 / 30 Which of the following statements are true? 1.Reactions with more negative values of deltaG° are spontaneous and proceed at a higher rate than those with less negative values of deltaG.. 2. The activation energy, E., is usually about the same as deltaE for a reaction 3.The activation energy for a reaction does not change significantly as temperature changes. 4. Reactions usually occur at faster rates at higher temperatures. 1,2,3,4 3,4 1,2,4 1,2,3 2,3,4 11 / 30 Pick out the incorrect statement for transition metals 5d-elements have higher energies than 3d or 4d elements Zr and Hf have almost identical atomic and ionic radii They have low melting and boiling point. (or low enthalpies atomization) They form interstitial compounds 12 / 30 The point at which the reaction is observed to be complete is called The triple point The end point The equilibrium point The equivalence point 13 / 30 The three isotopes of hy-drogen differ from one another in Nuclear mass Nuclear charges no. of protons atomic number 14 / 30 Which of the following techniques used for cleanup of samples prior to introduction into chromatographic column? Both c and d Solid-phase extraction TLC Paper chromatography Solvent extraction 15 / 30 Bioconversion of biomass can be used for Alcohol productions all these Power production Methane production Heating purposes 16 / 30 In the metallurgy of iron, when limestones is added to the blast furnance , the calcium ions end up with gangue calcium carbonates metallic calcium Slag 17 / 30 The ring structure of glucose doesnot explain Sterochemistry of Glucose No reaction with Shiff's reagent Mutarotation phenomenon Existence of two forms of glucose 18 / 30 A chemical reaction resulting in a change in the electric charges on the reacting particles may be called as Elimination reaction Add ion reaction redox reaction chain reaction 19 / 30 The titration involving oxidation-reduction reaction is called Acid-base titration Complex titration Redox titration Simplex titration 20 / 30 The commnly used catalyst is the manufacture of H2SO4 all these V2O5 Platinized asbests and MgSO4 Fe2O3 with a little CuO 21 / 30 which of the following compound has highest boiling point H2Te H2Se H2O H2S 22 / 30 Which one of the following statements is not Zn, Cd and Hg are transition metals Transition metals form alloys Transition metals form complexes K2[PtCl6] is a well known compound, but corresponding nikel compound is not known. 23 / 30 Which elements out of the following do not produce hydrogen on treatment with caustic soda? I (Zn): II (Sn); III (Mg): IV (Cu); 1 and 4 3,4 2,4 4,5 24 / 30 Which of the following detector is used a GC analysis Thermal conductivity detector Mass spectrometer The electron capture detector Flame ionization detector 25 / 30 What is the lowest-temperature diffusion-hardening process and does not require a quench? melting heat-treating nitriding carburizing tempering 26 / 30 Select a basic amino acid Alanine Glycine Lysine Cyatine 27 / 30 used in Geiger counter to radiactivitry Kr ne Ar He 28 / 30 Electronagitivity of oxygen is 3.5 2.4 2.5 2.1 29 / 30 Considering the elements F,CI, O and N. the correct order of their chemical reactivity in terms of oxidizing property is Cl>F>O>N O>F>N>Cl F>O>Cl>N F>CL>O>N 30 / 30 The speed of a chemical reaction Between ions in aqueous solution is extremely rapid because there are no bonds that need to be broken. Is independent of the amount of contact surface of a solid involved. Is constant no matter what the temperature is Varies inversely with the absolute temperature. Between gases should in all cases be extremely rapid because the average kinetic energy of the molecules is great Your score is Share: Quiz Dad Previous post Quiz Hard 1 October 1, 2022 Next post Quiz Hard 3 October 1, 2022 You may also like Quiz Hard 5 1 October, 2022 Quiz Hard 4 1 October, 2022 Quiz Hard 3 1 October, 2022