Quiz Hard 2 Categories Quizzes 0 Quiz Hard 2 1 / 30 Sanger's reagent is Carbobenzyloxy chloride Dimethyl amino sulphonyl chloride 2,4-dinitrophenyl hydrazine 1-Fluoro-2,4-dinitrobenzene 2 / 30 Which of the following statements is NOT true? Pure iron does not have significant industrial use because it is too weak and soft . Steel is an alloy of carbon and iron with limits on the amount of carbon (less than 2%) both a and d Steel is made by reducing oxide ore of iron by therrnuchemical reactions in a blast furnace or direct reductions vessel About 10% of the earth's crust is iron. 3 / 30 Drying agent which react with CO2 and removes water vapours is CaCl2 Ca(Na3)2 CaCO3 CaO 4 / 30 Which of the following process involves the use of organic compound no an electron acceptor? Aerobic respiration Glycolsis Fermentation Anaerobic respiration 5 / 30 What is the purpose of molybdenum in steel alloying? To increase brittleness To increase dynamic and high-temperature strength and hardness To increase corrosion and resistance all of the above To reduce brittleness. combine with sulfur 6 / 30 Hypo is used in photography to Remove reduced silver Remove undecomponed silver bromide as soluble complex Remove adore in silver salt Reduce AgBr to metallic silver 7 / 30 In which of the following characteristics doo hydrogen resemble halogens? H atoms contemn one electron each Hydrogen has three isotopes Hydrogen in the lightest gas Hydrogen forms ionic hydrides with alkali metal 8 / 30 Which of the following is incorrect? H2O2 acts both an oxidising as well as reducing agent in acidic medium H2O2 is a planar molecule Water is more polar than H2S Heavy water is produced by the exhaustive electrolysis of water made acidic 9 / 30 What is the colour of pulp obtained from chemical pulping' brown blue gray black red 10 / 30 Which of the following techniques is used to separate a mixture of cations? size exclusion exclusion chromatography FPLC GC Ion-exchange chromatography 11 / 30 The compound insoluble in acetic acid Calcium oxalate Calcium carbonate Calcium oxide Calcium hydroxide 12 / 30 A catalyst Changes the equilibrium concentration of the products. Always increases the activation eneru for a reaction. Actually participates in the reaction. Does not affect a reaction energy path Always decreases the rate for a reaction 13 / 30 Compounds formed when noble gases entrapped in the cavities of crystal lattices of certain organic and inorganic compounds are called interstitial compounds picrates hydrates clathrates 14 / 30 Which of the following carbonates decomposes at the highest temperature CaCO3 MgCO3 SrCO3 BaCO3 15 / 30 H2SO4 is used in none in the purificatio goold and silver in the dental filling In the preperation of aqua region 16 / 30 Pick out the ideal conditions needed for the manufacture of H2SO4 by contact proem low temperature, low concentration of reactant and low pressure Low tempernture, high pressure and high concentration of reactants Low temperature, low pressure and high concentration of reactants High temperature, high pressure and high concentration of reactants 17 / 30 What is considered as the general purpose oldest type and widely used cast iron? Gray iron Black iron Ductile iron Alloy iron Malleable iron 18 / 30 . Which one of the following is not formed when an electric discharge passes through helium? He2 HeH2+ HeH+ He2+ 19 / 30 Gold dissolve in aqua regia forming? HAuCl4 AuCl AuCl3 Au(NO3)3 20 / 30 What do you call earth and stone missed with the iron oxides? Ore residue Gangue Magnetite Hematite 21 / 30 Among the elements of second period, the element with highest melting point belongs to group 1 17 14 18 22 / 30 The specific gravity of H2SO4 is 1.81 1.57 1.17 1.37 23 / 30 Although glucose has an aldehydic group it doesnot restore pink color There is no aidehydic group in glucose Aldehydle group is involved in hemiacetal formation The steric hindrance I effect of hydroxyl group 24 / 30 Acetylation of fructose yeilds a Pentacetyl derivative Tetraethyl derivative Monodactly derivative Diacetyl derivative 25 / 30 At high temperature nitrogen combine with calcium carbide to give Calcium cyanide Calcium nitride Calcium cyanamide Calcium carbonate 26 / 30 The oxidation number of Xe in XeOF2 is 3 1 2 27 / 30 Which of the following is domain of industrial ecology? the consumer the water processor The materials extractor all these The materials processor 28 / 30 Oxytocin,a pituitary hormone is Polypeptide Amino acid Comjugated protien Protien 29 / 30 Which pair of species can undergo chemical reaction with each other ? CO + NO LiH and H2O CO2 and HCl CaH2 and SiH4 30 / 30 The ionic product equilibirium contant is Kb Kc Kw Ka 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
