0% 0 Chemistry Quiz 21 1 / 50 Which one of the following is also known as tartaric acid ? 2 3-dihydroxy butance 1 4 -dioic acid 2 3 -dihydroxy butanedioic acid 2 3 -dihydroxy butanioc acid 2 2 -dihydroxy butanoic acid 2 / 50 FeSO4 forms brown ring with________________? NO NO2 N2O N2O3 3 / 50 The sample of isotopes of an element which needs not to be vaporized in the vaporization chamer_________________? All Gas Liquid Volatile solid 4 / 50 Rate expression for ammonia synthesis is___________________? Kc=x2/(a-x)(b-x) Kc=x2/v(a-x) Kc=4?2/(a-2x)2(b-x) Kc=4x2v2/(a-x)(b-3x)3 5 / 50 When water freezes at 0?C its density decreases due to_______________? Change of bond angles Change of bond length Cubic structure of ice Empty space present in the structure of ice 6 / 50 The formula C6H5-CO-CH3 represents_______ ? Phenyl acetate Acetophenone Acetic acid Acetone 7 / 50 Which is the unit of (K) rate constant for zero order reaction ? mol dm-3 s-1 mol-2 dm6 s-1 s-1 mol-1 dm3 s-1 8 / 50 Which one of the following is not a good leaving group ? OH- Cl- HSO4- Br- 9 / 50 The volume occupied by 2.8 g of N2 at STP______________________? 22.4 dm3 112 dm3 2.24 dm3 1.12 dm3 10 / 50 In primary alkyl halides the halogen atom is attached to a carbon which is further attached to how many carbon atoms__________________? two three four one 11 / 50 The solution which distils over with change in composition________________? azeotropic solution ideal solution zeotropic solution non-ideal solution 12 / 50 If a graph is plotted between temperature on x-axis and volume on y-axis for 1 mole of gas then we get straight line which cuts the temperature exis at________________? ?273.16 K ?273.16?C 273.16K 0?C 13 / 50 The reciprocal of the coefficent of viscosity is called__________? Specific gravity Fluidity Density Absorbance 14 / 50 How many electrons are there in benzene to form delocalized electron cloud________________? 8 3 4 6 15 / 50 Energy released or absorbed when electrons are added in atom is_________________? Ionization potential Activation energy Electronegativity Electron affinity 16 / 50 The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is___________? Gay Lussac?s law Raoult?s law Henry?s law Dalton?s law 17 / 50 Vander Waals forces are stronger in_______________? I2 Cl2 F2 Br2 18 / 50 In a period the atomic radius ? Increases Decreases First decreases then increases Remain same 19 / 50 The structure of H2O2 is_______? Spherical Non- polar Linear Planar 20 / 50 Polyester resins are the product of the reaction of__________________? Styrene in the presence of catalyst Epichlorohydrin with diphenylol propane Polyamines with aliphatic dicarboxylic acids Dihydric alcohol and dicarboxylic aromatic acids 21 / 50 Which of the following is not a use of silicon ? Antifreeze Water repellent Lubricants Hydraulic brakes 22 / 50 On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________? black pink yellow brick red 23 / 50 Which of the following solids show anisotropy___________________? Plastic None of the above Glass Rubber 24 / 50 General formula of alkyne is______________? CnH2n ? 2 CnH2n + 2 CnH2n + 2 CnH2n 25 / 50 Who used the term Concentrationwindow to draw the arbitrary lines of demarcation Schwartz Einstein Dr.A.Walash S.E.Manhan 26 / 50 Ozone hole is substantial depletion of ozone in every year during__________________? Nov ? Dec Aug ? Nov Dec ? Jan Sep ? Nov 27 / 50 Gypsum is______? CaSO4.3H2O CaSO4.1/2H2O CaSO4 CaSO4,2H2O 28 / 50 Measurement of the degree of polarity is___________________? Ionization energy Ionic character Dipole moment Electron affinity 29 / 50 A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore? 74% Fe 75% Fe 77% Fe 78% Fe 30 / 50 In electrolytic solution conductance of electricity is due to _____________________? free electrons electrodes metals ions 31 / 50 Addition of 2% gypsum in cement________________? all of the above Triggers hydration Prevents rapid hardening Triggers hydrolysis 32 / 50 The melting points and boiling points upto meddle of 3d- series ____________________? increases decreases no regular trend remain same 33 / 50 When 6d orbital is complete the entering electron goes into_________________? 7f 7s 7p 7d 34 / 50 Sodium carbonate is produced by____________? haber process Amonia solvay process decons process lead chamber process 35 / 50 Isotopes differ in_________________? chemical properties arrangement of electrons in orbitals all of the above properties which depend upon mass 36 / 50 Which one of the following halogens is present in Teflon________________? I2 Cl2 Br2 F2 37 / 50 Which of the following is not an ester_________________? octyl acetate sodium butyrate amyl acetate isobutyle formate 38 / 50 Iodine is solid due to_________________? Large value of dipole moment High polarizability Strong covalent bond Strong hydrogen bonding 39 / 50 1 mole of electron has mass in microgram_________________? 5.5 x 10-4 1.673 x 10-3 1.84 x 10-4 1.008 x 10-3 40 / 50 Unit of heat in SI system is________________? Cal KCaL J GJ 41 / 50 In the purification of portable water the coagulant used is_________________? alum barium sulphate nickel sulphate copper sulphate 42 / 50 In a molecule of carbon monoxide, what are the formal charges on the two atoms? Carbon=0, Oxygen=0 Carbon= -1, Oxygen= +1 Carbon=0, Oxygen= -1 Carbon= +1, Oxygen= -1 43 / 50 Incomplete oxidation of methane in the limited supply of air forms ? CO + H2O + C CO + H2 + C CH3OH CO2 and H2O 44 / 50 The coloured glassy mass in borax bead test is due to the formation of___________________? metal silicate metal borate metal meta borate metal boride 45 / 50 AgCl dissolved with conc (2?10-2) Ksp will be__________________? 3.6 x 10-5 3.6 x 10-6 7.2 x 10-6 4 x 10-4 46 / 50 Which one of the following alcohols will be formed when ethyl magnesium bromide reacts with acetone ? dihydric alcohol secondary alcohol tertiary alcohol primary alcohol 47 / 50 The number of ions produced by [Pt(NH3)]Cl2? 5 4 3 2 48 / 50 Nitronium ion is___________________? NO3 NO2+ NO NO2- 49 / 50 Space around nucleus where finding probability of electrons is maximum is called ____________________? Electron cloud Orbit is elliptical subshell Orbital 50 / 50 The molar mass of an organic acids is determined by____________? Depression of freezing point Osmosis method Volumetric method Victor Meyer?s method Provide Your Information Your score is The average score is 0% LinkedIn Facebook Twitter 0% Restart quiz Send feedback Share on facebook Facebook Share on twitter Twitter Share on whatsapp WhatsApp PrevChemistry Quiz 20 Chemistry Quiz 22Next
