0% 0 Chemistry Quiz 10 1 / 50 In CCI4 I2 shows________________? Purple colour Red colour Yellow colour Blue colour 2 / 50 Shielding effect across the period ________________? None Constant Decreases Increases 3 / 50 Which order of reaction obeys the relation t1/2 = 1/Ka____________________? Second order Third order Zero order First order 4 / 50 Which one of the following is a buffer solution ? blood solution of CuSO4 glue brine 5 / 50 If R is the Rydberg constant for hydrogen, then wave-number of the second line in the Lyman series is _________? R/2 2 R R/4 3R/4 6 / 50 The value of activation energy is primarily determined by_______________? Effective collision Chemical nature of reactants and products Concentration of reactants Temperature 7 / 50 Oxygen does not react with all except_________________? Water Acid Metals Alkali 8 / 50 The rate of E1 reaction depends upon______________________? the concentration of nucleophile base the concentration of substrate as well as nucleophile the concentration of substrate as well as nucleophile the concentration of substrate 9 / 50 Sharing of 1 electron pair by one specie forms_________________? Hydrogen bond Double covalent bond Single covalent bond Coordinate covalent bond 10 / 50 For which system does the equilibrium constant Kc has unit of (concentration)-1__________________? PCI5 PCI3+CI2 2NO2 N2H4 N2+3H2 2NH3 H2+I2 2HI 11 / 50 One fathom is equal to:__________? 6 feet 100 cm 6 meters 60 feet 12 / 50 Free neutron changes into proton with the emission of__________________? Meson Neutrino Electron Both A & B 13 / 50 Spectrum is produced due to________________? Different wavelength Different intensities Different colours all have little contribution 14 / 50 Which one of the following salt does not hydrolyzed________________? Na2SO4 AlCl3 NH4Cl CuSO4 15 / 50 I3( Tri-iodine) has shape_________? Linear Both A and C Square bipyramidal Trigonal bipyramidal 16 / 50 Hydrogen bonding is involved in____________________? All Biological molecules Solubility Cleansing action of detergents 17 / 50 Group VIB of transition elements contains___________________? Fe Ru Os Mn Te Re Cr Mo W Zn Cd Hg 18 / 50 Bleaching powder is not used for bleaching________________? Paper pulb Linen Cotton Costly fabrics 19 / 50 Ideal gasses have all the following characteristics except ? Collisions among the molecules of an ideal gas are perfectly elastic All of the above are correct The molecules occupy no space Absence of intermolecular forces 20 / 50 A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula? C6H12O6 C2H6O C2H5O C6H18O3 21 / 50 Solubility of KCIO3 gives__________________? continuous and falling solubility curve discontinuous and rising solubility curve discontinuous and falling solubility curve continuous and rising solubility curve 22 / 50 Enzynies that catalyze the transfer of groups within molecule are called_________________? Ligases Isomerases Lyases Transferases 23 / 50 The element cesium bears resemblance with________________? None of the above Both of the above Cr Ca 24 / 50 The element used for the formation of alloys is__________? Iron Chromium Calcium Mercury 25 / 50 Splitting of spectral lines when atoms are subjected to strong electric filed is called_________________? Compton effect Stark effect Photoelectric effect Zeeman effect 26 / 50 The by-product of the process of Saponification is___________? Sodium hydroxide Glycerol Glycol Methanol 27 / 50 Which of the following aldehydes shows rapid reaction with sodium nitroprusside ? formaldehyde acetone benzaldehyde accetaldehyde 28 / 50 Commercial detergents contain mainly _____________? RONa RCOON RSNa ROsO3Na 29 / 50 Acid present in acid rain may be_________________? H2SO4 both A and B none of the above HNO3 30 / 50 In solvent extraction ether is used to separate products of organic synthesis from________________? iodine hydrochloric acid gases water 31 / 50 The oxides of beryllium BeO is_______________? Neutral Basic Amphoteric Acidic 32 / 50 Electron was discovered by? J.J Thomson Michael Faraday James Maxwell Yuri Gagarin 33 / 50 Organic compounds that are essentially nonpolar and exhibit weak intermolecular forces have________________? Low vapour pressure Low melting points High electrical conductivity High boiling points 34 / 50 Which one of the following makes the bulk of hydrospheres content ? fresh water lakes and ponds glaciers & icecaps oceans All have equal distribution 35 / 50 Wavelength of electron was verified by_________________? Moseley Davisson and Germer Roentgen Einstein 36 / 50 which Compound Destroy The OZONE ? CFCs CH3COOH None Of These BOTH A & B 37 / 50 Which one exhibits aldol condensation____________________? Cl3CCHO CH3COCH3 C6H5CHO HCHO 38 / 50 Which of the following will not form crystalline structure with opporitely charged ions_________________? Ca2+ Mg2+ H+ H- 39 / 50 Avogadros number may represent_________________? number of particles volume of particles All of the above mass of particles 40 / 50 Which of the following will not change the concentration of ammonia at the equilibrium ? Decrease of temperature Addition of catalyst Increase of volume Increase of pressure 41 / 50 Which of the following is used as water disinfectant to avoid the formation of toxic compounds_________________? Cl2 both B & C O3 ClO2 42 / 50 Geometry of molecule will be pyramidal if the outer post shell of the central atom has___________________? 3 lone pair 1 bond pair 2 bond pair 2 lone pair 3 bond pair one lone pair 1 bond pair 3 lone pair 43 / 50 Which one of the following is not the mono isotopic element ? iodine nickel arsenic uranium 44 / 50 Treating phenol with formaldehyde in the presence of dilute base forms Bakelite. The process involved is_________________? condensation polymerization elimination oxidation additional polymertization 45 / 50 Which one is false for evaporation ? Continuous Surface phenomenon Exothermic Cause cooling 46 / 50 Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ? potassium nitrate urea diammonium phosphate calcium superphosphate 47 / 50 What is the relative rate of effusion of CO and CO2 ? CO is 1.25 times faster than CO CO is 1.25 times faster than CO2 CO is 3.75 times faster than CO2 Both diffuse at the same rate 48 / 50 Formula of Chile saltpetre is__________________? NaNO3 Ba (NO3)2 NH4Cl CaCO3 49 / 50 Which of the following is incorrect statement about nitrogen importance ? it accelerates fruits and flowers growth It is involved in the chlorophyll synthesis It is involved in the synthesis of protein and nucleic acids It enhances plant growth 50 / 50 The volume strength of 1.5 N H2O2 solution is_______? 8.8 8.4 5.2 4.8 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 9 Chemistry Quiz 11Next
