0% 0 Chemistry Quiz 24 1 / 50 Rate of reactions of most organic compounds are____________________? no regular character present slow very fast very slow 2 / 50 In the complex [Cr(OH)3(H2O)3] the coordination number is __________________? 4 6 2 3 3 / 50 Which one of the following looks odd__________________? K2CrO4 H2S H2SO4 KMnO4 4 / 50 In crystallization if the solvent is inflammable then direct heating is________________? needed depends on temperature avoided crystallization does not involve heating 5 / 50 Phosphoric acid is a weak acid and its basicity is____________________? 1 2 zero 3 6 / 50 A single chlorine free radical can destroy how many ozone molecules ? 100000 10000 100 10 7 / 50 Which one of the following alkali metals forms only normal oxide when it reacts with O2 ? Rubidium Potassium Lithium Sodium 8 / 50 In 1 ? pentene -4- yne the carbon exhibit hybridization_________________? sp2 ? sp sp3 ? sp2 sp2 ? sp sp3 ? sp2 ? sp 9 / 50 The percentage of nitrogen in urea is________________? 56% 46% 66% 36% 10 / 50 The kinetic molecular theory of gases was put forward in 1738 by _____________________? Maxell Boltzman Bernoulli Clausius 11 / 50 The ttractive forces between the partial positive end of one molecule and partial negative end of other molecule are called________________? Ion dipole-dipole forces London dispersion forces Debye forces Dipole-dipole forces 12 / 50 In which compound of Xenon the oxidation state of Xenon is + 6? XeOF4 XeF4 Na4XeO6 XeOF2 13 / 50 Quantum number values for 3p orbitals are____________________? n=3 l=2 n=3 l=1 n=3 l=0 n=3 l=3 14 / 50 Which of the following will decompose to produce litharge_________________? Pb3O4 All of the above PbO2 Pb2O 15 / 50 The halogen which reacts spontaneously with gold (Au) to form Au+3 is ________________? Br2 I2 F2 Cl2 16 / 50 Which one has maximum number of unpaired electrons ? 6X 7Y 13W 9Z 17 / 50 A great variety of the organic compounds is due to its property of carbon_________________? Can form multiple bonds Exhibit catenation Show tetravalency Show isomerism 18 / 50 Conjugated base of a weak acid is_________________? strong unstable moderately weak weak 19 / 50 Calcarious material includes_________________? chalk marble all of the above lime stone 20 / 50 Compounds attracted by applied strong magnetic field are called__________________? ferromagnetic good conductor paramagnetic diamagnetic 21 / 50 The ionization energy__________________? Generally increases from left to right in a period Does not change in a group Does not change in a period Increase from top to bottom in a group 22 / 50 The molecules of which gas have highest speed? H2?at -73oC N2?at 1,027oC CH4?at 300 K O2?at 0oC 23 / 50 Which of the following molecule is polar__________________? CCI4 CO2 none of the above BF3 24 / 50 An alcohol which can be prepared by fermentation is_________________? CH3 ? CH2 ? OH C6H5OH CH3OH C3H7OH 25 / 50 The metallurgical process in which a metal is obtained in a fused state is called__________? froth floatation roasting calcinations smelting 26 / 50 Absolute alcohol is obtained when rectified spirit is treated with__________________? Ca(OH)2 CaCl2 CaCO3 CaO 27 / 50 The octet rule does not always hold for which of the following elements _________________? C P F O 28 / 50 For which of the following compounds the term empirical formula cannot be applied ? CCI4 H2O NaCl It can be applied to all mentioned above 29 / 50 Seventh period contains _________________ normal elements ? 8 2 6 4 30 / 50 In which of the following equilibria will Kc and Kp have the same value ? N2 + 3H2 = 2NH N2 + O2 = 2NO 2CO + O2 = CO2 PCI5 = PCI3 + Cl2 31 / 50 Which of the following is an amide________________? R-NH2 C6H5NH2 R ? NH ? R RCONH2 32 / 50 the fractional distillation of petroleum produces gasoline up to ________________? 20% 10% 15% 30% 33 / 50 When the reaction completes in more than one steps rate of reaction will be determined by________________? All steps Slowest step Molecularity of the reaction Fast step 34 / 50 Solution with maximum concentration of solute at given temperature is called________________? saturated solution Super saturated solution dilute solution unsaturated solution 35 / 50 Which element was not known when Mendeleev proposed his classification ? Hydrogen Germanium Copper Sodium 36 / 50 Ionization energy in a period generally ___________________? Decreases Variable trend No change Increases 37 / 50 The geometry of ammonia is___________________? Tetrahedral Square planner Trigonal bipyramidal Trigonal Pyramidal 38 / 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? 75% Fe 77% Fe 74% Fe 78% Fe 39 / 50 Which allotropic form of phosphorous is the most stable ? red black White Violet 40 / 50 Photographic plates are coated with a thin film of _________________? AgI AgCl AgNO3 AgBr 41 / 50 The structure of ethyne is_________________? linear trigonal planar angular trigonal 42 / 50 Second ionization potential of alkali metals are very high due to_______________? inert gas configurations ns1 electronic configuration being metals being s-block elements 43 / 50 A double bond consists of __________________? Two Pi bonds One sigma and two Pi bonds One sigma and one Pi bonds Two sigma bonds 44 / 50 A substance which increases the reactivity of enzyme is called_________________? Stimulators Non-activators Inhibitors Promoters 45 / 50 In the formation of Zwitter ions proton goes from____________________? Amino to carboxyl group Carboxyl group only Carboxyl to amino group Amino group only 46 / 50 The number of molecules taking part in the rate determining step is called___________________? Order of reaction Mole of a reaction Rate of reaction Extent of a reaction 47 / 50 Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way ? The nature of its oxides The formula of its oxide Its number of isotopes The charge on its ions 48 / 50 The irritation caused by red ants bite is due to____________________? Lactic acid Formic acid Acetic acid Uric acid 49 / 50 Geometric isomerism is usually found in___________________? Alkynes Esters Alkenes Alkanes 50 / 50 In sp3 hybridization the expected geometry of molecules will be__________________? linear square planar trigonal pyramidal tetrahedral 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 23 Chemistry Quiz 25Next
