Chemistry Test Chemistry Mega Quiz Test Online for Preparation Chemistry Mega Quiz Test Online for Preparation 1. Covalent compounds mostly exist in the form of:A. NeutronsB. MoleculesC. ProtonsD. Atoms Loading... 2. The force which holds together two or more atoms or ions to form a large variety of compounds is called:A. A coordinate bondB. A covalent bondC. A chemical bondD. An ionic bond Loading... 3. Which of the following is the simplest form of matter?A. All of aboveB. Gaseous state C. Liquid stateD. Solid state Loading... 4. DDT is a:A. HerbicideB. AllC. InsecticideD. Funicide Loading... 5. A pseudo uni-molecular reaction has order of reaction:A. 1B. 0C. 3D. 2 Loading... 6. The mass of one mole of iodine:A. 74 gB. 53 gC. 127 gD. 245 g Loading... 7. A limiting reactants is one:A. Does not effect the amount of productB. Which produces maximum number of moles of product.C. Which is present in least amountD. Which produces minimum number of moles of product. Loading... 8. An ion having negative charge is called:A. AnionB. ElectronC. PhotonD. Cation Loading... 9. A good reservoirs of energy to body is:A. ProteinsB. GlucoseC. CarbohydratesD. Lipids Loading... 10. Reaction of HNO₃with benzene gives:A. Maleic anhydrideB. Benzene sulphonic acidC. NitrobenzeneD. Benzophenone Loading... 11. Which property of oxygen resembles with sulphur?A. O- has no but S- has isotopesB. Ionic bond formationC. No poly atomic moleculesD. Typical non-metals Loading... 12. In an electrolytic cell, the electrons flow from:A. Anode to CathodeB. Random flowC. Cathode to anode or oppositeD. Cathode to anode Loading... 13. The sum of pH and pOH is:A. 14B. 10C. 7D. 18 Loading... 14. 4-d series is in the period:A. 6thB. 4thC. 5thD. 7th Loading... 15. Reaction of CO₂ with Grignard’s reagent gives:A. EthanalB. EthanoneC. EthanolD. Ethanoic acid Loading... 16. Catalyst changes:A. Enthalpy of productsB. Enthalpy of reactionsC. Enthalpy of reactantsD. Enthalpy of none Loading... 17. The dipole moment of water is:A. 1.08 DB. 1.94 DC. 1.84 DD. 8.0 D Loading... 18. Ketones react with sodium nitroprusside alkaline giving precipitate:A. Wine red or orange redB. Yellow or red pptC. White pptD. Silver ppt Loading... 19. A solution of glucose is 10%. The volume to which 1g mole of it dissolved will be:A. 1.8 dm³B. 1.7 dm³C. 6.1 dm³D. 8.1 dm³ Loading... 20. Fuel cells are the means by which chemical energy may be converted into:A. Sound energyB. Potential energyC. Electric energyD. Heat energy Loading... 21. Non-metals tend to gain electrons, becoming:A. MetalsB. All of aboveC. Negatively charged ionsD. Positively charged ions Loading... 22. In 1913, Mosley used the x-rays to determine:A. Atomic numberB. Avogadro's numberC. Mass numberD. Relative atomic mass Loading... 23. Which one is more toxic?A. FeB. CC. AgD. Hg Loading... 24. A substance having sigma and pi bond in it gives:A. ReductionB. NeutralizationC. AdditionD. Substitution Loading... 25. Dextose is also called:A. SucroseB. Glucose and FructoseC. FructoseD. Glucose Loading... 26. Every sample of matter with uniform properties and a fixed composition is called a:A. SolidB. GasC. PhaseD. Liquid Loading... 27. A salt 'X' is dissolved in water of pH 7, the resulting solution becomes alkaline in nature, salt 'X' is made up of:A. Strong acid and strong baseB. Weak acid and strong baseC. Weak acid and weak baseD. Strong acid and weak base Loading... 28. The SI unit of heat + energy is:A. JouleB. BTUC. None of the aboveD. Calorie Loading... 29. SN₂ reactions can be best carried out with:A. Sec. Alkyl halideB. Ter. Alkyl halideC. Pri. AlkylhalideD. All the three Loading... 30. All gases can be compressed by:A. Increasing pressureB. Keeping constant pressureC. Decreasing pressureD. None of the above Loading... 31. Carboxyl compounds have functional group:A. R-CH=OB. AllC. R-C-XD. RCOR Loading... 32. When rate of reaction is restarted by adding a substance, it is said to be:A. CatalystB. Negative catalyst C. Auto catalystD. Positive catalyst Loading... 33. Most of the universe consists of the matter in:A. Solid stateB. Liquid stateC. Gaseous stateD. Plasma state Loading... 34. Formula of cryolite is:A. Na₂B₄O₇.10H₂OB. Na₃AlF₆C. Ca₂B₆O₁₁.5H₂OD. Al₂O₃.2H₂O Loading... 35. Which will cook food more easily:A. Alcoholic waterB. Saline waterC. Pure waterD. Slight amount of HCl in water Loading... 36. Oxides of metals are:A. AmphotericB. Basic oxidesC. Acidic oxidesD. Super oxides Loading... 37. A chemical reaction A →B is said to be in equilibrium when:A. Conversion of A to B is 50% complete.B. Complete conversion of A to B has taken placeC. 50% reactant has been changed to B.D. Rate of transformation of A to B is equal to B to A. Loading... 38. Oxidation of NO in air produces:A. N₂O₅B. N₂OC. N₂O₄D. N₂O₃ Loading... 39. Entropy is a measure of ______ system.A. EfficiencyB. DisorderC. Internal energyD. Input Loading... 40. The difference of potential of two electrodes when concentration of solution is 1 M each at 25°C and 1 atm is called:A. Cell voltageB. Cell reactionC. Electrode potentialD. Standard cell potential Loading... 41. What do you call the apparatus generally used for measuring heat changes?A. VoltameterB. CalorimeterC. CoulometerD. Voltmeter Loading... 42. The reasons for less experimental yield than theoretical yield are reversible reaction, side reaction and:A. TemperatureB. MaximizationC. CrystallizationD. Pressure Loading... 43. Amino acids (proteins) are identified by the test:A. NinhydrinB. StarchC. LucasD. Iodine Loading... 44. Which one of the following has the same number of electrons as an alpha particle?A. HeB. Li⁺C. HD. H⁺ Loading... 45. Biopolymers are:A. LipidB. ProteinC. CarbohydratesD. All of these Loading... 46. Mendeleev was a scientist:A. EnglishB. GermanC. RussianD. French Loading... 47. Hydrides formed between elements with E.N difference greater than 1.8 is:A. CovalentB. IntermediateC. ComplexD. Ionic Loading... 48. The nature of positive rays depends on:A. Nature of resident gasB. All of the aboveC. Nature of elecrodeD. Nature of dischasrge Loading... 49. Higher alcohols are:A. Best solubleB. Least solubleC. Less solubleD. Normal in solubility Loading... 50. Halokanes are:A. AllB. TrihaloalkanesC. MonohaloalkanesD. Dihaloalkanes Loading... 51. Alpha rays consists of:A. Hydrogen nucleusB. ProtonsC. NeutronsD. Helium nucleus Loading... 52. Catalytic oxidation of benzene gives:A. Maleic anhydrideB. Benzene sulphonic acidC. NitrobenzeneD. Benzophenone Loading... 53. Silica contains oxygen by weight:A. 50%B. 53%C. 48%D. 89% Loading... 54. Vegetable oils are:A. Unsaturated fatty acids B. Essential oils obtained from plantsC. None of theseD. Glycerides of unsaturated fatty acids Loading... 55. Half life period of a first order reaction is independent of:A. Presence of catalystB. Initial concentration of the compoundC. All of the aboveD. Conditions of temperature Loading... 56. Type of isomerism in BrCH=CHBr is:A. Structural isomerismB. Geometrical isomerismC. Position isomerismD. Conformational isomerism Loading... 57. Inside every fluorescent lamp there is present a:A. SolidB. LiquidC. GasD. Plasma Loading... 58. Kinetic theory of gas was put forward by:A. MaxwellB. BernoulliC. CulombD. Newton Loading... 59. Which is an inert gas?A. HydrogenB. COC. OxygenD. Nitrogen Loading... 60. X-rays were discovered by:A. BohrB. RoentgenC. RutherfordD. Schrodinger Loading... 61. Metallic conduction is also called as:A. Electronic conductionB. Super conductionC. Protonic conductionD. Ionic conduction Loading... 62. Pb has inert pair of electrons:A. FourB. OneC. ThreeD. Two Loading... 63. Isomers have same properties:A. NuclearB. ChemicalC. Physical & ChemicalD. Physical Loading... 64. Mineral oil is called:A. PetroleumB. Diesel oilC. CoalD. Natural gas Loading... 65. Metals tends to lose electrons, becoming:A. All of aboveB. Positively charged ionsC. Negatively charged ionsD. Non metals Loading... 66. Plasma consists of:A. Mixture of all aboveB. Neutral particlesC. Negative electronsD. Positive ions Loading... 67. Organic molecules are completely burnt during incineration at temperature (C°)A. 800-850B. 650-700C. 950-1300D. 850-950 Loading... 68. Which enzyme is not involved in the fermentation of starch?A. UreaseB. ZymaseC. InvertaseD. Diastase Loading... 69. Alcohols are:A. Colourless liquidB. Burning in tasteC. Sweet in smellD. All of these Loading... 70. Buffer capacity is maximum when both components have:A. High and equal concentrationB. Low concentrationC. High concentrationD. Equal concentration Loading... 71. X-rays are attracted towards:A. None of electrodeB. Any ElectrodeC. AnodeD. Cathode Loading... 72. Evaporation of water is a:A. An endothermic changeB. An exothermic changeC. No heat change occursD. Chemical energy is produced Loading... 73. The rate of reaction:A. May decrease or increase as reaction proceedsB. Remains same as reaction proceedsC. Increases as reaction proceedsD. Decrease as reaction proceeds Loading... 74. X-rays have same nature as:A. Cathode raysB. Beta raysC. Alpha raysD. Gamma rays Loading... 75. The pH of 0.001M NaOH aqueous solution is:A. 9B. 8C. 13D. 11 Loading... 76. Fuel cells are mostly used in space aircrafts as the source of:A. Power onlyB. Drinking water and powerC. Fuel and drinking waterD. Drinking water only Loading... 77. Benzyl acetate has flavour of:A. JasmineB. BananaC. ApricolD. Raspberry Loading... 78. Salts of dichromic acids are:A. SilicatesB. SiliconesC. ChromatesD. Dichromates Loading... 79. Grape sugar or blood sugar is called to:A. GlucoseB. SucroseC. Glucose and FructoseD. Fructose Loading... 80. The benzene molecule contains:A. One double bondB. Delocalized π electron chargeC. Two double bondD. Three double bond Loading... 81. Acetic acid is manufactured by:A. EsterificationB. FermentationC. DistillationD. Ozonolysis Loading... 82. Esters are used as:A. FertilizersB. Artificial flowersC. PointsD. Dyes Loading... 83. The molecule has triple bond in it:A. C₃O₂B. CO and CO₂C. COD. CO₂ Loading... 84. In exothermic reactions, ΔH is:A. PositiveB. Moe than productsC. Given in surroundingsD. Negative Loading... 85. Thermochemistry is the study of relationship between heat, energy and:A. Energy of activationB. Chemical energyC. Ionization energyD. Kinetic energy Loading... 86. The e/m value for positive rays is maximum:A. OxygenB. HydrogenC. HeliumD. Nitrogen Loading... 87. The covalent radius of Cl atom is:A. 99.4 pmB. 38 pmC. 176.7 pmD. 76 pm Loading... 88. Which has least melting point among the given?A. CoB. ZnC. WD. V Loading... 89. Swedish chemist J. Berzelius determined:A. Atomic volumeB. Atomic densityC. Atomic numberD. Atomic mass Loading... 90. Newland said, every eight element repeats properties of element:A. 1stB. 3rdC. 2ndD. 4th Loading... 91. Bakelite is a:A. Minor moleculesB. MonomerC. Simple moleculesD. Macromolecules or adduct Loading... 92. Properties of metals are:A. Form basic oxidesB. Malleable and ductileC. All are trueD. Tarnish in air Loading... 93. Arenes are also called:A. AtomB. BenzeneC. AromaticD. Hydrocarbons Loading... 94. Cell potential depends upon:A. Concentration of ionsB. All of aboveC. Nature of electrolyteD. Temperature Loading... 95. Most stable hydrides is of:A. FluorineB. ThalliumC. LeadD. Bismuth Loading... 96. The sum of mole fractions of components of a solution is equal to:A. 100B. 1C. 10D. 0 Loading... 97. The dipole moment of orthochlorobenzene is:A. 2.5 DB. 2.70 DC. 1.5 DD. 1.70 D Loading... 98. Major component of natural gas is:A. EthaneB. MethaneC. EtheneD. Propane Loading... 99. Borax in water is:A. SolubleB. InsolubleC. ImmiscibleD. Sparingly soluble Loading... 100. Molarity of pure water is:A. 55.5B. 66.6C. 33.3D. 44.4 Loading... Loading... 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