Results HD Quiz powered by harmonic design #1. The blue color of Fehling’s solution is changed to red when warmed with an aldehyde due to formation of which of the following? AgO Cu2O SO2 NO2 #2. Identify the CORRECT option required for the maximum yield of ammonia by Haber’s process: Low pressure low temperature continual removal of ammonia High pressure high temperature continual removal of ammonia High pressure low temperature continual removal of ammonia High pressure low temperature continual removal of ammonia #3. The real gases show deviation from ideal behavior at: High temperature and Low pressure Low temperature and Low pressure Low temperature and High pressure High temperature and High pressure #4. In graphite the carbon atoms are arranged in which of the following structure? Tetragonal Hexagonal Trigonal Rhombic #5. In Friedel Craft acylation an acyl group is introduced in benzene ring in the presence of catalyst: H2SO4 AlCl3 Sunlight V2O5 #6. The type and relative amount of each isotope in an element can be found by: UV spectroscopy Mass spectroscopy NMR spectroscopy R spectroscopy #7. Alkyl halides involving -C-X bond breakage and -C-Nu bond formation simultaneously would follow which one of the following mechanisms SN2 E2 SN1 E1 #8. In endothermic reaction, the head content of the Products is more than that of reactants Reactants and products will not change Reactants and products is equal Reactants is more than that of products #9. Common name of 2-hydroxy propanoic acid is: Lactic acid Phthalic acid Formic acid Tartaric acid #10. Which of the following is NOT a feature of VSEPR theory? It determines the shape of molecule Only lone pair participates in determining geometry of molecules Pairs of electrons repel each other It helps in understanding interaction of medicinal drug #11. Which of the following is the correct electronic configuration for carbon? 1s22s22p2 1s22s22p3 1s22s22p4 1s22s22p1 #12. All of the following steps are used to calculate the lattice energy in Born-Haber cycle EXCEPT Ionizing the metal Ionize non-metal Deionize the metal Atomizing the metal #13. Identify the correct formula to calculate rate of reaction: Time taken for the change / Change in concentration of substance Change in concentration / Time taken for the change (Time taken for the change / Change in concentration of substance) x 100 Time taken for the change x Change in concentration of substance #14. If a reaction rate does not change with concentration then it is Zero order 2nd order 3rd order 1st order #15. Number of moles in an element is directly proportional to: Molar mass of an element Formula mass Empirical formula mass Mass of an element #16. Iso-Butene and 2-Butene are showing which type of isomerism? Chain Functional group Position Metamerism #17. Reaction of HCN with formaldehyde is a Electrophilic addition reaction Electrophilic substitution reaction Nucleophilic addition reaction Nucleophilic substitution reaction #18. When carboxylic acid is heated with alcohol in the presence of sulphuric acid, which one of the following is formed: Acid anhydride Esters Amides Acyl chloride #19. Which of the following is correct regarding phenol Phenol is less acidic than carboxylic acid Phenol is less acidic than water Phenol is less acidic than ethanol Phenol and water are equally acidic #20. Intermolecular forces between molecules of ideal gas are: Weal Absent Strong Moderate #21. The correct ideal gas equation is: PV = nRt gV = nRt yV = nRt qV = nRt #22. Electronic configuration of Chromium (Proton number 24) is: [Ar] 3d5 4s2 [Ar] 3d5 4s1 [Ar] 3d6 4s2 [Ar] 3d4 4s2 #23. Which of the following is NOT an alloy Brass Bronze Steel Graphite #24. Which of the following is NOT a correct feature of electrolytic cells? Oxidation occurs at anode Electrochemical reaction takes place Reduction occurs at cathode AC source is connected to electrodes #25. Which of the following DO NOT have tendency to form hydrogen bonding? Ethyl alcohol Ammonia Hydrocarbon Carboxylic acid #26. Which of the following is an example of substituent group which release electrons to benzene ring: -NH2 -NO2 -CN -NR3+ #27. One of the following is NOT an example of amorphous solids Plastic Glucose Glass Rubber #28. The individual atom in the sample of 1 mole of Neon has mass of 20.18 amu because it is Average atomic mass of Ne It is a fractional mass It is molar mass of Ne Overall mass of an isobar #29. The p-orbital has lobes? 2 5 4 3 #30. Whenever the crystalline solids are broken they do so along definite planes knows as: Coronal planes Cleavage planes Sagittal planes Refractory planes #31. The principle, that states that if a stress is applied to a system at equilibrium the system nullify the effect of stress as far as possible is: Le-Chateliers Charles' Haber's Boyle's #32. Which of the following has a co-ordinate bond? CaO H2O NaCl NH3BF3 #33. The difference of lithium from the other alkali metals is mainly because of Small radius and high charge density Small radius and low charge density Large radius and high charge density Large radius and low charge density #34. Oxidation number of ‘Mn’ in KMnO4 is +7 -7 +1 0 #35. Which one of the following is not an amino acid Lysine Glutamic acid Folic acid Glycine #36. Which one of the following is NOT basic in nature Potassium oxide Magnesium oxide Sodium oxide Aluminum oxide #37. Which of the following is CORRECT Arrhenius equation? K = Ae -Ea/ST K = Ae -Ea/UT K = Ae -Ea/QT K = Ae -Ea/RT #38. Which of the following has smallest atomic radius P S Na Mg #39. Boiling point of a liquid is a temperature at which: Viscosity is less than the atmospheric pressure Vapor pressure equals the atmospheric pressure Viscosity equals the atmospheric pressure Surface tension is greater than the atmospheric pressure #40. Identify the correct statement related to substitution and elimination of alkyl halides: Role of leaving groups in elimination is similar to substitution Decrease in temperature will favor elimination more than substitution Strong bases causes substitution in prefrence to elimination Substitution is favored more than elimination by decreasing solvent polarity #41. Which of the following alcohol can give Iodoform reaction? 1-Propanol 1-Butanol Ethanol Methanol #42. CnH2nO is the general formula of Ether Carboxylic acid Ketones Carbolic acid #43. The enthalpy change when 1 mole of water is formed by the reaction of acid with an alkali under standard condition is known as: Enthalpy of combustion Enthalpy of formation Enthalpy of neutralization Enthalpy of reaction #44. Homocyclic organic compounds are sub-divided into two types namely: Alicyclic and Aromatic Saturated and Unsaturated Alkenes and Alkynes Aromatic and Non aromatic #45. Which step is irrelevant with respect to balancing of redox equations by oxidation Equalize the number of electrons lost and gained Identify the element undergoing a change in oxidation number Assign oxidation number to all the atoms involved in the equation Split the reaction into two half reactions #46. Identify the correct ascending order of reactivity of alkyl halides Br, I, F, Cl I, F, Cl, Br Cl, Br, I, F F, Cl, Br, I #47. In order to boil water at 110oC the external pressure should be: 200-760 torr 760-1200 torr 665-700 torr 660-700 torr #48. Which of the following is NOT a property of transition elements? Hard metals Ions and compounds are colorless High melting points Good conductors of electricity #49. The solubility of sulphates of alkaline metals generally Increase down the group Decrease down the group Increase then decrease down the group Doesn't change down the group Previous Finish