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