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