1121 Presence of nitrogen in organic compounds is tested as__________? Chemistry Medium Full question → A Nitrogen gas B NH3 C CN‾ D NO
1123 The stationary and mobile phases in paper chromatography are____________? Chemistry Medium Full question → A Liquid/liquid B Solid/liquid C Liquid/solid D Liquid/gas
1124 The bond length of C=C is___________? Chemistry Medium Full question → A 1.20A° B 1.34A° C 1.54A° D 1.68A°
1125 The bond angle between hybrid orbitals in methane CH3 is___________? Chemistry Medium Full question → A 115.5° B 109.5° C 105. 7° D 180°
1126 The criteria for aromaticity is presence of_________? Chemistry Medium Full question → A Unsaturations B Cyclic structure C Presence of 4nπ electrons D Presence of 4n+2π electrons
1127 Chlorine Cl when attached to benzene has________? Chemistry Medium Full question → A +I and +R effect B -1 and +R effect C +1 and -R effect D -I and -R effect
1128 Which one of the following is most acidic? Chemistry Medium Full question → A Phenol B P-nitrophenol C O-nitrophenol D M-nitrophenol
1129 Which of the following effects best explains that o-nitrophenol is insoluble in water? Chemistry Medium Full question → A Inductive effect B Resonance effect C Intermolecular H-bonding D Isomeric effect
1130 The carbon-carbon bond strength is maximum in__________? Chemistry Medium Full question → A CH3CH3 B CH2=CH2 C Benzene D Cyclohexane
1131 Which one of the following is caustic potash? Chemistry Medium Full question → A NaOH B KOH C NaCl D NaBH4
1132 Which of the following shows electrical conduction_____? Chemistry Medium Full question → A Potassium B Graphite C Diamond D Sodium
1133 The type of hybridisation of boron in diborane is______? Chemistry Medium Full question → A Sp- hybridisation B Sp2- hybridisation C Sp3- hybridisation D Sp3d2- hybridisation
1134 Which of the following element has the maximum electron affinity_____? Chemistry Medium Full question → A Cl B Br C I D F
1135 The structure of H2O2 is_______? Chemistry Medium Full question → A Planar B Non- polar C Spherical D Linear
1136 The volume strength of 1.5 N H2O2 solution is_______? Chemistry Medium Full question → A 4.8 B 5.2 C 8.8 D 8.4
1137 A 10 volume solution of H2O2 means_______? Chemistry Medium Full question → A 10 grams of H2O2 solution liberate 10 mL of O2 at STO B 10 gram equivalents of H2O2 liberates 10 mL of O2 at STP C 10 litres of H2O2 liberates 19 mL of O2 at STP D 1mL of solution of H2O2 liberates 10 mL of O2 at STP
1138 Electronic Configuration of Calcium (Ca) atom may be written as________? Chemistry Medium Full question → A Ne, 4p2 B Ar, 4s2 C Ne, 4s2 D Kr,4p2
1139 Ce58 is a member of__________? Chemistry Medium Full question → A S-block B P-block C d-block D f-block