181 Which of the following can be used as anti-knocking agent ? Chemistry Medium Full question → A PbCl2 B (C2H5)4 Pb C (C2H5)2 Pb D all of the above
182 The metallic sound produced by engine due to the pre-ignition of fuel is called _______________? Chemistry Medium Full question → A knocking B reforming C cracking D a and c
183 The precess in which larger molecule with higher molecular weight breaks down into smaller moleucles with lower molecular weight____________________? Chemistry Medium Full question → A polymerization B pyrolysis C isomerism D no such process occurs
184 Methane is used in power generation in chemical industries being a__________________? Chemistry Medium Full question → A natural gas B good caloric value C cheaper D All
185 Organic compounds are soluble in ____________________? Chemistry Medium Full question → A polar solvent B non-polar solvent C alkalies D water
186 Compounds having same molecular formula but differ in structural formula are called __________________? Chemistry Medium Full question → A polymer B monomer C isomer D allotropes
187 Chemical properties of first member of homologous series with respect to other members are_________________? Chemistry Medium Full question → A same B different C depends upon number of C atoms D depends upon number of H atoms
188 A double bond consists of __________________? Chemistry Medium Full question → A Two sigma bonds B Two Pi bonds C One sigma and one Pi bonds D One sigma and two Pi bonds
189 According to vital force theory_______________? Chemistry Medium Full question → A Oorganic compounds can be synthesized from inorganic compounds B organic compounds cannot be synthesized from inorganic compounds C organic compounds can be synthesized by animals D organic compounds can be synthesized by plants
190 Organic compounds that are essentially nonpolar and exhibit weak intermolecular forces have________________? Chemistry Medium Full question → A Low melting points B Low vapour pressure C High boiling points D High electrical conductivity
191 Geometric isomerism is usually found in___________________? Chemistry Medium Full question → A Alkanes B Alkenes C Alkynes D Esters
192 Octane number 2 2 4-trimethyl pentane is__________________? Chemistry Medium Full question → A 100 B 90 C 80 D 70
193 Hydro carbons which burn with smoky flame are called_________________? Chemistry Medium Full question → A Aliphatic B Alicyclic C Aromatic D Aldehyde
194 Main source of organic compounds is__________________? Chemistry Medium Full question → A Animal B Fossil C Coal D Plants
195 Industrial materials thermal power stations are coated with__________________? Chemistry Medium Full question → A Polyester resins B Epoxy paints C polyamide resins D Polyvinyl chloride
196 The common name of propane -1 3-dioic acid is____________________? Chemistry Medium Full question → A Oxalic acid B Succinic acid C Malonic acid D Fumaric acid
197 Which one does not exhibit aldol condensation___________________? Chemistry Medium Full question → A Ethanal B Acetone C Benzaldehyde D Butanone
198 The process of fermentation involves all the enzymes except__________________? Chemistry Medium Full question → A Diastase B Invertase C Zymase D Sucrase
199 Which one of the following is not a good leaving group ? Chemistry Medium Full question → A HSO4- B Cl- C OH- D Br-
200 When toluene reacts with chlorine in sunlight the first major product is__________________? Chemistry Medium Full question → A Benzy1 chloride B Benzal dichloride C O-chlorotoluene D O-chlorotoluene and P-chlorotoluene