[{"id":112051,"question":"In CH<sub>4</sub>, all the H-C-H bond angles are","choices":[{"text":"120°","value":"A"},{"text":"107°","value":"B"},{"text":"109°","value":"C"},{"text":"109.5°","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112049,"question":"Alkenes normally have ______ geometry","choices":[{"text":"Tetrachedral","value":"A"},{"text":"Linear","value":"B"},{"text":"Planer","value":"C"},{"text":"None","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112048,"question":"The general formula of alkane is","choices":[{"text":"C<sub>n</sub>H<sub>2n+2</sub>","value":"A"},{"text":"C<sub>n</sub>H<sub>n</sub>","value":"B"},{"text":"C<sub>n</sub>H<sub>2n</sub>","value":"C"},{"text":"C<sub>2</sub>H<sub>2n-1</sub>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":112046,"question":"Hydrogenation of alkenes/alkynes inthe presence of Ni as catalyst at 3000°C result in the formation of corresponding alkanes. This reaction is known as","choices":[{"text":"Sabatier-senderens reaction","value":"A"},{"text":"kolbes reaction","value":"B"},{"text":"Cannizaro's reaction","value":"C"},{"text":"Haloform reaction","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":112040,"question":"Sp<sup>3</sup>hybird orbitals are oriented at an angle of","choices":[{"text":"107.5°","value":"A"},{"text":"108.5°","value":"B"},{"text":"109.5°","value":"C"},{"text":"103.5°","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112039,"question":"When acetylene is passed through a copper tube at 300°C, it polymerizes to","choices":[{"text":"Polyacetylene","value":"A"},{"text":"polyethylene","value":"B"},{"text":"Benzene","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112038,"question":"Nitroalkane are used in","choices":[{"text":"Fuel","value":"A"},{"text":"Solvents","value":"B"},{"text":"Organic synthesis","value":"C"},{"text":"All of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112037,"question":"The process in which orbitals of different energies and shapes mix with each other to give equivalent hybrid orbitals is called","choices":[{"text":"Isomerization","value":"A"},{"text":"polymerization","value":"B"},{"text":"Hybridization","value":"C"},{"text":"Resonance","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112036,"question":"Replacement of hydrogen by NO<sub>2</sub>group is called","choices":[{"text":"Sulphonatioin","value":"A"},{"text":"Hydration","value":"B"},{"text":"Nitration","value":"C"},{"text":"Cracking","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112035,"question":"Paraffins are also called","choices":[{"text":"Alkanes","value":"A"},{"text":"Alkynes","value":"B"},{"text":"Alkenes","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":112034,"question":"To differentiate isomers we use","choices":[{"text":"n-","value":"A"},{"text":"iso-","value":"B"},{"text":"neo","value":"C"},{"text":"All of them","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112033,"question":"Hydrocarbons are organic compounds which contain elements such as","choices":[{"text":"Hydrogen","value":"A"},{"text":"Carbon","value":"B"},{"text":"Hydrogen and carbon","value":"C"},{"text":"Halogens","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112032,"question":"Which is the used as test for the presence of alkenes","choices":[{"text":"Reaction of cold dilute alkaline KMnO<sub>4</sub>","value":"A"},{"text":"Combustion","value":"B"},{"text":"Polymerization","value":"C"},{"text":"Catalytic hydrogenation","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":112031,"question":"The temp. used for the hydrogenation of alkenes using Ni is","choices":[{"text":"2000°C","value":"A"},{"text":"400°C","value":"B"},{"text":"200-- 300°C","value":"C"},{"text":"1000°C","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112030,"question":"What is not a common use of methane","choices":[{"text":"As a fuel","value":"A"},{"text":"For the preparation of haloaklanes","value":"B"},{"text":"For the preparation of methyl alcohol","value":"C"},{"text":"For the preparation of sulphuric acid","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112029,"question":"Alkanes are generally not reactive towards acids, alkalis, oxidation or reuducing agents. They however undergo some reactions, which one is the reaction undergone by alkanes","choices":[{"text":"Elemination","value":"A"},{"text":"Addition","value":"B"},{"text":"Free radical substitution","value":"C"},{"text":"Nucleophilic substation","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112028,"question":"The Total coal resources of Pakistan are estimated to be","choices":[{"text":"184 billion","value":"A"},{"text":"184 million tones","value":"B"},{"text":"1.84 billion tounes","value":"C"},{"text":"1.84 million tonnes","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":112027,"question":"The hydrocarbons having double bonds normally end with suffix","choices":[{"text":"Ane","value":"A"},{"text":"Ene","value":"B"},{"text":"Yne","value":"C"},{"text":"Oic","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":112026,"question":"","questionImage":"112026_636320134009239427-RQ.JPG","choices":[{"text":"Pent -1-ene-3-yne","value":"A"},{"text":"2-pentyne-4-ene","value":"B"},{"text":"1-pentene-3-yne","value":"C"},{"text":"Pent-2-yen-4-ene","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":112025,"question":"The saturated hydrocarbons usually end with suffix ______","choices":[{"text":"Ane","value":"A"},{"text":"Ene","value":"B"},{"text":"Yne","value":"C"},{"text":"Oic","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":112024,"question":"","questionImage":"112024_636320132490083884-RQ.JPG","choices":[{"text":"2, 3-dimethylbutane","value":"A"},{"text":"2, 3-methylbutane","value":"B"},{"text":"2-dimethylbutane","value":"C"},{"text":"Dimethylbutane","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":112023,"question":"Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon","choices":[{"text":"","img":"112023_636320130350831081-RA1.JPG","value":"A"},{"text":"","img":"112023_636320130350831081-RA2.JPG","value":"B"},{"text":"","img":"112023_636320130350831081-RA3.JPG","value":"C"},{"text":"","img":"112023_636320130350831081-RA4.JPG","value":"D"},{"value":"E"}],"correctAnswer":3}]