12th Class Chemistry Past Paper MCQS 2015 Group 1 Test Lahore Board

acetone-reacts-with-hcn-to-form-cyanohydrin-it-is-an-example-of_-_nucleophilic-addition,chile-saltpeter-has-the-chemical-formal-3-f_-_na-no-3-csub-3-e-2-3-c-2-fsub-3-e,co-ordination-number-of-pt-in-5-b-pt-cl-28-no-3-csub-3-e-2-3-c-2-fsub-3-e-29-28-nh-3-csub-3-e-3-3-c-2-fsub-3-e-294-5-d-is_-_6,grignard-27-s-reagent-is-reactive-due-to-3-a_-_the-polarity-of-c-mg-bond,keeping-in-view-the-size-of-atoms-2-c-which-order-is-the-correct-one-3-f_-_ba-26-gt-3-b-mg,laughing-gas-is-chemically-3-f_-_n-3-csub-3-e-2-3-c-2-fsub-3-eo,newspaper-can-be-recycled-again-and-again-by-how-many-times-3-f_-_5,select-from-the-following-the-one-which-is-alcohol-3-a_-_ch-3-csub-3-e-3-3-c-2-fsub-3-e-ch-3-csub-3-e-2-3-c-2-fsub-3-e-oh,the-chief-ore-of-aluminum-is-3-a_-_al-3-csup-3-e-2-3-c-2-fsup-3-eo-3-csup-3-e-3-3-c-2-fsup-3-e-2-h-3-csup-3-e-2-3-c-2-fsup-3-eo,the-reaction-between-fat-and-na-oh-is_-_saponification,which-compound-is-the-most-reactive-one-3-a_-_ethene,which-enzyme-is-not-involved-in-fermentation-of-starch_-_urease,which-is-not-a-calcarious-material-3-f_-_clay,which-is-the-strongest-acid-3-f_-_h-cl-o-3-csub-3-e-4-3-c-2-fsub-3-e,which-of-the-following-reagents-will-react-with-both-aldehydes-and-ketones-3-f_-_grignard-27-s-reagent,which-one-of-the-following-gases-is-used-for-artificial-ripening-of-fruits-3-f_-_ethyne,which-reagent-is-used-to-reduce-a-carboxylic-group-to-an-alcohol-3-f_-_li-al-h-3-csub-3-e-4-3-c-2-fsub-3-e