12th Class Chemistry Past Paper MCQS 2019 Group 1 Test Lahore Board

aromatic-hydrocarbons-are-the-derivatives-of-3-a_-_benzene,boric-acid-cannot-be-used-3-a_-_in-soda-bottles,chile-saltpeter-has-the-chemical-formal-3-f_-_na-no-3-csub-3-e-2-3-c-2-fsub-3-e,elimination-bimolecular-reactions-involve-3-a_-_second-order-kinetics,hydrogen-bond-is-the-strongest-between-the-molecules-of-3-a_-_hf,laughing-gas-is-chemically-3-f_-_n-3-csub-3-e-2-3-c-2-fsub-3-eo,mark-the-correct-statement_-_na-3-csup-3-e-2-b-3-c-2-fsup-3-e-is-smaller-than-na-atom,the-fiber-which-is-made-from-acrylonitrile-as-monomer-3-f_-_acrylic-fiber,the-p-h-range-of-the-acid-rain-is-3-a_-_6-5-6,the-percentage-of-carbon-in-different-types-of-iron-products-is-in-the-order-of_-_cast-iron-3-d-steel-26-gt-3-b-wrought-iron,vinyl-acetylene-reach-with-h-cl-to-form_-_chloroprene,which-acid-is-used-in-the-manufacture-of-synthetic-fibre-3-f_-_acetic-acid,which-enzyme-is-not-involved-in-fermentation-of-starch_-_urease,which-of-the-following-has-highest-boiling-point-3-f_-_2-hexanone,which-of-these-polymers-is-an-addition-polymer-3-f_-_polystyrene,which-set-of-hybrid-orbital-has-planner-triangular-shape-3-f_-_sp-3-csup-3-e-2-3-c-2-fsup-3-e,which-woody-raw-material-is-used-for-the-manufacture-of-paper-pulp-3-f_-_poplar