Faisalabad Board Chemistry 12TH MCQs Past Paper 2021 QUIZ Leave a Comment / Education / By Majid Ali Faisalabad Board Chemistry 12TH MCQs Past Paper 2021 QUIZ 1 / 17 During the manufacturing process of cement, the temperature of the decomposition zone goes up to: a) 600°C b) 900°C c) 1000°C d) 1200°C 2 / 17 Carboxylic acids on reduction with HI and red phosphorus give: a) Alkanes b) Alcohols c) Aldehydes d) Alkenes 3 / 17 Which acid is used in the manufacture of synthetic fiber? a) Formic acid b) Oxalic acid c) Carbonic acid d) Acetic acid 4 / 17 The compound used in the processing of anti-polio vaccine is: a) Acetaldehyde b) Formaldehyde c) Acetone b) Formaldehyde 5 / 17 Formalin is a solution of Formaldehyde in water: a) 10% b) 20% c) 50% c) 40% 6 / 17 Which compound will have maximum repulsion with H₂O? a) C₂H₆ b) C₂H₅OH c) CH₃CH₂CH₂OH d) CH₃-O-CH₃ 7 / 17 Which is not a nucleophile? a) H₂O b) BF₃ c) NH₃ d) all are correct 8 / 17 The electrophile in aromatic sulphonation is: a) H₂SO₄ b) HSO₃ c) SO₃ d) hydrogen sulphide 9 / 17 The formula of chloroform is: a) CH₃Cl b) CCl₄ c) CH4 d) CHCl₃ 10 / 17 A double bond consists of: a) Two sigma bonds b) One sigma and one pi bond c) One sigma and two pi bonds d) Two pi bonds 11 / 17 The color of transition metal complexes is due to: a) d-d transition of electrons b) Paramagnetic nature of transition elements c) Ionization d) Loss of s-electrons 12 / 17 The anhydride of HClO₄ is: a) Cl₂O₇ b) Cl₂O₅ c) ClO₂ d) ClO₃ 13 / 17 Mark the correct statement: a) Metallic character increases down the group b) Metallic character increases from left to right along a period c) Metallic character remains the same from left to right along a period d) Metallic character remains the same down the group 14 / 17 Chile Saltpeter has the chemical formula: a) NaNO₃ b) KNO₃ c) Na₂B₄O₇ d) Na₂CO₃·H₂O 15 / 17 Tincal is a mineral of: a) Al b) B c) Si d) C 16 / 17 Among group VA elements, the most electronegative element is: a) Sb b) N c) P d) As 17 / 17 Which halogen is a solid at room temperature and pressure? a) F₂ b) Cl₂ c) Br₂ d) I₂ Your score isThe average score is 50% 0% Restart quiz Related posts: Dipole-Dipole Forces Quiz Hydrogen Bonding Quiz Chemistry 10TH MCQs Past Paper Sargodha Board 2022 QUIZ FAISALABAD 2022 BOARD 10th Paper Chemistry ​
