Chemistry Tests Welcome to Shaheen Leader Academy We expect 100% result. Click on Start Button. Your time is Ended. Thanks Chemistry (Matric) Quiz 1 / 25 Melting point of calcium is: 97˚C 650˚C 100˚C 851˚C 2 / 25 Atoms react each other because : They want to disperse They are short of electrons They are attract to each other They want to attain stability 3 / 25 In direction of reaction, reaction is at equilibrium then Both a and b Qc=Kc Qc>Kc Qc<Kc 4 / 25 Second period contains number of elements. 2 8 7 18 5 / 25 The colour of Br is: Reddish Brown Pale Yellow Purple Black Greenish Yellow 6 / 25 How many electrons can K-shell accommodate? 2 3 5 4 7 / 25 Molarity is the number of mole of solute dissolve in 100g of solvent 1dm3of solvent Idm3 of solution 1kg of solution 9 / 25 All hydrogens (X2), Combine with hydrogen to give: Hydrogen Bromides Hydrogen Flouride Hydrogen Halides Hydrogen Chlorides 10 / 25 If NH₄Cl reacts with H₂O then it forms? NH₄OH NH₄H NH₄Cl NH₄Na 11 / 25 Density of gas increase when its : Volume is kept constant Temperature is increase Pressure is increase None of these 12 / 25 The electronegativity of carbon is: 2.6 1.0 2.0 4.0 13 / 25 The strongest oxidizing element is: Br I F Cl 14 / 25 Nitrogen is used to prepare : Carbon dioxide Non of these Hydrogen Ammonia 15 / 25 Malic acid is found from Sour milt Grapes fates Apples 16 / 25 When H₂ and O₂ combine they form None Water H and O HO₂ 17 / 25 All of the following are tri-atomic molecules except: O₃ H₂O CO₂ CO 18 / 25 Low pH value means Strong basic Strong acid Weak acid All of them 19 / 25 Isotopes of an element have different: Atomic Numbers Number of Electrons Electron and Neutron Number of Neutrons 20 / 25 Sodium- potassium alloy is used in nuclear reactor as a: catalyst Absorber Reactant Coolant 21 / 25 When Na react with HCl the salt produce is NaOH WATER Ammonia NaCl 22 / 25 Industrial chemistry deals with the manufacturing of components: On commercial scale In Laboratory On micro scale On economic scale 23 / 25 A cation is derived from Base Acid Compound Molecule 24 / 25 The word acid is the derived from Acetate Acidic Acids Acetic 25 / 25 Mono saccharide cannot be DE hydrolyzed Hydrolyzed Condense Evaporated Your score is Restart quiz Subscribe our Channel Here Apply Here for Online Registration Contact For any inquiy please Call +92-3332225389 Facebook-f Twitter Google-plus-g Instagram Dribbble Youtube