Chemistry Test 2 Please don't use any search browser to find the answer. Just do it yourself so you can measure your knowledge power. Best of Luck! Please! Enter Password 1 / 50 How many Faradays of electricity are required to remove one mole of AlCl3? 8 7 5 3 2 / 50 Which of the following is a mixture of low-boiling hydrocarbons? Propanoic acid Glycerol Gasoline Ethanol 3 / 50 In H2O, ........ hybridization is present. Sp Sp3 Sp2 Sp4 4 / 50 Ozone is located in Mesosphere Troposphere Stratosphere Thermosphere 5 / 50 The whole universe is made up of almost Hydrogen? 80% 70% 80% 20% 6 / 50 Chile saltpeter had the chemical formula KNO3 Na 2 B4 O7 NaNO 3 Na2 CO3 H 2 O 7 / 50 Which of the following sulphates is not soluble in water? Barium sulphate Potassium sulphate Zinc sulphate Sodium sulphate 8 / 50 Elements with seven electrons in their valence shell are known as Lanthanides Inert Halogens Alkali metals 9 / 50 As the atomic number of the halogen increases, the halogens Becomes lighter in color Become less dense Lose their outermost electrons less easily Gain electrons less easily 10 / 50 MASS of sulpher is....... 72g 23g 92g 32g 11 / 50 UV radiation from the sun causes a reaction that produces CO O3 Flourides SO2 12 / 50 The components of lithosphere are All of these Mineral of earth crust Soil Organic matter of earth crust 13 / 50 Find the temperature at which the rate of effusion of N₂ is 1.625 times to that of SO₂ at 500°C 720°C 620°C 690°C 520°C 14 / 50 The total number of bonds in CaC2 is: two sigma bond and one pi bonds One sigma bond and one pi bonds two sigma bond and two pi bonds One sigma bond and two pi bonds 15 / 50 The hydrides which are non stoichiometric in nature are Interstitial Complex Ionic Covalent 16 / 50 The pH range of acid rain is 5 – 7 Less than 5 6 – 8 6.5 – 7 17 / 50 In the periodic table each period begins with a metal, which is Most electropositive Most electronegative Less electronegative Less electropositive 18 / 50 The hydrogen, which is present in the atmosphere of sun and stars in a large amount, is H - H3 H H 2 19 / 50 The mass of one mole of electron is 0.184 mg 0.54 mg 0.054 mg 1.008 mg 20 / 50 Which of the following elements react with steam to produce H2 gas? Sn Ni Pd All of the above 21 / 50 Lead is Soil pollutant Radioactive pollutant Air pollutant Noise pollutan 22 / 50 ______ classified the then known elements into metals, non metals and their derivatives Newlands Mendeleeve Dobreiner Al – Razi 23 / 50 Unit of dipole moment is.? m-7 m-4 m-3 m-2 24 / 50 Which one of the following is an incorrect statement? The electron affinity of fluorine is greater than that of chlorine The electronegativity of fluorine is greater than that of chlorine. The ionization potential of nitrogen is greater than that of chlorine he ionization potential of beryllium is greater than that of boron 25 / 50  Which one of the following makes the bulk of hydrosphere’s content? Fresh water lakes and ponds All have equal distribution Glaciers & ice Oceans 26 / 50 The chemical formula of camphor is CHO C10H16O C8H6O C3H4O 27 / 50 The most reactive allotropic form of phosphorus is Pink White Yellow Green 28 / 50 Which organic compound does not undergo the Cannizzaro reaction? Aldehydes α-Hydroxy aldehydes Aromatic compounds Ketones 29 / 50 What value is the pH of a 10^-10 M NaOH solution closely related to? 3 5 5 7 30 / 50 Disease caused by eating fish in water contaminated with industrial waste having mercury Hashmitos disease Brights dieses Arthritis Minamat disease 31 / 50 The process in solid waste is burnt at high temperature ranging from 900 to 1000 o C Incineration All of these Ozonation Chlorination 32 / 50 Cesium and Francium are liquids above 15 o C 10 o C 20 o C 30 o C 33 / 50 The ionic halides in order of decreasing m.p and b.p can be arranges as Iodide>bromide>chloride> fluoride Fluoride>chloride>bromide>iodide Chloride>bromide>iodide>fluoride Bromide>chloride>fluoride>iodide 34 / 50 The element that has a giant covalent structure is silicon (Si) All Silicon dioxide (silica) Graphite 35 / 50 __________is study about energy of a chemical system None thermochemistry Biochemistry Organichemistry 36 / 50 1 mole of hydrogen contains ....... 7g of hydrogen 4g of hydrogen 2g of hydrogen 1g of hydrogen 37 / 50 The mass of 0.5 mole of Aluminum iS 13 g 13.5 g 14 g 27 g 38 / 50 Valency of carbon is: 8 2 6 4 39 / 50 Find the temperature at which the rate of effusion of N₂ is 1.625 times to that of SO₂ at 500°C 520°C 690°C 620°C 820°C 40 / 50 The alkali metals, which have radioactive isotopes Na Li K and Rb K 41 / 50 Mass of sodium in 53 g of Na2CO3 is 46 g 23 g 106 g 92 g 42 / 50 Under what category can a floor cleaning agent that serves to make floors bacteria-free be placed: All Bleach Alcohol Disinfectant 43 / 50 Fish die in water bodies polluted by sewage due to Reduction in oxygen Foul smell Clogging of gills by silt Pathogens 44 / 50 Ionization energy is lowest for Alkali metals Halogens Alkaline earth metals Inert gases 45 / 50 Which of the following factors help to measure quality of water? DO All of the above BOD COD 46 / 50 Environmental pollution affects Man only Biotic and abiotic components of environment Plants only Biotic components 47 / 50 Seventh period consists of……………….normal elements? 2 8 4 3 48 / 50 The yellow color in photochemical smog is due to presence of _______ Nitrogen dioxide Chlorine gas Carbon dioxide None 49 / 50 which molecule or structure does not contain three atoms bonded at an angle between 109° and 110°? Methane (CH4) Graphite. All Ethylene (C2H4) 50 / 50 The pollutant which play an important role in smog formation H2 S NH 3 CO All of these Your score is 0% Restart quiz
