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