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