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