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