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