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