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