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