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 pollutant which play an important role in smog formation All of these CO NH 3 H2 S 2 / 50 ______ classified the then known elements into metals, non metals and their derivatives Al – Razi Dobreiner Newlands Mendeleeve 3 / 50 Which one of the following is an incorrect statement? The electronegativity of fluorine is greater than that of chlorine. The ionization potential of nitrogen 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 4 / 50 Ionization energy is lowest for Alkali metals Alkaline earth metals Inert gases Halogens 5 / 50 The total number of bonds in CaC2 is: two sigma bond and two pi bonds two sigma bond and one pi bonds One sigma bond and two pi bonds One sigma bond and one pi bonds 6 / 50 UV radiation from the sun causes a reaction that produces SO2 CO O3 Flourides 7 / 50 The hydrogen, which is present in the atmosphere of sun and stars in a large amount, is H H 2 H3 H - 8 / 50 Elements with seven electrons in their valence shell are known as Alkali metals Halogens Lanthanides Inert 9 / 50 Unit of dipole moment is.? m-3 m-7 m-4 m-2 10 / 50 The hydrides which are non stoichiometric in nature are Complex Interstitial Covalent Ionic 11 / 50 Fish die in water bodies polluted by sewage due to Foul smell Clogging of gills by silt Reduction in oxygen Pathogens 12 / 50 Lead is Radioactive pollutant Noise pollutan Soil pollutant Air pollutant 13 / 50 __________is study about energy of a chemical system Biochemistry Organichemistry thermochemistry None 14 / 50 In H2O, ........ hybridization is present. Sp Sp2 Sp3 Sp4 15 / 50 The yellow color in photochemical smog is due to presence of _______ None Chlorine gas Nitrogen dioxide Carbon dioxide 16 / 50 The most reactive allotropic form of phosphorus is White Green Pink Yellow 17 / 50 Ozone is located in Troposphere Thermosphere Mesosphere Stratosphere 18 / 50 The chemical formula of camphor is CHO C8H6O C3H4O C10H16O 19 / 50 Which of the following elements react with steam to produce H2 gas? Ni Sn All of the above Pd 20 / 50 Chile saltpeter had the chemical formula Na2 CO3 H 2 O Na 2 B4 O7 NaNO 3 KNO3 21 / 50 Which one of the following makes the bulk of hydrosphere’s content? All have equal distribution Fresh water lakes and ponds Oceans Glaciers & ice 22 / 50 The whole universe is made up of almost Hydrogen? 80% 70% 20% 80% 23 / 50 Disease caused by eating fish in water contaminated with industrial waste having mercury Arthritis Hashmitos disease Brights dieses Minamat disease 24 / 50 1 mole of hydrogen contains ....... 7g of hydrogen 1g of hydrogen 4g of hydrogen 2g of hydrogen 25 / 50 The ionic halides in order of decreasing m.p and b.p can be arranges as Bromide>chloride>fluoride>iodide Chloride>bromide>iodide>fluoride Iodide>bromide>chloride> fluoride Fluoride>chloride>bromide>iodide 26 / 50 The mass of 0.5 mole of Aluminum iS 27 g 13.5 g 13 g 14 g 27 / 50 Environmental pollution affects Biotic and abiotic components of environment Plants only Biotic components Man only 28 / 50 Cesium and Francium are liquids above 10 o C 30 o C 15 o C 20 o C 29 / 50 The mass of one mole of electron is 1.008 mg 0.184 mg 0.54 mg 0.054 mg 30 / 50 What value is the pH of a 10^-10 M NaOH solution closely related to? 3 7 5 5 31 / 50 The pH range of acid rain is 6.5 – 7 Less than 5 6 – 8 5 – 7 32 / 50 Under what category can a floor cleaning agent that serves to make floors bacteria-free be placed: All Alcohol Bleach Disinfectant 33 / 50 Which of the following is a mixture of low-boiling hydrocarbons? Glycerol Propanoic acid Gasoline Ethanol 34 / 50 Which organic compound does not undergo the Cannizzaro reaction? Ketones α-Hydroxy aldehydes Aromatic compounds Aldehydes 35 / 50 How many Faradays of electricity are required to remove one mole of AlCl3? 3 5 8 7 36 / 50 Which of the following factors help to measure quality of water? COD BOD All of the above DO 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 520°C 620°C 720°C 38 / 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 520°C 690°C 820°C 39 / 50 The process in solid waste is burnt at high temperature ranging from 900 to 1000 o C Incineration All of these Chlorination Ozonation 40 / 50 MASS of sulpher is....... 23g 72g 32g 92g 41 / 50 The components of lithosphere are Soil Organic matter of earth crust All of these Mineral of earth crust 42 / 50 Which of the following sulphates is not soluble in water? Barium sulphate Zinc sulphate Potassium sulphate Sodium sulphate 43 / 50 The element that has a giant covalent structure is Graphite silicon (Si) All Silicon dioxide (silica) 44 / 50 The alkali metals, which have radioactive isotopes Na K and Rb K Li 45 / 50 Valency of carbon is: 6 8 2 4 46 / 50 In the periodic table each period begins with a metal, which is Most electropositive Less electropositive Most electronegative Less electronegative 47 / 50 Mass of sodium in 53 g of Na2CO3 is 46 g 106 g 92 g 23 g 48 / 50 which molecule or structure does not contain three atoms bonded at an angle between 109° and 110°? Ethylene (C2H4) Methane (CH4) All Graphite. 49 / 50 As the atomic number of the halogen increases, the halogens Gain electrons less easily Become less dense Becomes lighter in color Lose their outermost electrons less easily 50 / 50 Seventh period consists of……………….normal elements? 8 2 4 3 Your score is 0% Restart quiz
