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