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 In H2O, ........ hybridization is present. Sp4 Sp2 Sp3 Sp 2 / 50 Which of the following is a mixture of low-boiling hydrocarbons? Glycerol Propanoic acid Gasoline Ethanol 3 / 50 The whole universe is made up of almost Hydrogen? 80% 70% 80% 20% 4 / 50 MASS of sulpher is....... 72g 23g 32g 92g 5 / 50 Cesium and Francium are liquids above 30 o C 15 o C 10 o C 20 o C 6 / 50 The hydrides which are non stoichiometric in nature are Complex Ionic Interstitial Covalent 7 / 50 The most reactive allotropic form of phosphorus is Green Yellow White Pink 8 / 50 Ionization energy is lowest for Alkaline earth metals Inert gases Alkali metals Halogens 9 / 50 ______ classified the then known elements into metals, non metals and their derivatives Newlands Al – Razi Dobreiner Mendeleeve 10 / 50 Which of the following sulphates is not soluble in water? Zinc sulphate Barium sulphate Sodium sulphate Potassium sulphate 11 / 50 In the periodic table each period begins with a metal, which is Most electropositive Less electropositive Less electronegative Most electronegative 12 / 50 The chemical formula of camphor is C3H4O C10H16O CHO C8H6O 13 / 50 The components of lithosphere are Organic matter of earth crust All of these Soil Mineral of earth crust 14 / 50 The mass of one mole of electron is 0.054 mg 0.54 mg 0.184 mg 1.008 mg 15 / 50 Chile saltpeter had the chemical formula Na2 CO3 H 2 O Na 2 B4 O7 KNO3 NaNO 3 16 / 50 How many Faradays of electricity are required to remove one mole of AlCl3? 7 3 5 8 17 / 50 Which of the following factors help to measure quality of water? All of the above COD BOD DO 18 / 50 Valency of carbon is: 8 6 4 2 19 / 50 The ionic halides in order of decreasing m.p and b.p can be arranges as Chloride>bromide>iodide>fluoride Iodide>bromide>chloride> fluoride Fluoride>chloride>bromide>iodide Bromide>chloride>fluoride>iodide 20 / 50 Under what category can a floor cleaning agent that serves to make floors bacteria-free be placed: All Disinfectant Bleach Alcohol 21 / 50 Mass of sodium in 53 g of Na2CO3 is 106 g 92 g 23 g 46 g 22 / 50 The total number of bonds in CaC2 is: One sigma bond and one pi bonds two sigma bond and two pi bonds two sigma bond and one pi bonds One sigma bond and two pi bonds 23 / 50 Seventh period consists of……………….normal elements? 4 2 8 3 24 / 50 Which organic compound does not undergo the Cannizzaro reaction? Ketones α-Hydroxy aldehydes Aromatic compounds Aldehydes 25 / 50 UV radiation from the sun causes a reaction that produces O3 SO2 Flourides CO 26 / 50 The mass of 0.5 mole of Aluminum iS 13.5 g 13 g 27 g 14 g 27 / 50 Ozone is located in Troposphere Stratosphere Mesosphere Thermosphere 28 / 50 The hydrogen, which is present in the atmosphere of sun and stars in a large amount, is H H - H 2 H3 29 / 50 The process in solid waste is burnt at high temperature ranging from 900 to 1000 o C Ozonation All of these Incineration Chlorination 30 / 50 Disease caused by eating fish in water contaminated with industrial waste having mercury Hashmitos disease Brights dieses Arthritis Minamat disease 31 / 50 The pH range of acid rain is 6 – 8 6.5 – 7 5 – 7 Less than 5 32 / 50 Which of the following elements react with steam to produce H2 gas? Sn Pd Ni All of the above 33 / 50 The alkali metals, which have radioactive isotopes K and Rb Li K Na 34 / 50 The element that has a giant covalent structure is Silicon dioxide (silica) Graphite silicon (Si) All 35 / 50 Elements with seven electrons in their valence shell are known as Halogens Inert Lanthanides Alkali metals 36 / 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 37 / 50 Environmental pollution affects Biotic components Plants only Biotic and abiotic components of environment Man only 38 / 50 The pollutant which play an important role in smog formation NH 3 H2 S All of these CO 39 / 50 What value is the pH of a 10^-10 M NaOH solution closely related to? 3 7 5 5 40 / 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 41 / 50 which molecule or structure does not contain three atoms bonded at an angle between 109° and 110°? Graphite. All Ethylene (C2H4) Methane (CH4) 42 / 50 1 mole of hydrogen contains ....... 7g of hydrogen 4g of hydrogen 1g of hydrogen 2g of hydrogen 43 / 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 720°C 44 / 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 520°C 690°C 620°C 45 / 50 Unit of dipole moment is.? m-4 m-3 m-2 m-7 46 / 50 Lead is Radioactive pollutant Air pollutant Soil pollutant Noise pollutan 47 / 50 Fish die in water bodies polluted by sewage due to Clogging of gills by silt Foul smell Reduction in oxygen Pathogens 48 / 50 The yellow color in photochemical smog is due to presence of _______ None Chlorine gas Carbon dioxide Nitrogen dioxide 49 / 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 50 / 50 __________is study about energy of a chemical system None Organichemistry thermochemistry Biochemistry Your score is 0% Restart quiz
