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 Which organic compound does not undergo the Cannizzaro reaction? α-Hydroxy aldehydes Ketones Aromatic compounds Aldehydes 2 / 50 The pollutant which play an important role in smog formation CO NH 3 H2 S All of these 3 / 50 The hydrogen, which is present in the atmosphere of sun and stars in a large amount, is H - H 2 H3 H 4 / 50 Fish die in water bodies polluted by sewage due to Reduction in oxygen Pathogens Clogging of gills by silt Foul smell 5 / 50 Mass of sodium in 53 g of Na2CO3 is 23 g 106 g 46 g 92 g 6 / 50 The alkali metals, which have radioactive isotopes K K and Rb Na Li 7 / 50 Which of the following is a mixture of low-boiling hydrocarbons? Glycerol Propanoic acid Gasoline Ethanol 8 / 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 620°C 720°C 520°C 9 / 50 Which of the following elements react with steam to produce H2 gas? Pd All of the above Ni Sn 10 / 50 Lead is Air pollutant Soil pollutant Noise pollutan Radioactive pollutant 11 / 50 Unit of dipole moment is.? m-4 m-3 m-7 m-2 12 / 50 1 mole of hydrogen contains ....... 2g of hydrogen 7g of hydrogen 4g of hydrogen 1g of hydrogen 13 / 50 Elements with seven electrons in their valence shell are known as Alkali metals Inert Halogens Lanthanides 14 / 50 Seventh period consists of……………….normal elements? 3 2 4 8 15 / 50 The whole universe is made up of almost Hydrogen? 80% 80% 70% 20% 16 / 50  Which one of the following makes the bulk of hydrosphere’s content? Oceans All have equal distribution Glaciers & ice Fresh water lakes and ponds 17 / 50 Ionization energy is lowest for Inert gases Alkaline earth metals Halogens Alkali metals 18 / 50 Valency of carbon is: 2 4 6 8 19 / 50 Which of the following sulphates is not soluble in water? Zinc sulphate Potassium sulphate Barium sulphate Sodium sulphate 20 / 50 The element that has a giant covalent structure is Silicon dioxide (silica) All silicon (Si) Graphite 21 / 50 As the atomic number of the halogen increases, the halogens Becomes lighter in color Gain electrons less easily Become less dense Lose their outermost electrons less easily 22 / 50 The mass of one mole of electron is 0.184 mg 1.008 mg 0.054 mg 0.54 mg 23 / 50 Ozone is located in Troposphere Stratosphere Mesosphere Thermosphere 24 / 50 The components of lithosphere are Soil All of these Mineral of earth crust Organic matter of earth crust 25 / 50 The mass of 0.5 mole of Aluminum iS 13 g 14 g 13.5 g 27 g 26 / 50 The chemical formula of camphor is C8H6O C10H16O C3H4O CHO 27 / 50 Environmental pollution affects Biotic components Man only Plants only Biotic and abiotic components of environment 28 / 50 The yellow color in photochemical smog is due to presence of _______ Chlorine gas Carbon dioxide None Nitrogen dioxide 29 / 50 Disease caused by eating fish in water contaminated with industrial waste having mercury Brights dieses Hashmitos disease Minamat disease Arthritis 30 / 50 Cesium and Francium are liquids above 30 o C 15 o C 10 o C 20 o C 31 / 50 The pH range of acid rain is 6 – 8 5 – 7 Less than 5 6.5 – 7 32 / 50 What value is the pH of a 10^-10 M NaOH solution closely related to? 5 3 5 7 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 620°C 820°C 520°C 34 / 50 which molecule or structure does not contain three atoms bonded at an angle between 109° and 110°? Methane (CH4) Ethylene (C2H4) Graphite. All 35 / 50 How many Faradays of electricity are required to remove one mole of AlCl3? 5 3 7 8 36 / 50 __________is study about energy of a chemical system Biochemistry thermochemistry None Organichemistry 37 / 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 38 / 50 The hydrides which are non stoichiometric in nature are Interstitial Ionic Covalent Complex 39 / 50 UV radiation from the sun causes a reaction that produces O3 SO2 Flourides CO 40 / 50 The process in solid waste is burnt at high temperature ranging from 900 to 1000 o C Ozonation All of these Incineration Chlorination 41 / 50 Which of the following factors help to measure quality of water? COD All of the above BOD DO 42 / 50 The total number of bonds in CaC2 is: One sigma bond and two pi bonds two sigma bond and two pi bonds two sigma bond and one pi bonds One sigma bond and one pi bonds 43 / 50 Under what category can a floor cleaning agent that serves to make floors bacteria-free be placed: Disinfectant All Bleach Alcohol 44 / 50 In H2O, ........ hybridization is present. Sp3 Sp4 Sp2 Sp 45 / 50 In the periodic table each period begins with a metal, which is Less electropositive Most electronegative Most electropositive Less electronegative 46 / 50 ______ classified the then known elements into metals, non metals and their derivatives Al – Razi Newlands Dobreiner Mendeleeve 47 / 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 Bromide>chloride>fluoride>iodide Fluoride>chloride>bromide>iodide 48 / 50 Chile saltpeter had the chemical formula KNO3 Na 2 B4 O7 Na2 CO3 H 2 O NaNO 3 49 / 50 The most reactive allotropic form of phosphorus is Green Yellow Pink White 50 / 50 MASS of sulpher is....... 32g 92g 23g 72g Your score is 0% Restart quiz
