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 components of lithosphere are Organic matter of earth crust All of these Soil Mineral of earth crust 2 / 50 The yellow color in photochemical smog is due to presence of _______ Carbon dioxide None Nitrogen dioxide Chlorine gas 3 / 50 Lead is Air pollutant Noise pollutan Radioactive pollutant Soil pollutant 4 / 50 The pH range of acid rain is 5 – 7 6 – 8 6.5 – 7 Less than 5 5 / 50 Mass of sodium in 53 g of Na2CO3 is 23 g 46 g 92 g 106 g 6 / 50 The element that has a giant covalent structure is Graphite silicon (Si) Silicon dioxide (silica) All 7 / 50 Ionization energy is lowest for Halogens Alkali metals Inert gases Alkaline earth metals 8 / 50 Cesium and Francium are liquids above 15 o C 10 o C 30 o C 20 o C 9 / 50 UV radiation from the sun causes a reaction that produces SO2 O3 Flourides CO 10 / 50 The hydrogen, which is present in the atmosphere of sun and stars in a large amount, is H 2 H3 H H - 11 / 50  Which one of the following makes the bulk of hydrosphere’s content? Glaciers & ice Oceans Fresh water lakes and ponds All have equal distribution 12 / 50 In H2O, ........ hybridization is present. Sp Sp3 Sp2 Sp4 13 / 50 Ozone is located in Mesosphere Stratosphere Troposphere Thermosphere 14 / 50 What value is the pH of a 10^-10 M NaOH solution closely related to? 5 3 5 7 15 / 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 820°C 520°C 690°C 16 / 50 __________is study about energy of a chemical system None Organichemistry Biochemistry thermochemistry 17 / 50 Which of the following factors help to measure quality of water? DO All of the above BOD COD 18 / 50 Which organic compound does not undergo the Cannizzaro reaction? Aromatic compounds α-Hydroxy aldehydes Ketones Aldehydes 19 / 50 Which of the following sulphates is not soluble in water? Zinc sulphate Barium sulphate Potassium sulphate Sodium sulphate 20 / 50 ______ classified the then known elements into metals, non metals and their derivatives Newlands Dobreiner Mendeleeve Al – Razi 21 / 50 Elements with seven electrons in their valence shell are known as Lanthanides Inert Alkali metals Halogens 22 / 50 The pollutant which play an important role in smog formation H2 S NH 3 All of these CO 23 / 50 The alkali metals, which have radioactive isotopes Na K Li K and Rb 24 / 50 Chile saltpeter had the chemical formula Na 2 B4 O7 KNO3 NaNO 3 Na2 CO3 H 2 O 25 / 50 The whole universe is made up of almost Hydrogen? 20% 80% 70% 80% 26 / 50 In the periodic table each period begins with a metal, which is Less electronegative Less electropositive Most electropositive Most electronegative 27 / 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 720°C 690°C 620°C 28 / 50 MASS of sulpher is....... 32g 92g 72g 23g 29 / 50 The chemical formula of camphor is CHO C8H6O C3H4O C10H16O 30 / 50 Seventh period consists of……………….normal elements? 2 8 3 4 31 / 50 Which of the following elements react with steam to produce H2 gas? Pd All of the above Ni Sn 32 / 50 which molecule or structure does not contain three atoms bonded at an angle between 109° and 110°? Ethylene (C2H4) Methane (CH4) All Graphite. 33 / 50 How many Faradays of electricity are required to remove one mole of AlCl3? 7 8 3 5 34 / 50 The total number of bonds in CaC2 is: One sigma bond and one pi bonds two sigma bond and one pi bonds two sigma bond and two pi bonds One sigma bond and two pi bonds 35 / 50 The hydrides which are non stoichiometric in nature are Interstitial Covalent Ionic Complex 36 / 50 Which one of the following is an incorrect statement? The electron affinity of fluorine is greater than that of chlorine he ionization potential of beryllium is greater than that of boron The electronegativity of fluorine is greater than that of chlorine. The ionization potential of nitrogen is greater than that of chlorine 37 / 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 38 / 50 The process in solid waste is burnt at high temperature ranging from 900 to 1000 o C Ozonation All of these Chlorination Incineration 39 / 50 Environmental pollution affects Biotic and abiotic components of environment Plants only Biotic components Man only 40 / 50 The most reactive allotropic form of phosphorus is Pink Green Yellow White 41 / 50 Valency of carbon is: 6 4 8 2 42 / 50 Which of the following is a mixture of low-boiling hydrocarbons? Ethanol Gasoline Glycerol Propanoic acid 43 / 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 44 / 50 Fish die in water bodies polluted by sewage due to Foul smell Clogging of gills by silt Reduction in oxygen Pathogens 45 / 50 Disease caused by eating fish in water contaminated with industrial waste having mercury Arthritis Hashmitos disease Minamat disease Brights dieses 46 / 50 Unit of dipole moment is.? m-3 m-2 m-4 m-7 47 / 50 The mass of one mole of electron is 1.008 mg 0.54 mg 0.184 mg 0.054 mg 48 / 50 Under what category can a floor cleaning agent that serves to make floors bacteria-free be placed: Bleach Alcohol All Disinfectant 49 / 50 The mass of 0.5 mole of Aluminum iS 13.5 g 14 g 13 g 27 g 50 / 50 1 mole of hydrogen contains ....... 2g of hydrogen 4g of hydrogen 7g of hydrogen 1g of hydrogen Your score is 0% Restart quiz
