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 Valency of carbon is: 6 4 8 2 2 / 50 Unit of dipole moment is.? m-7 m-2 m-4 m-3 3 / 50 The hydrides which are non stoichiometric in nature are Ionic Covalent Interstitial Complex 4 / 50 The hydrogen, which is present in the atmosphere of sun and stars in a large amount, is H - H H3 H 2 5 / 50 The element that has a giant covalent structure is Silicon dioxide (silica) silicon (Si) All Graphite 6 / 50 which molecule or structure does not contain three atoms bonded at an angle between 109° and 110°? All Graphite. Methane (CH4) Ethylene (C2H4) 7 / 50 Which of the following elements react with steam to produce H2 gas? Pd Sn All of the above Ni 8 / 50 Which of the following is a mixture of low-boiling hydrocarbons? Gasoline Propanoic acid Glycerol Ethanol 9 / 50 In H2O, ........ hybridization is present. Sp4 Sp Sp3 Sp2 10 / 50 The total number of bonds in CaC2 is: two sigma bond and one pi bonds One sigma bond and two pi bonds two sigma bond and two pi bonds One sigma bond and one pi bonds 11 / 50 The mass of 0.5 mole of Aluminum iS 13 g 14 g 13.5 g 27 g 12 / 50 The whole universe is made up of almost Hydrogen? 80% 80% 70% 20% 13 / 50 What value is the pH of a 10^-10 M NaOH solution closely related to? 3 5 5 7 14 / 50 MASS of sulpher is....... 32g 92g 72g 23g 15 / 50 Chile saltpeter had the chemical formula NaNO 3 Na2 CO3 H 2 O KNO3 Na 2 B4 O7 16 / 50 __________is study about energy of a chemical system None thermochemistry Organichemistry Biochemistry 17 / 50 UV radiation from the sun causes a reaction that produces CO O3 Flourides SO2 18 / 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 ionization potential of nitrogen is greater than that of chlorine The electron affinity of fluorine is greater than that of chlorine 19 / 50 The most reactive allotropic form of phosphorus is White Green Pink Yellow 20 / 50 1 mole of hydrogen contains ....... 7g of hydrogen 2g of hydrogen 1g of hydrogen 4g of hydrogen 21 / 50 Under what category can a floor cleaning agent that serves to make floors bacteria-free be placed: Bleach Alcohol All Disinfectant 22 / 50 The chemical formula of camphor is C8H6O C3H4O CHO C10H16O 23 / 50 The mass of one mole of electron is 0.54 mg 0.054 mg 0.184 mg 1.008 mg 24 / 50 The pollutant which play an important role in smog formation CO NH 3 H2 S All of these 25 / 50 The process in solid waste is burnt at high temperature ranging from 900 to 1000 o C Incineration Ozonation All of these Chlorination 26 / 50 Ionization energy is lowest for Alkaline earth metals Alkali metals Inert gases Halogens 27 / 50 The ionic halides in order of decreasing m.p and b.p can be arranges as Fluoride>chloride>bromide>iodide Chloride>bromide>iodide>fluoride Iodide>bromide>chloride> fluoride Bromide>chloride>fluoride>iodide 28 / 50 In the periodic table each period begins with a metal, which is Most electronegative Most electropositive Less electropositive Less electronegative 29 / 50 Find the temperature at which the rate of effusion of N₂ is 1.625 times to that of SO₂ at 500°C 720°C 620°C 690°C 520°C 30 / 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 620°C 520°C 690°C 31 / 50 Which organic compound does not undergo the Cannizzaro reaction? α-Hydroxy aldehydes Ketones Aldehydes Aromatic compounds 32 / 50 Disease caused by eating fish in water contaminated with industrial waste having mercury Arthritis Minamat disease Brights dieses Hashmitos disease 33 / 50 Cesium and Francium are liquids above 30 o C 15 o C 20 o C 10 o C 34 / 50 Lead is Soil pollutant Radioactive pollutant Air pollutant Noise pollutan 35 / 50 Fish die in water bodies polluted by sewage due to Clogging of gills by silt Foul smell Reduction in oxygen Pathogens 36 / 50 ______ classified the then known elements into metals, non metals and their derivatives Mendeleeve Al – Razi Newlands Dobreiner 37 / 50 The pH range of acid rain is 5 – 7 6 – 8 6.5 – 7 Less than 5 38 / 50 Mass of sodium in 53 g of Na2CO3 is 106 g 23 g 46 g 92 g 39 / 50 Ozone is located in Thermosphere Stratosphere Mesosphere Troposphere 40 / 50 How many Faradays of electricity are required to remove one mole of AlCl3? 5 8 3 7 41 / 50 Seventh period consists of……………….normal elements? 2 3 4 8 42 / 50 The alkali metals, which have radioactive isotopes K Li K and Rb Na 43 / 50 Environmental pollution affects Biotic components Man only Biotic and abiotic components of environment Plants only 44 / 50 The components of lithosphere are Soil Organic matter of earth crust Mineral of earth crust All of these 45 / 50 Which of the following sulphates is not soluble in water? Zinc sulphate Potassium sulphate Barium sulphate Sodium sulphate 46 / 50 Which of the following factors help to measure quality of water? All of the above DO BOD COD 47 / 50 The yellow color in photochemical smog is due to presence of _______ None Chlorine gas Nitrogen dioxide Carbon dioxide 48 / 50 Which one of the following makes the bulk of hydrosphere’s content? Glaciers & ice Oceans All have equal distribution Fresh water lakes and ponds 49 / 50 Elements with seven electrons in their valence shell are known as Alkali metals Lanthanides Halogens Inert 50 / 50 As the atomic number of the halogen increases, the halogens Become less dense Becomes lighter in color Lose their outermost electrons less easily Gain electrons less easily Your score is 0% Restart quiz
