Chemistry Test 3 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 of the species is not paramagnetic? Cl- Be+ NeĀ²+ As+ 2 / 50 Cesium and Francium are liquids above 20 o C 30 o C 10 o C 15 o C 3 / 50 Which of the following is more acidic in nature? Aniline Cresol Phenol Benzene 4 / 50 What is the chemical formula of wood spirit? C2H6O CH4O2 CH3OH C3H8O3 5 / 50 The most reactive allotropic form of phosphorus is Green White Pink Yellow 6 / 50 The energy obtained from electric cells and batteries as a result of a chemical reaction is called: chemical energy Potential Energy Electrical Energy None 7 / 50 What is the geometry of an H2S molecule? Bent Curve Rectangular Linear 8 / 50 The Celsius scale starts from: 32Ā°š¹ 0Ā°š¶ 373 š¾ 273 š¾ 9 / 50 Which of the following is a mixture of low-boilinghydrocarbons? Glycerol Gasoline Propanoic acid Ethanol 10 / 50 The whole universe is made up of almost Hydrogen? 70% 80% 20% 80% 11 / 50 Most abundant element in earth's crust is: B Ni Si Ne 12 / 50 Cobalt (Co) has ....... unpaired electrons in its 3d orbital. 8 3 6 1 13 / 50 The product of the nucleophilic substitution reaction between 2-iodobutane and sodium ethoxide (CH3CH2ONa) is CH3CH2OCH2CH2CH3 CH2CH2CH3 CH3CH2OCH2CH2CH2 CH2CH2OCHCH2CH3 14 / 50 Due to the high reactivity nature of the alkali metals, they are found in. Not free in nature Bounded with other elements Free in nature All of the above 15 / 50 Electronic configuration of alkaline earth element is: ns ns2 ns3 ns6 16 / 50 If an object is lying on a horizontal frictionless surface, and the angle is 90 0 60 45 17 / 50 Find the fraction of the total pressure exerted byhydrogen if it is mixed with ethane in an emptycontainer at 25Ā°C. 15/18 17/16 32/16 15/16 18 / 50 H2SO4 is a/an: ACID Alkaline Acid All of these Base 19 / 50 bond energy of hydrogen(H2)is..... 105.3kcal/mol. 4.3kcal/mol. 3kcal/mol. 104.3kcal/mol. 20 / 50 Valency of carbon is: 4 5 3 6 21 / 50 Which block of elements are known as transitionelements? d-block S_block A-block None 22 / 50 The hydrides which are non stoichiometric in nature are Ionic Interstitial Covalent Complex 23 / 50 The velocity of photon is: All independent of its time independent of its mass independent of its wavelength 24 / 50 which of the following element have unpaired electrons in s subshell Cr Mn Fe Co 25 / 50 Which organic compound does not undergo the Cannizzaro reaction? Aldehydes Ketones Aromatic compounds Ī±-Hydroxy aldehydes 26 / 50 nP2=30 where the value of n? 6 4 5 7 27 / 50 Oxidation state of sodium +7 +2 +3 +1 28 / 50 As the atomic number of the halogen increases, the halogens Become less dense Gain electrons less easily Becomes lighter in color Lose their outermost electrons less easily 29 / 50 Most abundant element in earth's crust is: N Ni Be Si 30 / 50 skyscraper meaning Canal Ground Building River 31 / 50 In 32.5 g of CH4 the percentage of carbon is....... 54.87% 74.87%. 77.87%. 84.87%. 32 / 50 NMR spectroscopy is used for: for Magnetic field Studying the dynamics of molecules None 33 / 50 Marsh gas is Methene Ethene Methane Ethane 34 / 50 Which of the species is not paramagnetic? As+ NeĀ²+ Be+ Cl- 35 / 50 Structural formula of cycloalkane is..... C8n6Hn8 CnHn CnH2n Cn2H5n 36 / 50 What value is the pH of a 10^-10 M NaOH solution closely related to? 8 7 5 6 37 / 50 How many Faradays of electricity are required to remove one mole of AlCl3? 7 5 3 8 38 / 50 Methylformate and acetic acid are which type of isomers. chain isomers Tautomeric Functional Position isomers 39 / 50 If the density of a cube is determined by measuring the mass and length of its side, and the maximum error in measurement of mass and length is 3% and 2% respectively, what will be the maximum error in the measurement of density? 9.2% 9.2% 3.2% 4.2% 40 / 50 The property of carbon chain formation is called Catenation Digestion Purification None 41 / 50 The element that has a giant covalent structure is: silicon (Si) Boron nitride Diamond All 42 / 50 Find the temperature at which the rate of effusion of Nā is 1.625 times to that of SOā at 500Ā°C 620Ā°C 660Ā°C 520Ā°C 320Ā°C 43 / 50 4.184calories=? 6.89joules 76.89joules 17.89joules 176.89joules 44 / 50 The whole universe is made up of almost Hydrogen? 70% 20% 7% 80% 45 / 50 The reaction of an acid and metal carbonate willlead to formation? acid + metal carbonate ā salt + water + carbon dioxide acid + metal carbonate ā salt + metal carbonate ā salt + water acid + metal carbonate ā salt + water 46 / 50 Carbon atoms of diamond are sp7 hybridized sp hybridized sp2 hybridized sp3 hybridized 47 / 50 If a man travel 90km in 1 hour and 40 minutes. He will cover 1km in 1.11min 1.2min 1.7min 1.3min 48 / 50 Which of the following is similar to electron š¾ ā rays š½ ā rays š¼ ā rays Photons 49 / 50 Baking powder is: sodium + tartaric sodium bicarbonate + sodium tartaric sodium bicarbonate + Potassium tartaric None 50 / 50 The most reactive allotropic form of phosphorus is: Pink Green Yellow White Your score is 0% Restart quiz
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