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