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 What value is the pH of a 10^-10 M NaOH solution closely related to? 5 8 7 6 2 / 50 nP2=30 where the value of n? 4 5 7 6 3 / 50 Which of the following is a mixture of low-boiling hydrocarbons? Gasoline Glycerol Propanoic acid Ethanol 4 / 50 Valency of carbon is: 4 6 5 3 5 / 50 The most reactive allotropic form of phosphorus is White Green Yellow Pink 6 / 50 Structural formula of cycloalkane is..... CnHn CnH2n Cn2H5n C8n6Hn8 7 / 50 How many Faradays of electricity are required to remove one mole of AlCl3? 3 7 8 5 8 / 50 bond energy of hydrogen(H2)is..... 104.3kcal/mol. 3kcal/mol. 4.3kcal/mol. 105.3kcal/mol. 9 / 50 Which block of elements are known as transition elements? A-block d-block S_block None 10 / 50 Which of the species is not paramagnetic? As+ Cl- Ne²+ Be+ 11 / 50 Electronic configuration of alkaline earth element is: ns3 ns6 ns ns2 12 / 50 The product of the nucleophilic substitution reaction between 2-iodobutane and sodium ethoxide (CH3CH2ONa) is CH3CH2OCH2CH2CH2 CH2CH2CH3 CH3CH2OCH2CH2CH3 CH2CH2OCHCH2CH3 13 / 50 skyscraper meaning Building River Ground Canal 14 / 50 The Celsius scale starts from: 32°𝐹 373 𝐾 0°𝐶 273 𝐾 15 / 50 Due to the high reactivity nature of the alkali metals, they are found in. Free in nature Not free in nature All of the above Bounded with other elements 16 / 50 Cobalt (Co) has ....... unpaired electrons in its 3d orbital. 3 6 1 8 17 / 50 In 32.5 g of CH4 the percentage of carbon is....... 74.87%. 54.87% 84.87%. 77.87%. 18 / 50 If an object is lying on a horizontal frictionless surface, and the angle is 60 0 45 90 19 / 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? 4.2% 9.2% 9.2% 3.2% 20 / 50 Carbon atoms of diamond are sp2 hybridized sp hybridized sp7 hybridized sp3 hybridized 21 / 50 Cesium and Francium are liquids above 10 o C 20 o C 15 o C 30 o C 22 / 50 Find the fraction of the total pressure exerted by hydrogen if it is mixed with ethane in an empty container at 25°C. 15/18 15/16 32/16 17/16 23 / 50 Marsh gas is Ethene Methane Methene Ethane 24 / 50 which of the following element have unpaired electrons in s subshell Cr Mn Fe Co 25 / 50 Most abundant element in earth's crust is: Si Ni Be N 26 / 50 Find the temperature at which the rate of effusion of N₂ is 1.625 times to that of SO₂ at 500°C 660°C 620°C 320°C 520°C 27 / 50 If a man travel 90km in 1 hour and 40 minutes. He will cover 1km in 1.7min 1.3min 1.2min 1.11min 28 / 50 NMR spectroscopy is used for: Studying the dynamics of molecules for Magnetic field None 29 / 50 The whole universe is made up of almost Hydrogen? 80% 20% 7% 70% 30 / 50 H2SO4 is a/an: Alkaline Acid All of these ACID Base 31 / 50 Which of the following is more acidic in nature? Benzene Cresol Phenol Aniline 32 / 50 Which organic compound does not undergo the Cannizzaro reaction? Aromatic compounds α-Hydroxy aldehydes Aldehydes Ketones 33 / 50 What is the geometry of an H2S molecule? Linear Curve Rectangular Bent 34 / 50 As the atomic number of the halogen increases, the halogens Becomes lighter in color Become less dense Gain electrons less easily Lose their outermost electrons less easily 35 / 50 Which of the species is not paramagnetic? As+ Be+ Ne²+ Cl- 36 / 50 The most reactive allotropic form of phosphorus is: Yellow Green White Pink 37 / 50 Baking powder is: sodium + tartaric sodium bicarbonate + sodium tartaric None sodium bicarbonate + Potassium tartaric 38 / 50 4.184calories=? 76.89joules 176.89joules 17.89joules 6.89joules 39 / 50 Methylformate and acetic acid are which type of isomers. Position isomers Functional chain isomers Tautomeric 40 / 50 The whole universe is made up of almost Hydrogen? 70% 80% 80% 20% 41 / 50 What is the chemical formula of wood spirit? CH3OH C2H6O C3H8O3 CH4O2 42 / 50 The velocity of photon is: All independent of its wavelength independent of its mass independent of its time 43 / 50 Oxidation state of sodium +7 +3 +2 +1 44 / 50 The property of carbon chain formation is called Purification Catenation Digestion None 45 / 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 46 / 50 The hydrides which are non stoichiometric in nature are Covalent Complex Ionic Interstitial 47 / 50 Which of the following is similar to electron 𝛾 – rays 𝛼 − rays 𝛽 − rays Photons 48 / 50 The element that has a giant covalent structure is: silicon (Si) All Boron nitride Diamond 49 / 50 Most abundant element in earth's crust is: Ni Si Ne B 50 / 50 The reaction of an acid and metal carbonate will lead to formation? metal carbonate → salt + water acid + metal carbonate → salt + acid + metal carbonate → salt + water acid + metal carbonate → salt + water + carbon dioxide Your score is 0% Restart quiz
To take a preparation with this app