Chemistry Test 1 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 Neutron was discovered by Chadwick in: 1987 1923 1932 1935 2 / 50 Which of the following enzymes converts maltose to glucose? Maltase Diastase Lactase Zymase 3 / 50 Structural formula of cycloalkane is..... CnH2n CnHn Cn2H5n C8n6Hn8 4 / 50 Carbon atoms of diamond are: sp2 hybridized sp3 hybridized sp1 hybridized Not hybridized 5 / 50 Which of the species is not paramagnetic? Ne²+ Cl- As+ Be+ 6 / 50 On electrolysis of NaOH, hydrogen is liberated At anode none of them At cathode in the electrolyte 7 / 50 Which one of the following is an incorrect statement? 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 The electronegativity of fluorine is greater than that of chlorine. 8 / 50 Which of the following is a mixture of low-boiling hydrocarbons? Gasoline Glycerol Propanoic acid Ethanol 9 / 50 Which halogen has the smallest electron affinity? F Br I Cl 10 / 50 How many structural isomers are present for trichloro propane C3H5Cl3. 5 0 8 3 11 / 50 Which of the following elements has the highest electronegativity? Fluorine (F) Nitrogen (N) Chlorine (Cl) Oxygen (O) 12 / 50 The whole universe is made up of almost Hydrogen? 70% 90% 40% 60% 13 / 50 Dipole moment of CO2 is...... 0 4 2 7 14 / 50 Which of the following is more acidic in nature? p-nitrobenzene Phenol Benzene Cresol 15 / 50 Which organic compound does not undergo the Cannizzaro reaction? Aromatic compounds Aldehydes α-Hydroxy aldehydes Ketones 16 / 50 The mass of one mole of electron is 0.054 mg 1.008 mg 0.184 mg 0.54 mg 17 / 50 According to molecular orbital theory, what is the bond order of Li2+? 1 0.5 5 5.5 18 / 50 Which carbohydrate is the least sweet? Sucrose Fructose Glucose Starch 19 / 50 Which of the following best describes the nature of ammonium chloride? Strong acid Strong base Neutral substance Weak acid 20 / 50 Mark the correct statement: Na+ is larger than Na atom CI- and CI are equal in size Na+ is smaller than Na atom CI- is smaller than CI atom 21 / 50 In 32.5 g of CH4 the percentage of carbon is....... 74.87%. 54.87% 77.87%. 84.87%. 22 / 50 Which of the following is the best option for disinfecting your slab? Bleach (Sodium hypochlorite) Vinegar (Acetic acid) Sulphur Phenols 23 / 50 Number of free electrons in nickel Ni2+ 3 2 8 8 24 / 50 Oxidation state of sodium +4 +1 +5 +8 25 / 50 Valency of carbon is: 4 6 2 8 26 / 50 Molarity of 10g of NAOH is...... 7.32 1.25 0 2.43 27 / 50 How many types of amino acids form the proteins in the body? 20 10 30 60 28 / 50 Oxidation number of CARBON in GLUCOSE is....... 4 0 6 21 29 / 50 Ionization energy is lowest for Alkali metals Inert gases Alkaline earth metals Halogens 30 / 50 Find the temperature at which the rate of effusion of N₂ is 1.625 times to that of SO₂ at 500°C 690°C 820°C 620°C 520°C 31 / 50 What is the pH of a solution with 0.0001 M HCl? 4 0 7 3 32 / 50 The ratio of the water molecule in plaster of Paris and gypsum is 1:8 1:9 1:6 1:4 33 / 50 How many calories are in fat……………..? 8 6 4 9 34 / 50 The molarity of CH4 is...... 32.042g/mol 45.042g/mol 65.042g/mol 16.042g/mol 35 / 50 If absolute temperature of a gas is doubled and the pressure is reduced to one half the volume of gas will: decrease four times increases four times increases two times decrease two times 36 / 50 Industrial waste water contains: Pathogens All of these Occluded & dissolved gases Inorganic salts & organic compounds 37 / 50 “s” and “p” block elements are also called Transition elements Rare earth elements Typical elements Inert elements 38 / 50 Seventh period consists of……………….normal elements? 8 2 3 4 39 / 50 which of the following element have unpaired electrons in s subshell Co Cr Fe Mn 40 / 50 Find PH of 0.001m of HCL: 3 4 2 8 41 / 50 At equilibrium, the amount of product and reactant becomes........ Increase 4 time NOT EQUAL increase 2 time EQUAL 42 / 50 MASS of sulpher is....... 72g 32g 92g 23g 43 / 50 Benzene is good solvent for: Resins Fats All Iodine 44 / 50 Brine is used for industrial production of NaOH NHO KCL HCL 45 / 50 The ionization energy of Hydrogen is ? 13.6ev 12.54ev 10.54ev 17.56ev 46 / 50 Which organic compound does not undergo the Cannizzaro reaction? α-Hydroxy aldehydes Aromatic compounds Aldehydes Ketones 47 / 50 Which of the following is soft Coal? Anthracite Lignite Bituminous Peat 48 / 50 Presence of heavy metals in water causes Cancer All of these Mental retardation Nervous disorder 49 / 50 __________is study about energy of a chemical system Organichemistry thermochemistry None Biochemistry 50 / 50 Which of the following elements react with steam to produce H2 gas? Pd Ni Sn All of the above Your score is 0% Restart quiz
