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