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