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