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