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