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 āsā and āpā block elements are also called Rare earth elements Typical elements Inert elements Transition elements 2 / 50 Oxidation state of sodium +1 +5 +8 +4 3 / 50 MASS of sulpher is....... 92g 72g 23g 32g 4 / 50 Which of the following is more acidic in nature? p-nitrobenzene Phenol Benzene Cresol 5 / 50 Presence of heavy metals in water causes Nervous disorder Cancer All of these Mental retardation 6 / 50 Ionization energy is lowest for Halogens Inert gases Alkaline earth metals Alkali metals 7 / 50 According to molecular orbital theory, what is the bond order of Li2+? 0.5 5 5.5 1 8 / 50 Oxidation number of CARBON in GLUCOSE is....... 21 0 6 4 9 / 50 What is the pH of a solution with 0.0001 M HCl? 4 3 7 0 10 / 50 Molarity of 10g of NAOH is...... 7.32 2.43 1.25 0 11 / 50 Carbon atoms of diamond are: sp1 hybridized sp3 hybridized Not hybridized sp2 hybridized 12 / 50 __________is study about energy of a chemical system Organichemistry thermochemistry None Biochemistry 13 / 50 Which organic compound does not undergo the Cannizzaro reaction? Aromatic compounds Ketones Ī±-Hydroxy aldehydes Aldehydes 14 / 50 Which of the following enzymes converts maltose to glucose? Lactase Diastase Zymase Maltase 15 / 50 On electrolysis of NaOH, hydrogen is liberated none of them At anode in the electrolyte At cathode 16 / 50 The whole universe is made up of almostHydrogen? 70% 60% 40% 90% 17 / 50 Which of the following is a mixture of low-boiling hydrocarbons? Ethanol Propanoic acid Glycerol Gasoline 18 / 50 Benzene is good solvent for: All Fats Resins Iodine 19 / 50 Find PH of 0.001m ofĀ HCL: 4 3 2 8 20 / 50 At equilibrium, the amount of product and reactant becomes........ EQUAL NOT EQUAL Increase 4 time increase 2 time 21 / 50 Number of free electrons in nickel Ni2+ 8 2 3 8 22 / 50 In 32.5 g of CH4 the percentage of carbon is....... 74.87%. 54.87% 84.87%. 77.87%. 23 / 50 Find the temperature at which the rate of effusion of Nā is 1.625 times to that of SOā at 500Ā°C 690Ā°C 820Ā°C 520Ā°C 620Ā°C 24 / 50 The mass of one mole of electron is 0.054 mg 0.184 mg 0.54 mg 1.008 mg 25 / 50 Seventh period consists ofā¦ā¦ā¦ā¦ā¦ā¦.normal elements? 3 2 8 4 26 / 50 Which halogen has the smallest electron affinity? Br Cl I F 27 / 50 Brine is used for industrial production of KCL HCL NaOH NHO 28 / 50 Neutron was discovered by Chadwick in: 1932 1987 1923 1935 29 / 50 Mark the correct statement: Na+ is smaller than Na atom CI- is smaller than CI atom Na+ is larger than Na atom CI- and CI are equal in size 30 / 50 The molarity of CH4 is...... 32.042g/mol 65.042g/mol 45.042g/mol 16.042g/mol 31 / 50 Structural formula of cycloalkane is..... CnHn C8n6Hn8 Cn2H5n CnH2n 32 / 50 Which of the following elements has the highest electronegativity? Nitrogen (N) Chlorine (Cl) Oxygen (O) Fluorine (F) 33 / 50 Which of the following is the best option for disinfecting your slab? Sulphur Vinegar (Acetic acid) Phenols Bleach (Sodium hypochlorite) 34 / 50 Which of the following elements react with steam to produce H2 gas? Pd Ni Sn All of the above 35 / 50 The ionization energy of Hydrogen is ? 12.54ev 13.6ev 17.56ev 10.54ev 36 / 50 Industrial waste water contains: Pathogens Inorganic salts & organic compounds Occluded & dissolved gases All of these 37 / 50 Which carbohydrate is the least sweet? Glucose Starch Sucrose Fructose 38 / 50 How many calories are in fatā¦ā¦ā¦ā¦ā¦..? 9 4 8 6 39 / 50 Which of the following best describes the nature of ammonium chloride? Strong base Neutral substance Weak acid Strong acid 40 / 50 Which one of the following is an incorrect statement? he ionization potential of beryllium is greater than that of boron The electron affinity of fluorine is greater than that of chlorine The ionization potential of nitrogen is greater than that of chlorine The electronegativity of fluorine is greater than that of chlorine. 41 / 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 four times increases two times decrease four times 42 / 50 Valency of carbon is: 4 8 2 6 43 / 50 Which of the following is soft Coal? Bituminous Anthracite Peat Lignite 44 / 50 How many structural isomers are present for trichloro propane C3H5Cl3. 0 5 8 3 45 / 50 Which of the species is not paramagnetic? As+ Cl- NeĀ²+ Be+ 46 / 50 Which organic compound does not undergo the Cannizzaro reaction? Aldehydes Ī±-Hydroxy aldehydes Aromatic compounds Ketones 47 / 50 How many types of amino acids form the proteins in the body? 30 20 60 10 48 / 50 The ratio of the water molecule in plaster of Paris and gypsum is 1:9 1:6 1:8 1:4 49 / 50 Dipole moment of CO2 is...... 4 0 7 2 50 / 50 which of the following element have unpaired electrons in s subshell Cr Co Fe Mn Your score is 0% Restart quiz
