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