Basic Concepts of Chemistry Neet Test Series Leave a Comment / CHEMISTRY MOCKTEST NEET, Blog / By admin 9 Sorry! Time up Some Basic Concepts Of Chemistry - NEET (Chemistry) Learn more! Practice more! Score more!Best of Luck! 1 / 50 1) The number of significant figures in 10.3406g is 4 2 3 6 2 / 50 2) 74.5g of metallic chloride contains 35.5 of chlorine. The exact atomic weight of metal is x and its specific heat is 0.0406 Cal/g- ^{o}C. The value of x is 150 157.6 156 155.02 3 / 50 3) The molarity of a solid obtained by mixing 500ml of 0.5M HCL with 200ml of 1M HCL will be 0.64M 0.54M 0.50M 0.75M 4 / 50 4) The percentage of NaOH by weight in a 1.2 molar NaOH solution is 4.5%, the density of the solution will be 2.3 g/ml 1.6 g/ml 1.066 g/ml 1.25 g/ml 5 / 50 5) When 22.4 L of H_{2}(g) in mixed with 11.2L of Cl_{2}(g) each at STP, the moles of at HCL(g) formed is equal to 2 mole of HCl 0.5 mole of HCl 1.5 mole of HCl 1.0 mole of HCl 6 / 50 6) A mole fraction of solute in a one-molal aqueous solution will be 0.0257 0.0177 0.0671 0.52 7 / 50 7) 100 ml of 0.5M H_{2}SO_{4} solution is neutralized by 50ml of 0.1M NaOH and x ml of 0.1M Ca(OH)_{2}. The value of x is 200 ml 370 ml 475 ml 405 ml 8 / 50 8) Nitrogen forms two oxides N_{2}O_{3} and N_{2}O_{5}. Which law can be proved by the weights of N and O? Constant Composition Multiple Proportions Reciprocal Proportions Conversion of mass 9 / 50 9) x mole atoms of nitrogen contain 3.01x10^{23} atoms. The value of x is 0.05 0.5 1.5 1.0 10 / 50 10) The density of 3M solutions of NaCl is 1.25 g/ml. Molality of the solution is 7.92 9.72 2.79 3.98 11 / 50 11) The molarity of 40% NaOH (w/w) solution is 12M. its density will be 1.0 g/m 1.5 g/m 1.2 g/m 1.38 g/m 12 / 50 12) 3 gm Mg reacts with 2 gm of Sulphur to form magnesium sulphide (MgS). Amount of Mg left. unreacted is 0.5 g 1.0 g 1.5 g 2.5 g 13 / 50 13) 17 17/2 17/3 34/3 14 / 50 14) The weight of NaOH required to react completely with 0.1 equivalent of H_{2}SO_{4} is 2 g 2.5 g 3 g 4 g 15 / 50 15) Count the number of significant figures in 0.053 1 2 3 4 16 / 50 16) Conc. HCl contains 38% HCl by mass. The density of the solution is 1.19 g/ml. Calculate its Molarity. 6.24 9.58 12.38 3.94 17 / 50 17) The molality of the solution containing 18.25g of HCl gas in 500g of water is 0.1 m 1 m 0.5 m 0.2 m 18 / 50 18) The mass of N atom in 1 mole of K_{3}[Fe(CN)_{6}] is 14 g 42 g 78 g 84 g 19 / 50 19) 1 g sample of chalk is completely neutralized by 100 ml 0.04N HCl solution. %(w/w) CaCO_{3} in the sample is 20 40 60 80 20 / 50 20) The concentration of Cl- ions in a mixture obtained by mixing 100 mL of 0.1 M NaCl with 40 mL of 0.1 M AgNO_{3} is: 0.1 M 3/70 M 2/70 M 3/140 M 21 / 50 21) 2.76 g silver carbonate on being strongly heated yields a residue weighing 2.16 g 2.48 g 2.32 g 2.64g 22 / 50 22) The volume of air required to completely burn 12g of carbon at STP would be (Air contains 21% oxygen by volume) 106.67 L 118.2 L 120 L 225.4 L 23 / 50 23) The ratio of oxygen in FeO and Fe_{2}O_{3} is (containing equal amount of iron) 1 : 3 2 : 3 1 : 2 3 : 2 24 / 50 24) 2.3 g Na is completely burned to give Na_{2}O, which is then dissolved in 1L. How much H_{2}SO_{4} in gram is needed to neutralise the solution completely? 4.9 g 9.8 g 0.49 g 0.98 g 25 / 50 25) The equivalent weight of Ca(OH)_{2} in this reaction is(M = Formula mass of Ca(OH)_{2}) M/2 M/3 M 2 M 26 / 50 26) The mole fraction of l_{2} in C_{6}H_{2} is 0.2. Molality of l_{2} in C_{6}H_{6} is 3.20 1.40 0.2 0.8 27 / 50 27) 10g of CaCO_{3} is treated with 250 ml of @M HCl solution. Find the normality of HCl in resulting solution 1.8 N 1.2 N 1 N 0.1 N 28 / 50 28) 100 ml of 10 M HCl is diluted to 2 M HCl. The volume of water added is 500 ml 400 ml 300 ml 200 ml 29 / 50 29) The density of a conc. H_{2}SO_{4} solution is 1.5 g/m and the solution is 49% by mass. What volume of this solution will completely neutralize 25 ml of 2 M NaOH solution? 10 ml 6.67 ml 12.5 ml 3.33 ml 30 / 50 30) 6.02 x 10^{20} molecules of sugar are present in 100 ml of its solution. The concentration of sugar solution is 0.001 M 0.1 M 0.02 M 0.01 M 31 / 50 31) Number of significant figures in 142m, 0.141m and 0.0141 m will be respectively 3, 3 and 3 3, 3 and 4 3, 4 and 5 3, 4 and 4 32 / 50 32) The specific heat of an unknown metal is 0.08 cal. g^{-1}.k^{-1}. If the equivalent mass of metal is 13 then the exact atomic mass will be 78 80 52 10.4 33 / 50 33) 0.45g of dibasic acid is completely neutralized by 100 ml N/10 NaOH. The molecular weight of acid is? 45 90 180 22.5 34 / 50 34) How many significant figures are present in 0.200g of substance? 1 2 3 zero 35 / 50 35) The molality(m) of the solution of ethanol in water, when the mole fraction of ethanol is 0.040. 2.31 3.12 1.73 4.01 36 / 50 36) 200 ml decimolar H_{2}SO_{4} snd 300ml decimolar HCl mixture is treated with M/5 NaOH solution. For complete neutralisation of the acid mixture, the volume of NaOH required is 400 ml 250 ml 350 ml 100 ml 37 / 50 37) The amount of water obtained on burning 10 gm of H_{2} in 40 gm of O_{2} is 90 gm 45 gm 40 gm 30 gm 38 / 50 38) If a 1L aq. solution of urea (d = 1.02 g/ml.) has conc. 3M, then the morality of the solution will be 3.57 m 3 m 2.7 m 6 m 39 / 50 39) Number of g-atoms of oxygen present in 360g of glucose? 12 144 6 2 40 / 50 40) 180g of glucose is added to 1000g of water, forming a solution of density 1.18g/ml. Molarity of glucose solution is? 1.2 M 2.0 M 1.8 M 1 M 41 / 50 41) Mole Fraction of urea in its aqueous solution is 0.1. Calculate its morality. 7.7 6.17 2.17 5.55 42 / 50 42) Caustic soda solution is found to be 60% by mass having a density 1.6 g/ml. How much volume of water is to be added to make 7.2L of M/2 solution? 150 ml 7050 ml 705 ml 1500 ml 43 / 50 43) An aqueous solution of 6.3g oxalic acid dihydrate is made up to 250 ml. The volume of 0.1N NaOh required to completely neutralize 10 ml of this solution is 40 ml 20 ml 10 ml 4 ml 44 / 50 44) A compound contains 28% nitrogen and 72% metal by mass. 3 atoms of the metal combine with 2 atoms of nitrogen. The atomic mass of metal is 12 36 24 48 45 / 50 45) If 0.50 mole of BaCl_{2} is mixed with 0.20 mol of Na_{3}PO_{4}, the maximum number of mole Ba_{3}(PO_{4})_{2} that can be formed is 0.70 0.50 0.20 0.10 46 / 50 46) The amount of CO_{2} obtained at S.T.P. on burning 8g charcoal in 30 g O_{2} is 29.33 g 41.25 g 25 g 40 g 47 / 50 47) A + 2B --> 2CIf 5 moles of A and 8 moles of B are reacted, then Whole 'A' will be consumed Whole 'B' will be consumed 10 mole of 'C' will be produced 'A' will be the limiting reagent 48 / 50 48) 100 ml of 0.01N oxalic acid (aq.) represents 100 ml of 0.005M acid 2.5 millimole of acid 2.5 molal of acid All of the above 49 / 50 49) The molality of glucose solution in water is 10m. mole fraction glucose is 10/49 4/39 5/59 9/59 50 / 50 50) Different proportions of oxygen in various oxides of nitrogen proves law of Equivalent proportions Multiple proportions Constant proportions Conservation of mass Your score is The average score is 8% 0% Restart quiz nEXT CHAPTER: Structure of Atom NEET MOCK TEST