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Basic Concepts of Chemistry – Chemistry | NEET Online Mock Test

Online Mock Test Description

Mock TestBasic Concepts of Chemistry
ExamNEET Medical Test
SubjectChemistry
Marks100
No. Questions50 Questions
Time50 Minutes

32

Some Basic Concepts Of Chemistry - NEET (Chemistry)

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1) The number of significant figures in 10.3406g is

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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- oC. The value of x is

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3) The molarity of  a solid obtained by mixing 500ml of 0.5M HCL with 200ml of 1M HCL will be

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4) The percentage of NaOH by weight in a 1.2 molar NaOH solution is 4.5%, the density of the solution will be

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5) When 22.4 L of H2(g) in mixed with 11.2L of Cl2(g) each at STP, the moles of at HCL(g) formed is equal to

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6) A mole fraction of solute in a one-molal aqueous solution will be

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7) 100 ml of 0.5M H2SO4 solution is neutralized by 50ml of 0.1M NaOH and x ml of 0.1M Ca(OH)2. The value of x is

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8) Nitrogen forms two oxides N2O3 and N2O5. Which law can be proved by the weights of N and O?

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9) x mole atoms of nitrogen contain 3.01x1023 atoms. The value of x is

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10) The density of 3M solutions of NaCl is 1.25 g/ml. Molality of the solution is

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11) The molarity of 40% NaOH (w/w) solution is 12M. its density will be

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12) 3 gm Mg reacts with 2 gm of Sulphur to form magnesium sulphide (MgS). Amount of Mg left. unreacted is

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13)

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14) The weight of NaOH required to react completely with 0.1 equivalent of H2SO4 is

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15) Count the number of significant figures in 0.053

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16) Conc. HCl contains 38% HCl by mass. The density of the solution is 1.19 g/ml. Calculate its Molarity.

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17) The molality of the solution containing 18.25g of HCl gas in 500g of water is

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18) The mass of N atom in 1 mole of K3[Fe(CN)6] is

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19) 1 g sample of chalk is completely neutralized by 100 ml 0.04N HCl solution. %(w/w) CaCO3 in the sample is

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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 AgNO3 is:

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21) 2.76 g silver carbonate on being strongly heated yields a residue weighing

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22) The volume of air required to completely burn 12g of carbon at STP would be (Air contains 21% oxygen by volume)

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23) The ratio of oxygen in FeO and Fe2O3 is (containing equal amount of iron)

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24) 2.3 g Na is completely burned to give Na2O, which is then dissolved in 1L. How much H2SO4 in gram is needed to neutralise the solution completely?

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25) The equivalent weight of Ca(OH)2 in this reaction is

(M = Formula mass of Ca(OH)2)

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26) The mole fraction of l2 in C6H2 is 0.2. Molality of l2 in C6H6 is

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27) 10g of CaCO3 is treated with 250 ml of @M HCl solution. Find the normality of HCl in resulting solution

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28) 100 ml of 10 M HCl is diluted to 2 M HCl. The volume of water added is

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29) The density of a  conc. H2SO4 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?

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30) 6.02 x 1020 molecules of sugar are present in 100 ml of its solution. The concentration of sugar solution is

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31) Number of significant figures in 142m, 0.141m and 0.0141 m will be respectively

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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

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33) 0.45g of dibasic acid is completely neutralized by 100 ml N/10 NaOH. The molecular weight of acid is?

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34) How many significant figures are present in 0.200g of substance?

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35) The molality(m) of the solution of ethanol in water, when the mole fraction of ethanol is 0.040.

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36) 200 ml decimolar H2SO4 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

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37) The amount of water obtained on burning 10 gm of H2 in 40 gm of O2 is

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38) If a 1L aq. solution of urea (d = 1.02 g/ml.) has conc. 3M, then the morality of the solution will be

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39) Number of g-atoms of oxygen present in 360g of glucose?

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40) 180g of glucose is added to 1000g of water, forming a solution of density 1.18g/ml. Molarity of glucose solution is?

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41) Mole Fraction of urea in its aqueous solution is 0.1. Calculate its morality.

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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?

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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

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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

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45) If 0.50 mole of BaCl2 is mixed with 0.20 mol of Na3PO4, the maximum number of mole Ba3(PO4)2 that can be formed is

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46) The amount of CO2 obtained at S.T.P. on burning 8g charcoal in 30 g O2 is

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47) A + 2B --> 2C

If 5 moles of A and 8 moles of B are reacted, then

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48) 100 ml of 0.01N oxalic acid (aq.) represents

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49) The molality of glucose solution in water is 10m. mole fraction glucose is

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50) Different proportions of oxygen in various oxides of nitrogen proves law of

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