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1) The unit of the rate constant (k) is same as that of rate of reaction________________? a. First order reaction b. Second order reaction c. Zero order reaction d. Third order reaction
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2) Acid present in acid rain may be_________________? a. H2SO4 b. HNO3 c. both A and B d. none of the above
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3) Which of the following elements conduct electricity and also melts below 100°C ? a. Aluminium b. Sodium c. Carbon d. Sulphur
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4) The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________________? a. Ethylene iodide b. Ethylene bromide c. Ethylene chloride d. Ethylene fluoride
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5) Isotopes differs in______________________? a. arrangement of electrons in orbitals b. position in the periodic table c. properties depend upon mass d. chemical properties
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6) The volume occupied by 1.4g CO at S.T.P is___________________? a. 22.4 dm³ b. 2.24 dm³ c. 1.12 cm³ d. 1.12 dm³
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7) Which of the following set has all species isoelectronic__________________? a. F – Cl – Br b. Li+1 – Na+1 – K+1 c. F – Ne – Na+ d. H+ – H- – H
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8) Water absorber used in combustion analysis is___________________? a. 50% KOH b. Lime water c. CaCl2 d. Mg (CIO4)2
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9) The type of filtering media used for filtration depending upon____________________? a. Nature of reactants b. Nature of crucible c. Nature of product d. Nature of precipitate
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10) A method of separation of components from its solution using Distribution law is ___________________? a. Sublimation b. Crystallisation c. Solvent extraction d. Distillation
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11) Equal masses of methane and oxygen are mixed in empty container at 250?(C) The fraction of total pressure exerted by oxygen is___________________? a. one / seventeen b. sixteen / seventeen c. one / three d. two / three
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12) The molecules of CO2 in dry ice form__________________? a. Ionic crystal b. Covalent crystal c. Molecular crystal d. Any type of crystal
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13) Only London dispersion forces are present among the_________________? a. Molecules of water in liquid state b. Atoms of helium in gaseous state at high temperature c. Molecules of hydrogen chloride gas d. Molecules of solid iodine
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14) Quantum number values for 3p orbitals are____________________? a. n=3 l=2 b. n=3 l=0 c. n=3 l=1 d. n=3 l=3
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15) Which specie has unpaired electrons in antibonding molecular orbitals_______________? a. O2+2 b. N2-2 c. B2 d. O2-2
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16) For a given process the heat changes at constant pressure (qp) and at constant volume (qv) are related to each other as___________________? a. qp = qv b. qp < qv c. qp > qv d. qp = qv / 2
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17) Solubility product of AgCl is 2.0 x 10-10 mol2 dm-6. Maximum Concentration of Ag+1 ions in the solution is__________________? a. 2.0 x 10-10 mol dm-3 b. 1.414 x 10-5 mol dm-3 c. 1.0 x 10-10 mol dm-3 d. 1.0 x 10-5 mol dm-3
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18) Which of the following solution has the highest boiling point ? a. 5.85% NaCl Solution b. 18.0 % glucose solution c. 6.0 % urea solution d. All have same boiling point
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19) Which of the following can be used in laptops ? a. Silver oxide battery b. Fuel cell c. Nickel cadmium cell d. Lead accumulator
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20) Which is the unit of (K) rate constant for zero order reaction ? a. s-1 b. mol dm-3 s-1 c. mol-1 dm3 s-1 d. mol-2 dm6 s-1
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21) Which is carnalite________________? a. KCI b. NaCI c. KCI MgCl2 6H2O d. Na2CO3. 10H2O
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22) Which one does not give borax bead test_________________? a. Copper sulphate b. Barium sulphate c. Cobalt sulphate d. Nickel sulphate
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23) The most reactive allotropic form of phosphorus is________________? a. White b. Redox potential c. Black d. Violet
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24) Which molecule has the highest bond energy among the halogens_________________? a. Fluorine b. Chlorine c. Iodine d. Bromine
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25) The most paramagnetic element is____________________? a. Iron b. Cobalt c. Chromium d. Manganese
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26) Which one of the following looks odd__________________? a. H2SO4 b. KMnO4 c. H2S d. K2CrO4
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27) In 1 – pentene -4- yne the carbon exhibit hybridization_________________? a. sp3 – sp2 b. sp2 – sp c. sp2 – sp d. sp3 – sp2 – sp
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28) When benzene is heated in air with V2O5 at 450°C yields_________________? a. Phenol b. Maleic anhydride c. Glyoxal d. Benzoic acid
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29) Which one of the following will be sulphonated readily ? a. Chlorobenzene b. Toluene c. Nitrobenzene d. Benzene
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30) When CO2 is made to react with ethy1 magnesium iodide in dry ether followed by acid hydrolysis yields______________? a. Carboxylic acid b. Ethanoic acid c. Propanoic acid d. Butanoic acid
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31) Ethy1 chloride on reduction in the presence of Zn/HCI produces___________________? a. n. butane b. Ethanol c. Ethane d. Diethy1 ether
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32) For industrial preparation of CH3CHO catalytic promoter is_________________? a. PdCl2 b. Cu2Cl2 c. CuCl2 d. PbCl2
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33) Which of the following is not a fatty acid ? a. Propanoic acid b. Acetic acid c. Phthalic acid d. Butanoic acid
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34) Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ? a. Urea b. Calcium superphosphate c. Diammonium phosphate d. Potassium nitrate
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35) Chlorination of water may be harmful if the water contains_________________? a. Ammonia b. Dissolved oxygen c. Carbon dioxide d. All
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36) The mass of one mole of electron is________________? a. 1.008 b. 0.55 c. 0.184 d. 1.637
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37) The number of atoms in a molecule determines________________? a. macromolecule b. macromolecule c. molecularity d. atomicity
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38) Which element has same isotopes like palladium___________________? a. Nickel b. Calcium c. Cadmium d. Tin
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39) A limiting reactant is one which________________? a. is taken in lesser quantity in grams as compared to other reactants b. is taken in lesser quantity in volume as compared to other reactants c. gives the maximum amount of the product which is required d. gives the minimum amount of the product under consideration
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40) A safe and more reliable method for drying the crystal is__________________? a. Hot air currents b. folds of filter paper c. oven d. Vacuum desiccator
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41) A real gas obeying vander waals equation will resemble the ideal gas if_______________________? a. Both a and b are small b. Both a and b are large c. a is small and b is large d. a is large and b is small
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42) Plasma is used in_________________? a. Fluorescent bulb b. Neon signs c. Lasers d. All of these
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43) Which of the following is pseudo solid_____________________? a. CaF2 b. NaCl c. Glass d. Diamond
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44) Bohrs model is contradicted by__________________? a. Plancks theory b. Dual nature of matter c. Heisenbergs uncertainty principle d. All of these
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45) Atomic radius can be determined by_________________? a. X – ray diffraction b. Spectrophotometer c. Optical microscope d. Electron microscope
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46) For which system does the equilibrium constant Kc has unit of (concentration)-1__________________? a. N2+3H2 2NH3 b. H2+I2 2HI c. 2NO2 N2H4 d. PCI5 PCI3+CI2
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47) 18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ___________________? a. 8 b. 5.1 c. 6 d. one/fifty one
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48) Stronger is the oxidizing agent greater is the___________________? a. Oxidation potential b. Redox potential c. e.m.f of cell d. standard reduction potential
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49) Which is true about Zn-Cu galvanic cell ? a. Reduction occurs at anode b. K+ ion transfer from salt bridge to left beaker of ZnSO4 c. Oxidation occurs at cathode d. Anode is negatively charged
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50) Nitrates of which pair gives different products on thermal decomposition___________________? a. Na K b. Mg Ca c. Li Na d. Li Ca
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