paper no.5 chemistry

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MDCAT Chemistry Paper 5

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1.During contact process of H2SO4 synthesis, the following reaction occurs: 

2SO2+O2(g) 2SO3(g) H = -196 kJ mol-1

Which step is used to increase the yield of SO3

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2.Synthesis of ammonia by Haber's process is a reversible reaction. What should be done to increase the yield of ammonia in the following reaction?

N2(g) + 3H2(g) ⇌ 2NH3(g)

H = -92 kJ

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3.Which one of the following pairs can be cis-trans isomer to each other?

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4.The average bond energy of C-Br is: 

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5.Which one of the following is an appropriate indication of positive iodoform test?

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6.

     O

     ||

H-C-H

Which one of the following is the IUPAC name of above given structure?

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7.Which one of the following tests is given by both aldehyde and ketone? 

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8. CH3COOH + CH3CH2OH CH3COOC2H5 + H2O

Which one of the following will act as a catalyst in above reaction?

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9. CH3COOH + PCl5 ?

Which one of the following options shows the products of above reaction?

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10.Which one of the following reactions of carboxylic acid is reversible?

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11. When acid is added to an amino acid, which one of. the following will act as a base?

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12.Determine the number of moles of O2 in 10.6g NaCO3:

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13.Calculate the grams of H2O formed when 8g of CH4 burns in excess of oxygen:

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14.Choose the correct option regarding number of particles associated with one mole of substance:

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15.A compound has an empirical formula CH2Cl and molecular formula mass as 99 g mol-¹, identify the compound:

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16.Identify the value of R at STP: 

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17.In the equation

(P+n^2 a/v^2) (V – nb) = nRT, 'b'

represents the:

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18.What is the reason that ice at 0°C occupies more volume than water?

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19.Pi-bond is formed by sideways overlap of:

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20.What is the exact value of angle in BF3:

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21.Determine the value of Enthalpy of formation of NHẠC:

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22.Enthalpy is measured at:

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23.During space flights, astronauts obtained water from:

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24.For the purification of copper, impure copper is made the:

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25.Ca(OH)2 is sparingly soluble having solubility value 6.5 x 10^-6. What'll be its solubility: 

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26.Unit of k in first order reaction is: 

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27. Rate of first order reaction depends on: 

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28.Among the following, which contains same number of electrons and protons but different number of neutrons:

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29. Melting point of Na and Mg decreases down the group due to: 

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30.Ionic radius decreases along the period due to:

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