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1. |
The number of moles of solute present in 1000 ml of the water and aqueous solution are respectively called
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a. Morarity & Morality
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b. Morality & Molarity
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d. Normality & Molality
|
 : B |
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2. |
Boltzmann constant with respect to gas constant is
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a. Gas constant for 100 molecules
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b. Gas constant for 10 mole of gas
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d. Gas constant for 1 molecule only
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| : D |
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3. |
When Fe(OH)3 sol is added to As2S3
sol, then
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a. a new solution is formed
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b. an emulsion is formed
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d. flocculation takes place
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| : D |
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4. |
The number of significant digits in 0.00002 and 20,000 respectively are
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a. 1 and 5
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b. 1 and 1
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d. 6 and 5
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| : A |
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5. |
In fluorite structure, the arrangement of spheres is
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a. acc
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b. hcc
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d. ccp
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| : D |
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6. |
1 mole of hydrated CuSO4 contains
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a. 90 moles of water
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b. 90 atoms of water
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d. 9 g of oxygen
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| : C |
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7. |
During the extraction of Fe, slag obtained is
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a. FeO
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b. FeSiO3
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d. CaSiO3
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| : D |
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8. |
Acetaminophen is a
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a. analgesics
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b. disinfectant
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d. none of these
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| : C |
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9. |
Joule - Thomson effect is zero in the case of
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a. Real gas
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b. Permanent gas
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d. Non ideal gas
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| : C |
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10. |
The enthalpies of elements in their standard states are taken as zero. Hence the enthalpy of formation of a compound
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a. should always be negative
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b. should always be positive
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d. may be positive or negative
|
| : D |
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11. |
To a mixture of acetic acid and sodium acetate a further amount of sodium acetate is added. The pH of the mixture:
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a. increases
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b. decreases
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d. not predictable
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| : A |
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12. |
The product of atomic weight and specific heat for solid elements in k cal / mol is
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a. 6.4
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b. 5
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d. 5.6
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| : A |
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13. |
Water is a mixture of
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a. CO and H2
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b. CO2 and H2O
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d. CO, H2 and N2
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| : A |
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14. |
Phorone is obtained by the condensation of
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a. 2 molecules of CH3-CHO
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b. 2 molecules of CH3-CO-CH3
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d. 3 molecules of
CH3-CO-CH3
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| : D |
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15. |
The value of Van der Waals constant 'a' is the largest for
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a. O2
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b. NH3
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d. N2
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| : B |
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16. |
Proton is
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a. Alpha particle
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b. Ionized hydrogen atom
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d. Ionized hydrogen molecule
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| : B |
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17. |
In square close packing the central sphere is in contact with ----- spheres in one layer
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a. 6
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b. 12
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d. 4
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| : D |
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18. |
The pH of an aqueous solution of CH3COONa will be
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a. 3
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b. 7
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d. 14
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| : C |
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19. |
GUN cotton contains
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a. glucose
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b. pyrolyxin
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d. cellulose trinitrate
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| : D |
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20. |
The total energy of the electron in hydrogen atom is
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a. Less than zero
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b. Equal to zero
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d. Greater than zero
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| : A |
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21. |
For a reaction in equilibrium
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a. there is no volume change
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b. the reaction has stopped completely
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d. the forward reaction is faster than the reverse reaction
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| : C |
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22. |
In the metallurgy of iron, limestone is added to blast furnace, the calcium on ends up in:
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a. slag
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b. gange
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d. calcium oxide
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| : A |
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23. |
When conc. HNO3 is heated with P2O5,
it forms
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a. N2O
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b. NO
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d. N2O5
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| : D |
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24. |
The first ionization potential will be maximum for
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a. lithium
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b. hydrogen
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d. iron
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| : B |
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25. |
LEUCO compound havig highest Pkb value among
the following is
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a. (CH3)3N
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b. (CH3)2NH
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d. NH3
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| : D |
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26. |
The rate of reaction is doubled for every 100
rise in temperature. The increase in reaction rate as a result of temperature
rise from 100 to 1000 is:
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a. 112
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b. 512
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d. 614
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| : B |
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27. |
The shape of XeF2 molecule is
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a. tetrahedral
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b. pyramidal
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d. linear
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| : D |
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28. |
The number of ions formed when cupramonium sulphate dissolved in water is
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a. one
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b. two
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d. zero
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| : B |
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29. |
TiCl4 is readily hydrolyzed into
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a. TiO2
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b. Ti2O3
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d. [Ti(OH2)]
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| : A |
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30. |
The unit of specific conductivity is
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a. ohms cm-1
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b. ohms cm-2
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d. ohms-1 cm-1
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| : D |
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31. |
Heavy water is
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a. water containing sulphates of Ca and Mg
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b. water containing heavy ions
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d. D2O
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| : D |
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32. |
The work done in
changing one mole of water at 1000C
to steam at 1000C and one atmospheric pressure is given by
|
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a. 310 J
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b. 31 J
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d. 3100 J
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| : D |
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33. |
Potassium crystallizes in a body centered lattice. Hence the coordination number of potassium in potassium metal:
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a. zero
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b. 8
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d. 4
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| : B |
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34. |
Electron transfer chain reactions are observed in
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a. cellular respiration
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b. glycolysis
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d. all the above
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| : A |
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35. |
HVZ reaction is not given by
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a. HCOOH
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b. C6H5COOH
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d. all the above
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| : D |
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36. |
Michalis Menten mechanism is related with
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a. thermodynamics of irreversible systems
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b. fugacity
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d. kinetic analysis of enzyme catalyzed reactions
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| : D |
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37. |
The ionizing power of β-particle
is ......... times more than that of
α-particles
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a. 10+2
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b. 10-1
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d. 10-4
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| : C |
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38. |
Iron is rendered passive when treated with:
|
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a. H2SO4
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b. HCl
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d. HNO3
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| : D |
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39. |
The appropriate current in amp/sec necessary to produce O2
gas at the rate of 10-3 litre per second is
|
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a. 1.723
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b. 0.1723
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d. 172.3
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| : C |
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40. |
White phosphorous contains
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a. P2 molecules
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b. P6 molecules
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d. P8 molecules
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| : C |
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41. |
Out of the following the most acidic is
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a. As2O3
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b. P2O3
|
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d. Bi2O3
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| : B |
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42. |
Two electrons in an orbital are distinguished by
|
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a. Spin quantum number
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b. Subsidiary quantum number
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d. Principle quantum number
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| : A |
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43. |
The number of gram atoms present in 22.4 g helium is
|
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a. 2
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b. 2.1
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d. 11.2
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| : C |
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44. |
Which of the following is a heterogeneous mixture?
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a. Sand and Sugar
|
b. Smoke
|
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d. All the above
|
| : D |
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45. |
A chemical system is in equilibrium. Addition of a catalyst would result in
|
| |
a. increase in the rate of forward reaction
|
b. increase in the rate of reverse reaction
|
| |
d. increase the amount of heat evolved in the reaction
|
| : C |
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46. |
The shape of NH3 molecule is
|
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a. tetrahedral
|
b. pyramidal
|
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d. linear
|
| : B |
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47. |
Change in the internal energy of one mole of Argon during isothermal expansion is
|
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a. 100 cals
|
b. 140 cals
|
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d. zero
|
| : D |
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48. |
Isotonic solutions have same
|
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a. Vapour pressure
|
b. Molality
|
| |
d. Mole fraction
|
| : C |
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49. |
The hydrolysis of
methyl formate in acid solutions has
rate expression rate = k[HCOOCH3][H+], the balanced
equation being HCOOCH3 + H2O ¾¾¾¾®
HCOOH + CH3OH The rate law contains [H+] through the
balanced equation does not contain [H+] because:
|
| |
a. more for convenience to express the rate law
|
b. H+
ion is a catalyst
|
| |
d. all acids contain H+ ions
|
| : B |
| |
50. |
Magnetic quantum number designates
|
| |
a. Size of orbitals
|
b. Spatial orientation of orbitals
|
| |
d. Orbital angular momentum
|
| : B |
