My Profile
Active Members
TodayLast 7 Days
more...
Awards & Gifts
Online Exams
Fresher Jobs
Our fresher job section is exclusively for fresh graduates! Find jobs for freshers in major Indian
cities including Bangalore, Chennai, Hyderabad, Pune or Kochi
Resources
Find educational articles, blogs, discussion threads and other resources.
Colleges
Find details about any college in India or search for courses.
|
Download Model question papers & previous years question papers
|
Posted By: sac Member Level: Diamond Posted Date: 27 Mar 2008
|
2007 Engineering / Medical Entrance Test - Chemistry Question paper
|
|
|
1. The maximum number of electrons in a subshell is given by
a) 4l-2 b) 4l+2 c) 2l+1 d) 2n2
2. Neutrons are discovered by
a) Rutherford b) Langmeir c) Chadwick d) Austen
3. In a hydrogen atom, if the energy of an electron in the ground state is 13.6 eV, then that in the 2nd excited state is
a) 1.51 eV b) 3.4 eV c) 6.04 eV d) 13.6 eV
4. Which of the following ions has the maximum magnetic moment
a) Mn2+ b) Fe2+ c) Ti2+ d) Cr2+
5. The highest number of unpaired electrons are present in
a) Fe b) Fe4+ c) Fe2+ d) Fe3+
6. The energy of a photon is given as ?E / atom = 3.03×10-19,Jatom-1,then the wave length of the photon is
a) 65.6nm b) 656nm c) 0.656nm d) 6.56nm
7. The first emission line in the spectrum of hydrogen in the Balmer series appears at
a) 9R400cm-1 b) 7R144cm-1 c) 3R4cm-1 d) 5R36cm-1
8. If the radius of the first Bohr orbit be a0, then the radius of third Bohr orbit would be
a) 3a0 b) ba0 c) 9a0 d) 19a0
9. The configuration 1s22s22p53s1shows
a) ground state flourine b) excited state of flourine c) excited state of neon atom d) excited state of O2-
10. The total number of orbitals in a shell with principal quantum number 'n' is
a) 2n b) 2n2 c) n2 d) n+1
11. If uncertainity in the position of an electron is zero, the uncertainity in its momentum would be
a) Zero b) =h4? c)
12. The energy of hydrogen atom in it's ground state is -13.6eV. The energy of the level corresponding to the quantum number n=5 is
a) -0.54 eV b) -5.4 eV c) -0.85 eV d) -2.72 eV
13. The number of sperical nodes in 3p orbitals are
a) 1 b) 3 c) 0 d) 2
14. "The exact path of electron 2p orbital cannot be determined". The above statement is based upon
a) Hund's Rule b) Bohr's Rule c) Uncertainity Principle d) Aufbau Principle
15. NaCl imparts a yellow colour to the Bunsen flame. This can be due to
a) low ionisation energy of sodim b) Sublimation of metalic sodium to give yellow colour c) Emission of excess energy absorbed as a radiation in the visible region d) Photo sensitivity of Sodim
16. The spectrum of He+is similar to that of
a) Hydrogen b) Li+ c) Na d) He
17. The quantum number for the outer electron of an atom is are given by n=2, l=0, m=0, s =+12
a) Lithium b) Helium c) Hydrogen d) Boron
18. The number of elctrons in the M shell of the element with Z=24 is
a) 24 b) 12 c) 13 d) 8
19. The magnatic quantum number represents
a) Size of the Orbital b) Spin angular momentum c) Orbital angular momentum d) Spatial orientation of Orbital
20. With increasing principle quantum number, the energy difference between adjascent energy levels in H atom
a) decreases b) increases c) remains constant d) decreases for low value of Z and increases for higher value of Z
21. Among the following pairs, the one which illustrates the law of multiple proportions is
a) NH3,HCl b) H2S,SO2 c) CuO,Cu2O d) FeCl2,FeSO4
22. Vapour density of a gas is 22. What is its molecular mass
a) 33 b) 22 c) 44 d) 11
23. An organic compound contains 49.3% Carbon, 6.84% hydrogen, and its vapour density is 73. Molecular formula of compound is
a) C3H5O2 b) C6H10O4 c) C3H10O2 d) C4H10O2
24. The volume in litres of CO2liberated at STP when 10g of 90% pure limestone heated completely is
a) 22.4 b) 2.24 c) 20.16 d) 2.016
25. The maximum amount of BaSO4precipitated on mixing BaCl2(0.5M) with H2SO4(1M) will correspond to
a) 0.5M b) 1M c) 1.5M d) 2M
26. 4.4g of an unknown gas occupies a volume of 2.24L of volume of STP. The gas may be
a) CO2 b) CO c) O2 d) SO2
27. The number of atoms in 4.25g of NH3is
a) 1×1023 b) 1.5×1023 c) 2×1023 d) 6×1023
28. If NA is Avogadro's number, then number of valance electrons in 4.2g of nitride ion, N3-is
a) 2.4 NA b) 4.2 NA c) 1.6 NA d) 3.2 NA
29. The number of molecules in 8.96 L of a gas at 00C and 1 atm pressure is
a) 6.02×1023 b) 12.04×1023 c) 18.06×1023 d) 24.08×1023
30. 2g of Oxygen contains number of atoms equal to that in
a) 0.5g of Hydrogen b) 4g of Sulphur c) 7g of Nitrogen d) 2.3g of Sodium
31. The number of moles of Sodium Oxide in 620g of it is
a) 1 mole b) 10 moles c) 18 moles d) 100 moles
32. The number of Oxygen atoms in 4.4g of CO2is
a) 1.2×1023 b) 6×1022 c) 6×1023 d) 12×1023
33. The number atoms contained in 11.2Lof SO2at STP
a) 32×6.02×1023 b) 2×6.02×1023 c) 6.02×1023 d) 4×6.02×1023
34. Which of the following has the smallest number of molecules?
a) 0.1 mole of CO2 b) 11.2L of CO2at NTP c) 22g of CO2 d) 22.4×103ml of CO2
35. 12g of Mg (at mass 24) on reacting completely with acid gives H2 , the volume of which at STP would be
a) 22.4 L b) 11.2 L c) 44.8 L d) 6.1 L
36. Which of the following has least mass?
a) 2 g-atom of Nitrogen b) 3×1023atoms of C c) 1 mole of S d) 7 g of Ag
37. 1 mole of CH4 contains
a) 6.02×1023atoms of H b) 4 g-atom of Hydrogen c) 1.81×1023molecules of CH4 d) 3g of Carbon
Return to question paper search
|
|
|
Submit Previous Years University Question Papers and make money from adsense revenue sharing program
Are you preparing for a university examination? Download model question papers
and practise before you write the exam.
|
Watch TV Channels
Watch Asianet TV onlineKairali TV in InternetSurya TV onlineAmritha TV Channel
|