Major Competitive Exams

Q. What is the molecular geometry of the molecule with the electronic configuration of 1s2 2s2 2p2?
  • A. Linear
  • B. Trigonal Planar
  • C. Tetrahedral
  • D. Octahedral
Q. What is the molecular orbital configuration of F2?
  • A. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)⁴(π*2p)²
  • B. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)⁴
  • C. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(π2p)⁴(π*2p)²
  • D. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)³(π*2p)²
Q. What is the molecular orbital configuration of O2?
  • A. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)²(π*2p)¹
  • B. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)²(π*2p)²
  • C. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)³
  • D. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)²(π*2p)⁴
Q. What is the molecular orbital configuration of the F2 molecule?
  • A. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)⁴(π*2p)²
  • B. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)⁴(π*2p)⁴
  • C. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)⁴(π*2p)¹
  • D. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)³(π*2p)²
Q. What is the molecular orbital configuration of the O2 molecule?
  • A. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)²(π*2p)¹
  • B. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)²(π*2p)²
  • C. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)¹(π*2p)¹
  • D. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)¹(π*2p)²
Q. What is the molecular shape of a molecule with the formula AX3E?
  • A. Trigonal planar
  • B. Tetrahedral
  • C. Trigonal pyramidal
  • D. Bent
Q. What is the molecular shape of BF3 according to VSEPR theory?
  • A. Bent
  • B. Trigonal planar
  • C. Tetrahedral
  • D. Octahedral
Q. What is the molecular shape of NH3 according to VSEPR theory?
  • A. Linear
  • B. Trigonal planar
  • C. Tetrahedral
  • D. Trigonal pyramidal
Q. What is the molecular weight of water (H2O)?
  • A. 16 g/mol
  • B. 18 g/mol
  • C. 20 g/mol
  • D. 22 g/mol
Q. What is the moment of inertia of a disk of mass M and radius R about an axis through its center and perpendicular to its plane?
  • A. 1/2 MR^2
  • B. MR^2
  • C. 1/4 MR^2
  • D. 2/3 MR^2
Q. What is the moment of inertia of a solid cylinder of mass M and radius R about its central axis?
  • A. 1/2 MR^2
  • B. 1/3 MR^2
  • C. MR^2
  • D. 2/5 MR^2
Q. What is the moment of inertia of a solid disk about its central axis?
  • A. (1/2)MR^2
  • B. (1/3)MR^2
  • C. (1/4)MR^2
  • D. MR^2
Q. What is the moment of inertia of a solid sphere about an axis through its center?
  • A. (2/5)mr^2
  • B. (1/2)mr^2
  • C. (1/3)mr^2
  • D. (5/2)mr^2
Q. What is the moment of inertia of a solid sphere of mass M and radius R about an axis through its center?
  • A. 2/5 MR^2
  • B. 3/5 MR^2
  • C. 1/2 MR^2
  • D. MR^2
Q. What is the moment of inertia of a thin circular hoop of mass M and radius R about an axis through its center?
  • A. MR^2
  • B. 1/2 MR^2
  • C. 1/3 MR^2
  • D. 2/5 MR^2
Q. What is the moment of inertia of a thin circular plate of mass M and radius R about an axis through its center and perpendicular to its plane?
  • A. 1/2 MR^2
  • B. MR^2
  • C. 1/4 MR^2
  • D. 1/3 MR^2
Q. What is the moment of inertia of a thin circular ring of mass M and radius R about an axis through its center?
  • A. MR^2
  • B. 1/2 MR^2
  • C. 1/3 MR^2
  • D. 2/5 MR^2
Q. What is the moment of inertia of a thin circular ring of mass M and radius R about an axis perpendicular to its plane and passing through its center?
  • A. MR^2
  • B. 1/2 MR^2
  • C. 1/3 MR^2
  • D. 2/5 MR^2
Q. What is the moment of inertia of a thin circular ring of mass M and radius R about an axis perpendicular to its plane through its center?
  • A. MR^2
  • B. 1/2 MR^2
  • C. 1/3 MR^2
  • D. 2/5 MR^2
Q. What is the moment of inertia of a thin circular ring of mass M and radius R about an axis through its center and perpendicular to its plane?
  • A. MR^2
  • B. 1/2 MR^2
  • C. 2/3 MR^2
  • D. 1/3 MR^2
Q. What is the moment of inertia of a thin rod of length L about an axis perpendicular to it and passing through its center?
  • A. (1/3)ML^2
  • B. (1/12)ML^2
  • C. (1/2)ML^2
  • D. ML^2
Q. What is the moment of inertia of a thin rod of length L about an axis perpendicular to it and passing through one end?
  • A. (1/3)ML^2
  • B. (1/12)ML^2
  • C. ML^2
  • D. (1/2)ML^2
Q. What is the moment of inertia of a thin spherical shell of mass M and radius R about an axis through its center?
  • A. 2/3 MR^2
  • B. 1/2 MR^2
  • C. MR^2
  • D. 2 MR^2
Q. What is the moment of inertia of a thin wire bent in the shape of a semicircle of radius R and mass M about the diameter?
  • A. 1/2 MR^2
  • B. 1/4 MR^2
  • C. MR^2
  • D. 3/8 MR^2
Q. What is the moment of inertia of a uniform rectangular plate of mass M and dimensions a x b about an axis through its center and parallel to side a?
  • A. 1/12 Ma^2
  • B. 1/12 Mb^2
  • C. 1/3 Ma^2
  • D. 1/3 Mb^2
Q. What is the moment of inertia of a uniform thin circular plate of mass M and radius R about an axis through its center and perpendicular to its plane?
  • A. 1/2 MR^2
  • B. MR^2
  • C. 1/4 MR^2
  • D. 2/5 MR^2
Q. What is the moment of inertia of a uniform thin square plate of mass M and side length a about an axis through its center and parallel to one of its sides?
  • A. 1/6 Ma²
  • B. 1/12 Ma²
  • C. 1/4 Ma²
  • D. 1/3 Ma²
Q. What is the moment of inertia of a uniform triangular lamina of mass M and base b about an axis perpendicular to the base and passing through its centroid?
  • A. 1/18 Mb^2
  • B. 1/12 Mb^2
  • C. 1/6 Mb^2
  • D. 1/24 Mb^2
Q. What is the momentum of a 3 kg object moving at a velocity of 4 m/s? (2017)
  • A. 12 kg·m/s
  • B. 7 kg·m/s
  • C. 15 kg·m/s
  • D. 10 kg·m/s
Q. What is the monomer of nucleic acids? (2023)
  • A. Amino acid
  • B. Nucleotide
  • C. Monosaccharide
  • D. Fatty acid
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