Chemistry (School & UG)

Q. What is the value of the ideal gas constant R in L·atm/(K·mol)?
  • A. 0.0821
  • B. 8.314
  • C. 62.36
  • D. 0.08314
Q. What is the van 't Hoff equation used for?
  • A. To relate temperature and equilibrium constant
  • B. To calculate reaction rates
  • C. To determine solubility
  • D. To find enthalpy changes
Q. What is the van 't Hoff factor (i) for NaCl in solution?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the van der Waals equation used for?
  • A. Describing ideal gas behavior
  • B. Describing real gas behavior
  • C. Calculating enthalpy changes
  • D. Calculating reaction rates
Q. What is the wavelength of an electron moving with a velocity of 1 x 10^6 m/s? (h = 6.626 x 10^-34 J·s)
  • A. 6.63 x 10^-28 m
  • B. 6.63 x 10^-34 m
  • C. 6.63 x 10^-22 m
  • D. 6.63 x 10^-30 m
Q. What is the wavelength range of UV-Vis spectroscopy?
  • A. 100-400 nm
  • B. 400-700 nm
  • C. 700-1000 nm
  • D. 1000-2000 nm
Q. What trend is observed in atomic radius across a period in the periodic table?
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Varies randomly
Q. What trend is observed in atomic radius as you move down a group in the periodic table?
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Varies unpredictably
Q. What type of biomolecule is an enzyme?
  • A. Carbohydrate
  • B. Lipid
  • C. Protein
  • D. Nucleic acid
Q. What type of bond connects nucleotides in a DNA strand?
  • A. Hydrogen bonds
  • B. Ionic bonds
  • C. Covalent bonds
  • D. Van der Waals forces
Q. What type of bond is formed between hydrogen and chlorine in HCl?
  • A. Ionic bond
  • B. Covalent bond
  • C. Metallic bond
  • D. Hydrogen bond
Q. What type of bond is formed between hydrogen and chlorine in hydrogen chloride (HCl)?
  • A. Ionic
  • B. Covalent
  • C. Metallic
  • D. Hydrogen
Q. What type of bond is formed between hydrogen and oxygen in water?
  • A. Ionic bond
  • B. Covalent bond
  • C. Metallic bond
  • D. Hydrogen bond
Q. What type of bond is formed between Na and Cl in NaCl?
  • A. Covalent
  • B. Ionic
  • C. Metallic
  • D. Hydrogen
Q. What type of bond is formed between sodium and chlorine in sodium chloride?
  • A. Covalent
  • B. Ionic
  • C. Metallic
  • D. Hydrogen
Q. What type of bond is primarily detected in the fingerprint region of an IR spectrum?
  • A. C-H bonds
  • B. O-H bonds
  • C. C-C bonds
  • D. Complex vibrations of multiple bonds
Q. What type of bond is primarily formed between a transition metal and a ligand in coordination complexes?
  • A. Ionic bond
  • B. Covalent bond
  • C. Metallic bond
  • D. Coordinate covalent bond
Q. What type of bond is primarily formed between hydrogen and oxygen in water?
  • A. Ionic bond
  • B. Covalent bond
  • C. Metallic bond
  • D. Hydrogen bond
Q. What type of bond is primarily formed between sodium and chlorine in sodium chloride?
  • A. Covalent bond
  • B. Ionic bond
  • C. Metallic bond
  • D. Hydrogen bond
Q. What type of bond is primarily formed in coordination compounds?
  • A. Ionic bond
  • B. Covalent bond
  • C. Metallic bond
  • D. Coordinate covalent bond
Q. What type of complex is formed when a metal ion is surrounded by four ligands in a square planar arrangement?
  • A. Tetrahedral complex
  • B. Octahedral complex
  • C. Square planar complex
  • D. Linear complex
Q. What type of detector is commonly used in mass spectrometry?
  • A. UV detector
  • B. Fluorescence detector
  • C. Ion detector
  • D. Conductivity detector
Q. What type of detector is commonly used in UV-Vis spectroscopy?
  • A. Photomultiplier tube
  • B. Thermal conductivity detector
  • C. Mass spectrometer
  • D. Fluorescence detector
Q. What type of geometry is typically associated with a coordination number of 6?
  • A. Tetrahedral
  • B. Square planar
  • C. Octahedral
  • D. Linear
Q. What type of hybridization is present in methane (CH4)?
  • A. sp
  • B. sp2
  • C. sp3
  • D. sp3d
Q. What type of hybridization is present in the nitrogen atom of NH3?
  • A. sp
  • B. sp2
  • C. sp3
  • D. sp3d
Q. What type of information can be obtained from a UV-Vis spectrum?
  • A. Molecular structure
  • B. Concentration of ions
  • C. Presence of functional groups
  • D. All of the above
Q. What type of information can be obtained from the fingerprint region of an IR spectrum?
  • A. Functional group identification
  • B. Molecular weight determination
  • C. Unique molecular structure
  • D. Concentration analysis
Q. What type of information can be obtained from the IR spectrum of a compound?
  • A. Molecular weight
  • B. Functional groups present
  • C. Concentration of the compound
  • D. Thermal stability
Q. What type of intermolecular force is primarily responsible for the high boiling point of water?
  • A. London dispersion forces
  • B. Dipole-dipole interactions
  • C. Hydrogen bonding
  • D. Ionic interactions
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