Chemistry

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Q. Which of the following statements is true regarding the complex [Ag(NH3)2]+? (2023)
  • A. It is a tetrahedral complex.
  • B. It is a square planar complex.
  • C. It is a linear complex.
  • D. It is an octahedral complex.
Q. Which of the following statements is true regarding the complex [Cr(NH3)6]3+? (2023)
  • A. It is tetrahedral
  • B. It is octahedral
  • C. It is square planar
  • D. It has a coordination number of 4
Q. Which of the following statements is true regarding the equilibrium constant? (2020)
  • A. Kc is temperature dependent
  • B. Kc is pressure dependent
  • C. Kc is concentration dependent
  • D. Kc is independent of temperature
Q. Which of the following states of matter has the weakest intermolecular forces? (2023)
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Plasma
Q. Which of the following structures has the highest packing efficiency? (2019)
  • A. Simple cubic
  • B. Body-centered cubic
  • C. Face-centered cubic
  • D. Hexagonal close-packed
Q. Which of the following types of solids has the highest melting point? (2019)
  • A. Ionic solids
  • B. Covalent network solids
  • C. Molecular solids
  • D. Metallic solids
Q. Which phase change occurs at the boiling point of a substance? (2022)
  • A. Melting
  • B. Sublimation
  • C. Condensation
  • D. Vaporization
Q. Which polymer is commonly used in the production of fibers for clothing? (2020)
  • A. Polyethylene
  • B. Nylon
  • C. Polystyrene
  • D. Polyvinyl acetate
Q. Which polymer is commonly used in the production of non-stick cookware? (2023)
  • A. Polyethylene
  • B. Polytetrafluoroethylene (PTFE)
  • C. Polypropylene
  • D. Polyvinyl chloride (PVC)
Q. Which polymer is commonly used in the production of synthetic fibers? (2023)
  • A. Polyethylene
  • B. Nylon
  • C. Polystyrene
  • D. Polyvinyl acetate
Q. Which quantum number is not required to describe the electron in an atom? (2019)
  • A. Principal quantum number
  • B. Azimuthal quantum number
  • C. Magnetic quantum number
  • D. Color quantum number
Q. Which reaction is characteristic of carboxylic acids? (2021)
  • A. Esterification
  • B. Hydrogenation
  • C. Halogenation
  • D. Dehydration
Q. Which reaction is used to prepare carboxylic acids from alcohols? (2020)
  • A. Oxidation
  • B. Reduction
  • C. Hydrolysis
  • D. Dehydration
Q. Which reaction is used to prepare primary amines from alkyl halides? (2022)
  • A. Reduction
  • B. Hydrolysis
  • C. Nucleophilic substitution
  • D. Dehydrohalogenation
Q. Which reagent is used to convert an alcohol into an alkyl halide? (2022)
  • A. PCl5
  • B. NaBH4
  • C. LiAlH4
  • D. H2SO4
Q. Which reagent is used to convert an amine to an amide? (2023)
  • A. Acid chloride
  • B. Alcohol
  • C. Aldehyde
  • D. Ketone
Q. Which state of matter has the highest density under normal conditions? (2023)
  • A. Gas
  • B. Liquid
  • C. Solid
  • D. Plasma
Q. Which type of crystal system has the highest symmetry? (2022)
  • A. Cubic
  • B. Tetragonal
  • C. Orthorhombic
  • D. Monoclinic
Q. Which type of solid has a definite melting point and is composed of molecules held together by van der Waals forces? (2022)
  • A. Ionic solid
  • B. Metallic solid
  • C. Molecular solid
  • D. Covalent solid
Q. Which type of solid has a definite melting point and is usually hard and brittle? (2022)
  • A. Molecular solids
  • B. Ionic solids
  • C. Metallic solids
  • D. Amorphous solids
Q. Which type of solid has a definite melting point? (2022)
  • A. Amorphous solid
  • B. Crystalline solid
  • C. Polymeric solid
  • D. Metallic solid
Q. Which vitamin is a coenzyme in the metabolism of carbohydrates? (2019)
  • A. Vitamin A
  • B. Vitamin B1
  • C. Vitamin C
  • D. Vitamin D
Q. Which vitamin is essential for blood clotting? (2023)
  • A. Vitamin K
  • B. Vitamin E
  • C. Vitamin A
  • D. Vitamin D
Q. Which vitamin is known to be a coenzyme in carbohydrate metabolism? (2019)
  • A. Vitamin A
  • B. Vitamin B1
  • C. Vitamin C
  • D. Vitamin D
Q. Which vitamin is primarily involved in vision? (2020)
  • A. Vitamin A
  • B. Vitamin C
  • C. Vitamin D
  • D. Vitamin E
Q. Which vitamin is primarily obtained from citrus fruits? (2021)
  • A. Vitamin A
  • B. Vitamin B12
  • C. Vitamin C
  • D. Vitamin D
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