Chemistry

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Q. Which of the following ligands is a strong field ligand? (2021) 2021
  • A. I-
  • B. Br-
  • C. CN-
  • D. Cl-
Q. Which of the following methods is used to purify colloidal solutions? (2020)
  • A. Filtration
  • B. Centrifugation
  • C. Dialysis
  • D. Evaporation
Q. Which of the following methods is used to stabilize colloidal solutions? (2023)
  • A. Electrolysis
  • B. Coagulation
  • C. Dialysis
  • D. Electrophoresis
Q. Which of the following molecules has a polar covalent bond? (2023)
  • A. Cl2
  • B. H2O
  • C. CH4
  • D. O2
Q. Which of the following molecules has a polar covalent bond? (2023) 2023
  • A. Cl2
  • B. H2O
  • C. CH4
  • D. O2
Q. Which of the following pairs are both f-block elements?
  • A. Uranium and Thorium
  • B. Lanthanum and Cerium
  • C. Neodymium and Plutonium
  • D. Zirconium and Hafnium
Q. Which of the following pairs are f-block elements? (2023)
  • A. Zinc and Cadmium
  • B. Lanthanum and Cerium
  • C. Iron and Cobalt
  • D. Copper and Silver
Q. Which of the following particles has the least mass? (2020) 2020
  • A. Proton
  • B. Neutron
  • C. Electron
  • D. Alpha particle
Q. Which of the following particles has the least mass? (2021) 2021
  • A. Proton
  • B. Neutron
  • C. Electron
  • D. Alpha particle
Q. Which of the following processes involves a change from gas to liquid?
  • A. Sublimation
  • B. Condensation
  • C. Evaporation
  • D. Freezing
Q. Which of the following processes is irreversible? (2022)
  • A. Isothermal expansion
  • B. Adiabatic expansion
  • C. Free expansion
  • D. Isobaric process
Q. Which of the following processes is isochoric? (2023)
  • A. Constant volume
  • B. Constant pressure
  • C. Constant temperature
  • D. Adiabatic
Q. Which of the following quantum numbers describes the shape of an orbital? (2020) 2020
  • A. Principal quantum number
  • B. Azimuthal quantum number
  • C. Magnetic quantum number
  • D. Spin quantum number
Q. Which of the following reactions involves a redox process? (2019)
  • A. H2 + Cl2 → 2HCl
  • B. NaCl → Na + Cl2
  • C. CaCO3 → CaO + CO2
  • D. H2O → H2 + O2
Q. Which of the following reactions is a reduction? (2020)
  • A. Fe2O3 + 3CO → 2Fe + 3CO2
  • B. 2H2 + O2 → 2H2O
  • C. 2Na + Cl2 → 2NaCl
  • D. C + O2 → CO2
Q. Which of the following solutions has the highest freezing point? (2020)
  • A. 0.1 M NaCl
  • B. 0.1 M KCl
  • C. 0.1 M glucose
  • D. 0.1 M CaCl2
Q. Which of the following species acts as a reducing agent in the reaction 2Fe2O3 + 3C → 4Fe + 3CO? (2022)
  • A. Fe2O3
  • B. C
  • C. Fe
  • D. CO
Q. Which of the following species acts as a reducing agent in the reaction 2Fe2O3 + 3C → 4Fe + 3CO2? (2020)
  • A. Fe2O3
  • B. C
  • C. Fe
  • D. CO2
Q. Which of the following statements about carboxylic acids is incorrect? (2020)
  • A. They can form hydrogen bonds.
  • B. They have higher boiling points than alcohols.
  • C. They are less acidic than alcohols.
  • D. They can be converted to esters.
Q. Which of the following statements about coordination compounds is incorrect? (2023)
  • A. They can exhibit geometric isomerism.
  • B. They can exhibit optical isomerism.
  • C. All coordination compounds are colored.
  • D. They can form complexes with transition metals.
Q. Which of the following statements is true about adsorption? (2023)
  • A. It is a bulk phenomenon
  • B. It is a surface phenomenon
  • C. It occurs only in gases
  • D. It is always exothermic
Q. Which of the following statements is true about coordination compounds? (2021) 2021
  • A. They are always ionic
  • B. They can exhibit optical isomerism
  • C. They have fixed oxidation states
  • D. They cannot form complexes
Q. Which of the following statements is true about galvanic cells? (2020)
  • A. They convert chemical energy to electrical energy
  • B. They require an external power source
  • C. They operate only in acidic solutions
  • D. They are always non-spontaneous
Q. Which of the following statements is true for an adiabatic process? (2022) 2022
  • A. Heat is exchanged with the surroundings
  • B. Work done is zero
  • C. Temperature changes
  • D. Pressure remains constant
Q. Which of the following statements is true for an isochoric process? (2023)
  • A. Volume remains constant
  • B. Pressure remains constant
  • C. Temperature remains constant
  • D. Heat is absorbed
Q. Which of the following statements is true for the complex [Fe(CN)6]3-? (2023)
  • A. It is a high-spin complex
  • B. It is a low-spin complex
  • C. It has a coordination number of 4
  • D. It is paramagnetic
Q. Which of the following statements is true regarding adsorption isotherms? (2020)
  • A. They describe the relationship between pressure and volume.
  • B. They describe the relationship between temperature and solubility.
  • C. They describe the relationship between the amount of adsorbate and its pressure at constant temperature.
  • D. They describe the relationship between the surface area and the mass of adsorbent.
Q. Which of the following statements is true regarding reduction? (2020)
  • A. It involves the gain of electrons
  • B. It involves the loss of electrons
  • C. It always occurs with oxidation
  • D. Both A and C are correct
Q. Which of the following statements is true regarding the Freundlich adsorption isotherm? (2020) 2020
  • A. It is applicable to monolayer adsorption.
  • B. It assumes a uniform surface.
  • C. It is a linear relationship.
  • D. It describes heterogeneous adsorption.
Q. Which of the following statements is true regarding the Freundlich adsorption isotherm? (2020)
  • A. It applies only to monolayer adsorption.
  • B. It is applicable to heterogeneous surfaces.
  • C. It predicts a constant adsorption capacity.
  • D. It is a linear relationship.
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