Chemistry

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Q. What is the formula for calculating the number of moles of solute in a solution? (2023)
  • A. Molarity x Volume
  • B. Molarity / Volume
  • C. Volume / Molarity
  • D. Moles x Volume
Q. What is the freezing point depression of a solution containing 1 mole of NaCl in 1 kg of water? (2022)
  • A. 1.86 °C
  • B. 3.72 °C
  • C. 2.52 °C
  • D. 0.93 °C
Q. What is the freezing point depression of a solution containing 1 mole of solute in 1 kg of water? (Kf for water = 1.86 °C kg/mol) (2020)
  • A. 1.86 °C
  • B. 3.72 °C
  • C. 0.93 °C
  • D. 2.78 °C
Q. What is the freezing point depression of a solution containing 3 moles of KCl in 1 kg of water? (Kf for water = 1.86 °C kg/mol) (2022)
  • A. 5.58 °C
  • B. 3.72 °C
  • C. 1.86 °C
  • D. 7.44 °C
Q. What is the general electronic configuration of alkali metals? (2022)
  • A. ns^1
  • B. ns^2
  • C. ns^2np^1
  • D. ns^2np^2
Q. What is the general formula for aldehydes? (2023)
  • A. C_nH_(2n)
  • B. C_nH_(2n+1)CHO
  • C. C_nH_(2n+2)
  • D. C_nH_(2n-1)CHO
Q. What is the IUPAC name for CH3-CH2-CH2-CHO? (2020)
  • A. Butanal
  • B. Propanal
  • C. Pentanal
  • D. Hexanal
Q. What is the IUPAC name for CH3-CH2-CH2-COOH? (2020)
  • A. Butanoic acid
  • B. Propanoic acid
  • C. Pentanoic acid
  • D. Hexanoic acid
Q. What is the IUPAC name for CH3CH2COOH? (2021)
  • A. Propanoic acid
  • B. Butanoic acid
  • C. Acetic acid
  • D. Formic acid
Q. What is the IUPAC name of the carboxylic acid with the formula C3H6O2? (2023)
  • A. Propanoic acid
  • B. Butanoic acid
  • C. Acetic acid
  • D. Formic acid
Q. What is the main characteristic of a molecular solid? (2021)
  • A. High melting point
  • B. Low melting point
  • C. Good electrical conductivity
  • D. High density
Q. What is the main characteristic of amorphous solids? (2023)
  • A. Long-range order
  • B. Short-range order
  • C. Definite melting point
  • D. Anisotropic
Q. What is the main environmental concern associated with plastic waste? (2022)
  • A. Air pollution
  • B. Soil degradation
  • C. Water contamination
  • D. All of the above
Q. What is the main method of hydrogen production in the industry? (2022)
  • A. Electrolysis of water
  • B. Steam reforming of natural gas
  • C. Thermolysis of water
  • D. Photosynthesis
Q. What is the main method of hydrogen production in the laboratory? (2020)
  • A. Electrolysis of water
  • B. Thermal decomposition of water
  • C. Reaction of metals with acids
  • D. Steam reforming
Q. What is the main monomer used to produce polystyrene? (2021)
  • A. Ethylene
  • B. Styrene
  • C. Propylene
  • D. Vinyl chloride
Q. What is the main product formed when aluminum reacts with hydrochloric acid? (2023)
  • A. AlCl3
  • B. H2
  • C. Al(OH)3
  • D. Al2O3
Q. What is the main product formed when hydrogen reacts with oxygen? (2019)
  • A. Hydrogen peroxide
  • B. Water
  • C. Ozone
  • D. Hydrochloric acid
Q. What is the main product of the reaction between aluminum and hydrochloric acid? (2023)
  • A. AlCl3
  • B. H2
  • C. Al(OH)3
  • D. Al2Cl6
Q. What is the main product of the reaction between an acid and a base? (2019)
  • A. Salt
  • B. Water
  • C. Hydrogen gas
  • D. Carbon dioxide
Q. What is the main product of the reaction of 1-bromo-2-methylpropane with KOH in ethanol? (2020)
  • A. 2-methylpropene
  • B. 2-methylpropan-1-ol
  • C. 1-bromo-2-methylpropane
  • D. 2-bromo-2-methylpropane
Q. What is the main product of the thermal decomposition of ammonium dichromate? (2023)
  • A. Cr2O3
  • B. CrO3
  • C. Cr
  • D. NH3
Q. What is the main product when 1-bromopropane is treated with alcoholic KOH? (2021)
  • A. Propene
  • B. 1-propanol
  • C. 2-propanol
  • D. Bromopropane
Q. What is the main product when 1-bromopropane is treated with magnesium in dry ether? (2019)
  • A. Propane
  • B. Grignard reagent
  • C. Bromopropane
  • D. Propyl alcohol
Q. What is the main product when 1-chloropropane is treated with alcoholic KOH? (2019)
  • A. Propene
  • B. Propan-1-ol
  • C. Propan-2-ol
  • D. Chloropropane
Q. What is the main product when 1-chloropropane is treated with excess alcoholic KOH? (2020)
  • A. Propene
  • B. 1-Propanol
  • C. 2-Propanol
  • D. Chloropropane
Q. What is the main product when aluminum reacts with hydrochloric acid? (2023)
  • A. AlCl3
  • B. H2
  • C. Al(OH)3
  • D. Al2Cl6
Q. What is the main product when an aldehyde is treated with sodium bisulfite? (2019)
  • A. Aldol
  • B. Bisulfite adduct
  • C. Hydrocarbon
  • D. Alcohol
Q. What is the main product when an amine reacts with a carbonyl compound? (2019)
  • A. Amide
  • B. Alcohol
  • C. Aldehyde
  • D. Ketone
Q. What is the main product when an amine reacts with a haloalkane? (2019)
  • A. Amide
  • B. Quaternary ammonium salt
  • C. Alcohol
  • D. Ester
Showing 151 to 180 of 569 (19 Pages)
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