Q41. Which functional group is present in aldehydes but absent in ketones?

Q42. What is the process of an atom or molecule losing or gaining electrons, resulting in the formation of charged particles called ions?

Q43. Oxidation stability is important for lubricants because it:

Q44. Which stage of water treatment primarily removes suspended solids like sand and silt?

Q45. If the concentration of reactants in a voltaic cell increases, the cell potential will

Q46. A fuel cell produces electricity from a chemical reaction. Which of the following is NOT a common fuel used in fuel cells?

Q47. What is the primary disadvantage of grease lubrication compared to oil lubrication?

Q48. Electrons are located in:

Q49. The standard electrode potential of a hydrogen electrode is 0 V. Which statement is TRUE about a metal with a more positive standard electrode potential?

Q50. For which of the following is cis-trans isomerism possible?