41. What are the 4 major elements of amino acids?
42. As a dehydrating agent to convert ethanol to ethane . . . . . . . . is used.
43. What is the chemical formula of glycerol?
44. Which of the following contains ethanoic acid?
45. Consider the following statements.
1. Carbon black is obtained when methane is heated in absence of air.
2. Kerosene is a mixture of alphatic hydrocarbons.
3. Most of hydrocarbons from petroleum are obtained by fractional distillation.
Which of the statements given above are correct?
1. Carbon black is obtained when methane is heated in absence of air.
2. Kerosene is a mixture of alphatic hydrocarbons.
3. Most of hydrocarbons from petroleum are obtained by fractional distillation.
Which of the statements given above are correct?
46. What is the bond angle (in degrees) in the structure of a benzene molecule?
47. Which of the following acid found in Apple?
48. Which organic compound has the structure R - COOH, with R referring to the alkyl, alkenyl, aryl or other group?
49. Which one of the following is burned in oxygen, producing a very hot flame, used for welding and cutting metals?
50. Functional group -CHO is present in which of the following?
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