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Q13: Methane is the chief constituent of<br>A)natural gas.<br>B)gasoline.<br>C)diesel
Q16: X-rays are<br>A)electromagnetic waves of very short wavelength.<br>B)electromagnetic
Q20: Scientific theories<br>A)must be constantly reviewed to see
Q28: Amino acids are the basic units of<br>A)carbohydrates.<br>B)proteins.<br>C)lipids.<br>D)nucleic
Q32: Arrange these fuels in increasing order of
Q36: Which one or more of the following
Q42: Which of the following is not true
Q44: The weight of a 60-kg person is<br>A)6.1
Q47: An object moving in a circle at
Q51: Coral reefs are composed of<br>A)granite.<br>B)shale.<br>C)quartzite.<br>D)limestone.