Everyday Science MCQs

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231

231. Does the hummingbird belong to a category called?

  1. Ectotherm
  2. Endotherm
  3. Exotherm
  4. Heterotherm.

232. The Sun’s mass mainly consists of hydrogen (about 73%). The second main constituent (about 25%) is

  1. Hydrogen
  2. Helium
  3. Carbon dioxide

233. A radioactive isotope of Uranium used in Nuclear Bomb is?

  1. 92 U 235
  2. 92 U 234
  3. 92 U 233
  4. 92 U 238

234. Which woody raw material is used for the manufacture of paper pulp?

  1.  Cotton
  2. Poplar
  3. Bagasse

235. Does the rectified spirit contain alcohol?

  1. 80%
  2. 95%
  3. 70%
  4. 85%