101. By which process copper is refined _______?
✅ B. Roasting
Author: Aurangzeb – Page 6
102. Which synthetic fibre is known as artificial Silk?
✅ A. Rayon
103. A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be ?
✅ D. 3 feet
104. Permanent hardness of water due to sulphate of metals can be destroyed by the use of ___ ?
✅ B. Zeolites
105. One of the following ways of expressing the concentration of a solution does not depend on temperature. It is_____?
✅ A. Molality
106. White bloods cells are also known as___?
✅ A. Leucocytes
107. The scientific study of insects is known as __?
✅ A. Entomology
108. P Waves are also said to be _____ waves?
✅ B. Push-pull
109. Lunar eclipse occurs on_____?
✅
110. Oil rises up to wick in a lamp because________?
✅ D. Capillary action phenomenon