Q61. Which one of the following types of laser is used in laser printers?
[A] Gas laser
[B] Semiconductor laser
[C] Excimer laser
[D] Dye laser
Q62. Which of the following is not a sedimentary structure?
[A] Ripple marks
[B] Cross beds
[C] Magma emplacement
[D] Mud cracks
Q63. Which of the following is an example of the most explosive type of volcano?
[A] Flood basalt volcanoes
[B] Shield volcanoes
[C] Calderas volcanoes
[D] Cinder cones volcanoes
Q64. Of the following, which element is common to all acids
[A] sulphur
[B] hydrogen
[C] oxygen
[D] carbon
Q65. Speed of laser printer is measured in
[A] LPM
[B] DPI
[C] PPM
[D] CPM
Q66. A chain of islands closely scattered in a body of water is called:
[A] Archipelago
[B] Canyon
[C] Reef
[D] Strait
Q67. The uranium fuel used worldwide is mainly in the form of
[A] U metal
[B] UF6
[C] U3O8
[D] UO2
Q68. Which of the following parts of the sun is easily visible only during a total solar eclipse?
[A] sunspots
[B] photosphere
[C] corona
[D] core
Q69. What is scientific name of “Tulsi”?
[A] Cojonus Cgjan
[B] Zea Mays
[C] Gossypium Herbaceum
[D] Ocimum Sanctum
Q70. Enceladus is the moon of which planet?
[A] Neptune
[B] Saturn
[C] Venus
[D] Jupiter