Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
The light energy escaping from the sun can be spread by ?
a shower of rain drops
a plane mirror
a convex lens
a combination of a convex lens and a concave lens
The correct sequence of energy transfer that occurs when an apple falls to the ground is ?
Gravitational potential energy → heat energy to air → kinetic energy → heat energy to ground and apple → sound energy
Gravitational potential energy → sound energy → kinetic energy → heat energy to air → heat energy to ground and apple
Gravitational potential energy → kinetic energy → heat energy to air → heat energy to ground and apple → sound energy
Gravitational potential energy → kinetic energy → sound energy → heat energy to air → heat energy to ground and apple
Which one of the following minerals is used as a fuel in nuclear power stations?
Bauxite
Quartz
Feldspar
Pitchblende
Which one of the following is an example of a clean fuel?
Coke
Propane
Petrol
Wax
Which one of the following metals does NOT react with cold water?
Calcium (Ca)
Potassium (K)
Magnesium (Mg)
Sodium (Na)
