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
When objects at different distances are seen by the eye, which of the following remains constant ?
The focal length of the eye lens
The object distance from the eye lens
The radii of curvature of the eye lens
The image distance from the eye lens
Water flows out of the hole of a bucket and follows a parabolic path. If the bucket falls freely under gravity, the water flow (ignoring air resistance)
follows a straight-line path relative to the falling bucket
follows a parabolic path relative to the falling bucket
stops
decreases but continues to flow
The elements which exist in liquid state at room temperature are:
Mercury
Lead
Sodium
Calcium
Aluminium is more reactive than iron. But aluminium is less easily corroded than iron because:
aluminium is a noble metal
oxygen forms a protective oxide layer on aluminium surface
iron unergoes reaction easily with water
iron forms both mono and divalent ions
According to which one of the following laws it is indicated that when two or more gases react with one another, their volumes bear a simple ratio?
Law of mass action
Law of multiple proportions
Law of reciprocal proportions
Law of combining volumes
