List of top Practical and scientific knowledge Questions

What is the function of these objects?
Some Objects Figure
Which betel nut cutter will require less force to be applied to cut a betel nut? Consider the hinge points to be at the same line.
Shown below are different forms for a step-stool. Which of the forms will remain stable when a person is standing on the top step?
Shown on the left is a socket with four holes in it. Which of the plugs will fit perfectly in this socket?
4 hole socket
A group of friends are on a trek. The sunlight is directly above them. No other light source is present. Identify the most appropriate lighting for this scene.
A plane is landing smoothly on the airport runway. Select the correct picture.
Which letter is NEVER used while printing the calendar mentioning names of all the days of the week and months in full form?
The figure shows a mechanism with a disc, two bars and a static surface connected to each other with hinges. The disc rotates about the hinge at its centre as shown. What is the path traced by point X (end point of the longest bar) in this planar set up?
The figure shows a mechanism with a disc, two bars and a static surface
Figure shows a clothes line attached to four independent pulleys P, Q, R & S. Which of the options represent the correct rotation of pulleys that would result in lowering the clothes line?
Clothes line attached to four independent pulleys
Shown below is an image that represents how cups should stack on top of each other in a stable manner. Among the given different types of cups, which of the cups CANNOT stack on itself in a stable manner?
Stack of cups
The figures show four different schematics of two flexible strings. If all the ends are pulled tight, which of the options will form a knot?
An illustration of a walking ant and a pair of glasses lying on the table surface is shown. Which is the correct illustration from the ant’s current point of view?
An illustration of a walking ant and a pair of glasses lying on the table
Identify the correct set of legs for Mr. Kumar to balance his body as he carries a heavy box.
set of legs
Identify the correct representation of lighting for this scene, given that the lightening strike is the only light source.
Which of the options can be associated with all the objects?
Which of the options can be associated with all the objects