#1 Which is not the use of divider?
Divider can be used for those purposes as mentioned in options. But we cannot use divider as a compass and even if we want the compass to be used as divider we can change the pencil part with needle attachment.
#2 _________ is used to draw curves which are not circular.
French curves are used for drawing curves which can’t be drawn with a compass. A faint freehand curve is first drawn through the known points. Longest possible curves exactly coinciding with the freehand curve are then found out from the French curve. Finally, a neat continues curve is drawn with the aid of the French curve.
#3 A wire of length 2m and another wire of length 5m are made up of the same material and have the same area of cross section, which wire has higher resistance?
Resistance is directly proportional to the length of the wire, hence as the length of the wire increases, resistance increases.
#4 Which of the following represents the physical characteristics of water?
Turbidity represents the physical characteristic of water, whereas BOD, COD and chloride content represents the chemical characteristic of water.
#5 Identify the incorrect statement from the following?
If the odor intensity of water is 6, it indicates extremely strong odor and when it is 0, it indicates the odorless water.