Subject :NSO Class : Class 6
Which of the following statements is false?
AMeasuring tape is not suitable to measure the girth of a tree.
BA suitable measuring device is must to measure the length of an object.
CIn ancient India, small length measurements used were an angul or a mutthi.
DElectric trains, monorail, supersonic aeroplanes and spacecrafts are some of the 20th century contributions.
I could not understand the solution to this question at all. Please give clearer and accurate solutions.