Which of the following is an inert gas group?
Alkaline metal group
16th group
Halogen group
18th or zero group
Read the given question and decide which of the following statement(s) is/are sufficient to answer the question.
Question:
Which is the lightest box among B 1 , B 2 , and B 3? Statements:
1. B 1contains packaged food.
2. The weight of B 3 is one-fourth of the weight of all the other boxes added together.
Statements 1 and 2 both are sufficient
Statement 2 alone is sufficient.
Statement 1 alone is sufficient
Statements 1 and 2 both are not sufficient.
A porter lifts 20 kg of goods from the ground and places it on his head 2 m above the ground. Calculate the work done by him on the goods. (g = 10ms -2 is given)