Critical Thinking

According to biologists Ron Sender and Ron Milo of the Weizmann Institute of Science in Israel, your body replaces around 330 billion cells per day. At that rate, your body is making over 3.8 million new cells every second. Most of those are blood cells, followed by cells in your gut.

Q #1) A student covers distance of 2 km from his house to school and returns back the distance and displacement covered by the student is:

A) 2000 m , Non zero
B)4000 m , Non zero
C) 2000 m , Zero
D) 4000 m , Zero

The greatest decrease in size of atoms is observed in which of the following period of periodic table?

a) Period 3
b) Period 4
c) Period 5
d) Period 6

Which one of the following is common for all the derivatives of Carboxylic acid?

a) Hydrolysis
b) Alcoholysis
c) Ammonilysis
d) None