CHEMISTRY ( LECTURE 2)

LECTURE-1

NDA 1 EXAM 2022 | NDA CHEMISTRY PREVIOUS YEAR QUESTIONS PART 2

Chemistry in Everyday life

In a class of 175 students the following data shows the number of students opting one or more subjects Mathematics 100, physics 70, chemistry 28, physics and Chemistry 23, mathematics and chemistry 28 , mathematics and physics 30 , mathematics physics and chemistry 18. how many students have offered mathematics alone ?

Seven different lecturers are to deliver lectures in seven perday. A, B and C are three oftne lectures. The number of ways in which a routine for theday canr be made such that A delivers his lecture before B and B before C, is

There are 3 doors to a lecture room. In how many ways can lecturer enter and leave the room ?

There are 3 doors to a lecture room. In how many ways can lecturer enter the room from one door and leave from another door?

What was the contribution of Lavoisier to chemistry?

Give the product, indicating stereo-chemistry of cyclohexene with Br_2

Chemistry is the science of ...... and their ....... (substances/transformations/gases)