This document contains 15 multiple choice quiz questions about general knowledge topics including population density, land use classifications, Earth's layers, solstices, waste land, trade routes, air pollution, ocean coverage, urban zones, air composition, hemispheric date differences, states of matter, Alexander Fleming's contributions, combustion requirements, and filtration. The questions cover subjects in geography, science, history, and other areas of broad interest with the goal of testing overall knowledge across several domains.

1. General Knowledge [Questions & Answers] |Part 62|
Multiple choice quiz questions and answers
1 Number of people that lives in square kilometer of land is classified as _________.
2 Area in which wholesale and manufacturing activities are carried out is classified as
_________.
3 Distinct layers of Earth does not include _________.
4 In Northern Hemisphere, nights and days are equal _________.
5 Abandoned land that is not good for cultivation anymore is classified as _________.
6 Network of routes which links Europe, Northeast Africa and Asia is classified as
_________.
7 Harmful substance released by power plants and cars is _________.
8 Percentage of Earth surface which is covered by oceans and seas is _________.
9 Specific area in urban settlement in which specific activities are concentrated is
classified as _________.
10 Main constituent in air is _________.
11 Calendar days of Eastern and Western Hemispheres are separated by _________.
12 On cooling, a liquid will be changed into _________.
13 Canadian engineer Sir Alexander Fleming is also known as _________.
14 Combustion cannot take place without _________.
15 Remaining solid on filter paper is known as _________.