11) A well constructed in ground without passing any impervious stratum is called as

• (a) infiltration well
• (b) tube well
• (c) artesian well
• (d) shallow well

12) Absolute pure water is good for health.

• (a) Right
• (b) Wrong

13) The earth’s water circulatory system is known as

• (a) water cycle
• (b) hydrological cycle
• (c) precipitation cycle
• (d) all of these

14) An artesian spring is formed

• (a) when an aquifer gets exposed in a valley against a vertical cut
• (b) due to continuous fault in a rock through which water under pressure comes out
• (c) when a porous strata gets enclosed between two impervious strata
• (d) none of the above

15) The quantity of water available from an infiltration gallery depends upon the

• (a) size of gallery
• (b) nature of soil
• (c) yield of source
• (d) all of these