evs chapter 2,3,4

which of the following is not a renewable resource?

• coal

• wind power

• geothermal energy

• dentrotherm al energy

forest is responsible for a

• watershed protection

• land erosion control

• land erosion control

• providing economic and environment al benefits.

• all of given

any material that can be transformed into more valuable and usefull product or service is called

• resource

• mineral

• product

• none of the above .

India has largest reserve of ---------------after Brazil.

• iron ore

• bauxite

• coal

• copper.

a sudden uncontrol descent of a mass of earth under the force gravity is called.

• soil erosion

• minning

• landslide

• earth quake l

hydroscopic and combined water .

• are used by plants during transpiration

• stored in xylem tissues of plants

• are of no use for plants.

• compensate for loss due to evapotranspi ration by plants .

the constituents of producer gas are.

• 25 percent water vapour,75 percent methane .

• 42percent methane ,8 percent propane ,rest is carbon dioxide.

• 55 percent methane,45percentcarb on dioxide.

• 45percent methane ,20percent carbondioxid e,35 perce

the least quality of the coal with 95%carbon conent and 5% volatile matter is

• liginite coal

• anthracite coal

• bituminous coal

• peat coal .

which of the following methods of timber extraction cause minimum environmental damage?

• clear felling

• hand logging

• slective logging d)reduced impact logging

• reduced impact logging

the main purpose of dam construction

• irrigation

• flood control

• hydroelctricity

• provide water to industr