Natural Resources
Which of the following practices are suitable to farmer with less wat er resources ?
(A) Select a short term crop (B) Cultivate commercial crops
(C) Adopt drip irrigat ion system (D) Crop holiday
Choose the correct answer :
(1) A and C (2) A, B and C (3) A and D (4) C and D
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Natural Resources
Read the following paragraph and fill up the blanks with correct option.
Decline in the thickness of ozone layer over a restricted area is called _________ . It was first discovered over__________ in 1985. Amount of atmospheric ozone is measured by ___________ spectrometer and is expressed in ___________ Units
(1) Ozone hole, Australia, Dobson, Watson
(2) Ozone hole, Antarctica, Dobson, Dobson
(3) Ozone shield, Greenland, Watson, Dobson
(4) ODS hole, USA, Watson, Watson
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Natural Resources
What are the factors which contribute in the formation of soil ?
(1) Sun and water
(2) Sun and wind
(3) Wind and living organism
(4) Both (1) & (3)
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Natural Resources
Water vapours changes into water droplets by
(1) condensation
(2) evaporation
(3) sublimation
(4) none
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Natural Resources
The nitrogen molecules present in air can be converted into nitrates and nitrites by
(1) a biological process of nitrogen fixing bacteria present in soil
(2) a biological process of carbon fixing factor present in soil
(3) any of the industries manufacturing nitrogenous compounds
(4) The plants used as cereal crops in field
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Natural Resources
What will happen if snake is missing in the food chain given below ?
Grains -> Rat -> Snake -> Eagle
(1) Total quantity of grains may increase
(2) Population of eagles may increase
(3) Eagle starts to eat grains
(4) Populaton of rats may increase
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Natural Resources
Which one is more permanent ecosystem?
(1) Forest
(2) Mountain
(3) Desert
(4) Sea
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Natural Resources
Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as
(1) Eutrophication (2) Pollution (3) Biomagnification (4) Accumulation
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Natural Resources
The study of interaction between living organism and environmentis called
(1) Ecology (2) Phytogeography (3) Psychology (4) Mycology
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
