Our Environment
The factors that affect the growth, reproduction and other activities of interacting living organisms in an ecosystem refer to
(1) Biotic components
(2) Abiotic components
(3) Physico-chemical factors
(4) Both (2) & (3)
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Our Environment
The pH of a sample of water collected from a river is found to be 3.5 to 4.5. The most likely reason for this is the waste being discharged into the river from
(1) Soap and detergent manufacturing factory
(2) Car battery manufacturing factory
(3) Alcohol manufacturing factory
(4) Plastic cups moulding factory
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Our Environment
Which of the following limits the of trophic levels in a food chain
(1) water
(2) polluted
(3) deficient food supply
(4) decrease in energy at higher trophic levels
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Our Environment
CPCB runs a project on prevention and control of pollution of Ganga. The acronym CPCB stands for
(1) Control of Pollution and Co-ordination Board
(2) Central Pollution Control Board
(3) Central Pollution Control of Ganga Basin
(4) Central Pollutant Control Boar
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Our Environment
Chipko Movement was the tree hugging movement in which the villagers compell the axeman to stop tree felling by embracing and forming circle around the marked trees. Which of the following person was not related with this movement?
(1) Amrita Devi Bisnoi
(2) Gaura Devi
(3) Sunderlal Bahugana
(4) Chandi Prasad Bhatt
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Our Environment
Sometimes back ‘kulhads’ were introduced for serving tea in trains. But now the use of these kulhads has been discouraged. What is the most probable reason for his act?
(1) These kulhads remain as such and pollute the environment
(2) Burning of these kulhads produces toxic gases & cause air pollution
(3) Kulhads release some metal ions which react with tea and make it toxic to drink
(4) Production of these kulhads results in the loss of the fertile top soil
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Our Environment
The most appropriate definition of any natural resources is that it is a substance that is
(1) present only on land
(2) available only in the forest
(3) a man-made substance placed in nature
(4) a gift of nature which is very useful to mankind
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
