Please select a subject first
Advertisements
Advertisements
Give a scientific reason.
Power generation plant based on natural gas is eco-friendly.
Concept: undefined >> undefined
Even today there is a need for movements like 'Chipko' movement. Explain this with the help of an example that you have experienced.
Concept: undefined >> undefined
Advertisements
What is the full form of UNEP?
Concept: undefined >> undefined
Complete the following table taking into account the relation between the entries in three columns:
| Air pollution | Water pollution | Soil pollution | |
| Components | Gases: CO2, CO, Hydrocarbons, Sulphur, NOx, Hydrogen sulphides etc. Solid: dust, ash, carbon, lead, asbestos, etc. |
||
| Source | Industrial wastes, domestic wastes, sewage, chemicals discharged from industries, pesticides used in agriculture. |
||
| Effect | Soil erosion, retarded growth of plants/ crops, Nutritional deficiency etc. |
Concept: undefined >> undefined
Name the act under which trading of rare animals has been completely banned.
Concept: undefined >> undefined
Why is there a need for conservation of the environment?
Concept: undefined >> undefined
Complete the following conceptual picture:
Concept: undefined >> undefined
What are the different types of air pollutants?
Concept: undefined >> undefined
Give two sources of air pollution.
Concept: undefined >> undefined
Mention one measure to control air pollution.
Concept: undefined >> undefined
Match the correct pair:
| Column 'A' | Column 'B' | ||
| (1) | Forest Conservation Act |
(a) | 1986 |
| (b) | 1980 | ||
| (c) | 1970 |
Concept: undefined >> undefined
Write four adverse effects of radiations on human body.
Concept: undefined >> undefined
Write any four important facts which must be thought over while considering the scope of disaster.
Concept: undefined >> undefined
Name the following:
Main ore of aluminium.
Concept: undefined >> undefined
…………. is not essential for photosynthesis.
(a) Oxygen
(b) Carbon dioxide
(c) Light
(d) Chlorophyll
Concept: undefined >> undefined
In the extraction of aluminium: Name the process of concentration of bauxite.
Concept: undefined >> undefined
Considering the relationship in the first pair, complete the second pair:
Root : Vegetative propagation : : Flower : ____________
Concept: undefined >> undefined
The process of absorption of water into raisins occurs through its membranes. This process is known as ______________.
(a) Absorption
(b) Osmosis
(c) Adsorption
(d) Diffusion
Concept: undefined >> undefined
In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.
Concept: undefined >> undefined
In the extraction of aluminium: Write the function and formula of cryolite in the extraction of aluminium.
Concept: undefined >> undefined
