Water is to oxygen as salt is to
The layer of atmosphere close to earths atmosphere is known as :
A black body absorbs:
The metal used in storage cell is
The disease " bronchitis " is associated with:
To meet its rapidly growing energy demand, some opine that India should pursue research and development on thorium as the future fuel of nuclear energy. In this context what advantage does thorium hold over uranium?
1. Thorium is far more abundant in nature than uranium.
2. On the basis per unit mass of mined mineral, thorium can generate more energy compared to natural uranium.
3. Thorium produces less harmful waste compared to uranium.
Which is correct?
The increasing amount of carbon dioxide in the air is slowly raising the temperature of the atmosphere, because it absorbs
Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?
a) Hydrogen, Oxygen, Sodium
b) Carbon, Hydrogen, Nitrogen
c) Oxygen, Calcium, Phosphorous
d) Carbon, Hydrogen, Potassium
Answer: B
Other than resistance to pests, what are the prospects for which genetically engineered plants have been created?
Consider the following statements:
1. The duration of the monsoon decreases from southern India to northern India.
2. The amount of annual rainfall in the northern plains of India decreases from east to west.
Which of the statements given above is/are correct?
Consider the following kinds of organisms:
1. Bat
2. Bee
3. Bird
Which of the above is/are pollinating agent/agents?
If there were no phenomenon of capillarity
1. it would be difficult to use a kerosene lamp
2. one would not be able to use a straw to consume a soft drink
3. the blotting paper would paper would fail to function
4. the big trees that we see around would not have grown on the earth
Which of the following statements given above are correct?
The Millenium Ecosystem Assessment describes the following major categories of ecosystem services-provisioning, supporting, regulating, preserving and cultural. Which one of the following is supporting service?
Which of the following can be threats to the biodiversity of a geographical area?
1. Global warming
2. Fragmentation of habitat
3. Invasion of alien species
4. Promotion of vegetarianism
Select the correct answer using the codes given below:
1. Bacteria
2. Fungi
3. Flowering plants
Some species of which of the above kinds of organisms are employed as bio pesticides?