Which vitamin is obtained from Sun-rays?
Vitamin A
Vitamin C
Vitamin K
Vitamin D
D.
Vitamin D
Soil having high content of aluminum and iron oxide is also known as ________.
meadow soil
pedalfer soil
chernozen soil
podzols soil
Which of the following gas was released during Bhopal gas tragedy?
Methyl isocyanate
Sodium isothiocyanate
Nitrogen isothiocyanate
Potassium isothiocyanate
Match the following:
Scientist | Invention |
1. Joseph Thomson | a. Optical Fiber |
2. Alexander Fleming | b. Radium |
3. Narinder Kapany | c. Electron |
4. Marie Curie | d. Penicillin |
1 - c, 2 - d, 3 - a, 4 - b
1 - a, 2 - d, 3 - c, 4 - b
1 - c, 2 - a, 3 - d, 4 - b
1 - a, 2 - d, 3 - b, 4 - c
Which of the following gas contributes the maximum to the phenomena of global warming?
Methane
Chlorofluorocarbon (CFC)
Nitrogen dioxide
Carbon dioxide
Which among the following is a major cause of acid rain?
Carbon dioxide
Carbon monoxide
Nitrogen dioxide
Oxygen