What is the element required for solar energy conversion
1). Beryllium
2). Tantalum
3). Silicon
4). Ultra pure carbon
1. Chernobyl disaster is the result of pollution by_____________
2. Which of the following alkali metals has highest specific heat?
3. NaHCO3 is chemical formula for...............
4. Which of the following is the petroleum wax ?
5. The chemical(s) most commonly used for cloud seeding or artificial rainmaking is are
6. The advantage of detergents over soaps is
7. Fermentation is a type of _____ _______ process .
8. Which gas does not form the part of atmosphere