DNA stands for _____.
1). Di Nucleic Acid
2). Deoxy Nucleic Acid
3). Diribonucleic Acid
4). Deoxyribonucleic Acid
1. Humburger effect is otherwise known as
2. German silver is an alloy of
5. Which is the purest form of iron ?
6. Which one of the following elements is used in the manufacture of safety matches?
7. Rock salt is a mineral containing
8. Which of the following is a renewable source of energy ?
9. The open "Sigrees" or coal stoves often require fanning to sustain burning because of
10. Water is not effective in extinguishing a fire caused by petrol because