A. chlorine
B. hydrogen
C. oxygen
D. carbon dioxide
Related Mcqs:
- Biogas is composed of __________?
- The most abundant gas emitted from volcanoes is __________?
- The two major consitituents of the sun are
- Which are the four most abundant elements in living cells ??
- Which of the following gases is not found free in air?
- If naked pea seeds were kept in four respiratory flasks, they would germinate best if flask contains:
- Which of the following has miximum specific heats ratio
- According to most accepted theories, the atmosphere of earth before origin of life consisted of a mixture of:
- Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth’s atmosphere?
- When oil and gas resources are burnt they kill many forests and lakes by __________?
