- LED technology is energy efficient.what does LED stand for?
- Which one of the following greenhouse gases has the greatest warming effect?
- Within how many days, a land owner may present a petition to the Revenue Officer for a reconsideration of the amount, form or condition of the assessment of revenue?
- Plants during night exhale:
- Which of the following gases is used for refrigeration?
- The solidified form of which gas is known as Dry Ice?
- Which of the following is the lighest gas?
- Which of the following gases is mainly causing global warming:
- Which gas is used in electric bulb
- which rocks make the earth’s surface or crust: