If the sign was nailed to the side of a tree 5' above the ground in 1997 how high would the sign bein 2007 if the tree grew 4' taller each year?
1). 5' high
2). 8' high
3). 4' 8'
4). 9'4'
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1. The chemical name of 'laughing gas is
2. Which of the following is used to denature ethanol ?
3. Which of the following is chiefly present in LPG (Liquefied Petroleum Gas)?
4. The selective digestion of cytoplasmic organelles by the lysosomes is called
5. Which of the following metals form an amalgam with other metals ?
6. Which of the following has no units?
7. Which one of the following metals does not react with water to produce Hydrogen ?
8. A man cannot see clearly beyond 10 meters. The disease he suffers from :