The chemical used in embalming biological materials is
1). formaldehyde in water
2). formaldehyde in methanol
3). ethyleneglycol
4). gaseous formaldehyde
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1. Which mineral is the ore Of aluminium?
2. Which of the following molecules has a bond order of 2.5?
3. The fiber least prone to catch fire is
4. The length of double bond is _______ than single bond.
5. Chromite is an ore/mineral of
6. Which one of the following is used as an anti-freeze for the automobile engines ?
7. Why boiling point of water decreases at high altitudes?
8. Question 6.18:What is the role of cryolite in the metallurgy of aluminium?
9. Name two elements that find wide application in transistor industry