Discussion
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- Question
Which type of fire extinguisher is used for petroleum fire?
Options- A. Powder type
- B. Liquid type
- C. Soda acid type
- D. Foam type
- Correct Answer
- Powder type
- 1. Which one of the following is the petroleum wax?
Options- A. Paraffin wax
- B. Jonoba wax
- C. Carnauba wax
- D. Bees wax Discuss
- 2. Which of the following is a protein?
Options- A. Natural rubber
- B. Starch
- C. Cellulose
- D. None of these Discuss
- 3. The type of glass used in making lenses and prisms is
Options- A. jena glass
- B. soft glass
- C. pyrex glass
- D. flint glass Discuss
- 4. Epoxy resins are used as
Options- A. detergents
- B. insecticides
- C. adhesives
- D. moth repellents Discuss
- 5. Glass is made of the mixture of
Options- A. quartz and mica
- B. sand and silicates
- C. salt and quartz
- D. sand and salt Discuss
- 6. The major ingredient of leather is
Options- A. collagen
- B. carbohydrate
- C. polymer
- D. nucleic acid Discuss
- 7. Rayon is chemically
Options- A. cellulose
- B. pectin
- C. glucose
- D. amylase Discuss
- 8. How does common salt help in separating soap from the solution after saponification?
Options- A. By decreasing density of Soap
- B. By decreasing solubility of Soap
- C. By increasing density of Soap
- D. By increasing solubility of Soap Discuss
- 9. Detergents used for cleaning clothes and utensils contain?
Options- A. bicarbonates
- B. bismuthates
- C. sulphonates
- D. nitrates Discuss
- 10. Gypsum is added to cement clinker to
Options- A. increase the tensile strength of cement
- B. decrease the rate of setting of cement
- C. facilitate the formation of colloidal gel
- D. bind the particles of calcium silicate Discuss
General Science problems
Search Results
Correct Answer: Paraffin wax
Explanation:
Paraffin wax is obtained from petroleum by dewaxing light lubricating oil stocks. It is used in candles, wax paper, polishes, cosmetics, and electrical insulators. It assists in extracting perfumes from flowers, forms a base for medical ointments, and supplies a waterproof coating for wood. In wood and paper matches, it helps to ignite the matchstick by supplying an easily vaporized hydrocarbon fuel.
Correct Answer: Natural rubber
Correct Answer: flint glass
Correct Answer: adhesives
Correct Answer: sand and silicates
Correct Answer: collagen
Correct Answer: cellulose
Correct Answer: By decreasing solubility of Soap
Correct Answer: sulphonates
Correct Answer: decrease the rate of setting of cement
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