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- Question
Detergents used for cleaning clothes and utensils contain?
Options- A. bicarbonates
- B. bismuthates
- C. sulphonates
- D. nitrates
- Correct Answer
- sulphonates
- 1. 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
- 2. Rayon is chemically
Options- A. cellulose
- B. pectin
- C. glucose
- D. amylase Discuss
- 3. The major ingredient of leather is
Options- A. collagen
- B. carbohydrate
- C. polymer
- D. nucleic acid Discuss
- 4. Which type of fire extinguisher is used for petroleum fire?
Options- A. Powder type
- B. Liquid type
- C. Soda acid type
- D. Foam type Discuss
- 5. Which one of the following is the petroleum wax?
Options- A. Paraffin wax
- B. Jonoba wax
- C. Carnauba wax
- D. Bees wax Discuss
- 6. 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
- 7. Wood is the main raw material for the manufacture of
Options- A. paint
- B. paper
- C. ink
- D. gun powder Discuss
- 8. The most explosive type of volcano is
Options- A. the caldera
- B. a cinder cone
- C. basalt plateau
- D. shield volcanoes Discuss
- 9. The main dividing line between the geological regions of the Indo Gangetic plain and the peninsula is
Options- A. the Vindhya range
- B. the Aravallis
- C. the Nilgiri hills
- D. the Satpwas Discuss
- 10. The major events of Pre-Cambrian era include
Options- A. formation of crust, continents and oceans
- B. formation of crust, birth of oldest known rock, origin of life
- C. formation of present day atmosphere
- D. All of the above. Discuss
General Science problems
Search Results
Correct Answer: By decreasing solubility of Soap
Correct Answer: cellulose
Correct Answer: collagen
Correct Answer: Powder type
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: decrease the rate of setting of cement
Correct Answer: paper
Correct Answer: the caldera
Correct Answer: the Vindhya range
Correct Answer: All of the above.
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