Discussion
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- Question
The most abundant metal in earth crust is
Options- A. Iron
- B. magnesium
- C. calcium
- D. aluminium
- Correct Answer
- aluminium
- 1. What type of compound is Lecithin?
Options- A. Sterol
- B. Phospholipid
- C. Lipoprotein
- D. Glycolipid Discuss
- 2. Ethane gas has a slightly ______ taste.
Options- A. sweet
- B. bitter
- C. sour
- D. salty Discuss
- 3. The (O-H) bond in CH3OH is _____.
Options- A. polar covalent
- B. ionic
- C. non polar covalent
- D. cationic Discuss
- 4. PET is a very familiar form of _____________. It is used for making bottles.
Options- A. Nylon
- B. Acrylic
- C. Polyester
- D. Rayon Discuss
- 5. The passage of an electric current through a conducting liquid causes ___________.
Options- A. Galvanisation
- B. Evaporation
- C. Physical Reaction
- D. Chemical Reaction Discuss
- 6. Cathode rays have
Options- A. mass only
- B. charge only
- C. no mass and no charge
- D. mass and charge both Discuss
- 7. The activity of rradioisotope change with
Options- A. temperature
- B. pressure
- C. chemical environment
- D. None of these Discuss
- 8. The alpha-particles are
Options- A. high energy electrons
- B. positively charged hydrogen irons
- C. high energy x ray radiations
- D. double positively charged helium nuclei Discuss
- 9. Formation of anions occurs by
Options- A. loss of neutrons
- B. gain of protons
- C. gain of electrons
- D. none Discuss
- 10. Which among the following is the most electronegative element?
Options- A. Flourine
- B. Bromine
- C. Iodine
- D. Oxygen Discuss
Chemistry problems
Search Results
Correct Answer: Phospholipid
Explanation:
Lecithin is a Phospholipid type of compounds. The main phospholipids in lecithin from soya and sunflower are phosphatidyl choline, phosphatidyl inositol, phosphatidyl ethanolamine, and phosphatidic acid.
Correct Answer: sweet
Correct Answer: polar covalent
Correct Answer: Polyester
Correct Answer: Chemical Reaction
Correct Answer: mass and charge both
Correct Answer: None of these
Correct Answer: double positively charged helium nuclei
Correct Answer: gain of electrons
Correct Answer: Flourine
Explanation:
Flourine is the most electro negative element due to its small atomic radius .It also has the tendency to accept an electron to complete octet configuration
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