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- Question
Order of basicity of amines
- Correct Answer
- The order of basicity for primary, secondary and tertiary amines are: Secondary > Primary > Tertiary > NH3 * Amines are basic in nature as they have lone pair of electrons on nitrogen Therefore, they have a strong tendency to donate this lone pair of electrons to electron acceptors * The stability of conjugate acids formed is dependent on the extent of H-bonding,and greater the number of H-atoms on N more stable is the conjugate acid * The conjugate acid of primary amine is the most stable with greater number (3) of H-bonds than > Secondary > tertiary But primary amines are less basic than secondary as the electron density on the N atom is less and lone pair of electrons are not readily available for protonation * The two opposing factors ie the stability of conjugate acids formed and ease of availability of electrons for Protonation, balance each other in case of secondary amines and it is most basic
- 1. What 'game' was first produced by the Southern Novelty Company in Baltimore, Maryland in 1892?
Options- A. Frisbee
- B. Monopoly
- C. Ouija board
- D. Ping Pong Discuss
- 2. The moon orbits the earth at a mean distance approximately
Options- A. 0.384 million km
- B. 149.6 million km
- C. 579 million km
- D. 227.9 million km Discuss
- 3. The monomer of polythene is
Options- A. vinyl chloride
- B. ethylene
- C. ethyl alcohol
- D. None of the above Discuss
- 4. The most densely populated country of Africa is
Options- A. Mauritius
- B. Rwanda
- C. Burundi
- D. Sierra Leone Discuss
- 5. RAM stands for...
Options- A. Random Access Memory
- B. Really Annoying Machine
- C. Read A Manual
- D. Real Absolute Memory Discuss
- 6. The International Court of Justice is located at
Options- A. Geneva
- B. Hague
- C. Amsterdam
- D. Vienna Discuss
- 7. Galvanised iron sheets have a coating of
Options- A. lead
- B. chromium
- C. zinc
- D. tin Discuss
- 8. Mach number is used in connection with the speed of
Options- A. sound
- B. aircraft
- C. spacecraft
- D. ships Discuss
- 9. The river Jordan drains into the
Options- A. Dead Sea
- B. Adriatic Garden
- C. Gulf of Suez
- D. Resaca Garden Discuss
- 10. How many banks were nationalized in 1969?
Options- A. 16
- B. 14
- C. 15
- D. 20 Discuss
More questions
Correct Answer: Ouija board
Explanation:
The board was invented by Isaac and William Fuld. The word 'Ouija' comes from the French and German words for 'yes', 'oui' and 'ja'.
Correct Answer: 0.384 million km
Correct Answer: ethylene
Correct Answer: Mauritius
Correct Answer: Random Access Memory
Correct Answer: Hague
Correct Answer: zinc
Correct Answer: aircraft
Correct Answer: Dead Sea
Correct Answer: 14
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