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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. French Revolution was started in the Year ?
Options- A. 1786
- B. 1787
- C. 1788
- D. 1789 Discuss
- 2. ...................was conferred Sahitya Akademi Award for his poetry book Khara Zaran
Options- A. Mr. Chinu Modi
- B. Robin Sharma
- C. Gunvant Shah
- D. Narendra kohli Discuss
- 3. Which would usually be studied by a geologist?
Options- A. Plants
- B. Insects
- C. Earth
- D. Life Discuss
- 4. Most stars are at what point in their life cycles?
Options- A. Supernova
- B. Protostar
- C. Red Giant
- D. Main Sequence Discuss
- 5. Laterite soils contain high amounts of
Options- A. Calcium carbonate
- B. Silicates
- C. Calcites
- D. Iron oxide Discuss
- 6. Collisions occur at curves because
Options- A. speed on the approach is too great
- B. speed leaving the curve is not enough
- C. speed leaving the curve is too great
- D. speed on the approach is not enough Discuss
- 7. Name the India's highest award which is given to a civilian
Options- A. Bharat Ratna
- B. Param Vir Chakra
- C. National Film Award
- D. Jananpeth Award Discuss
- 8. Who was discovered Oxygen?
Options- A. John Dalton
- B. Thomas Moore
- C. Lavoisier
- D. Joseph Priestley Discuss
- 9. Name the film which won 11 Oscars at the 76th Annual academy Awards
Options- A. The lord of Rings:The return of the kings
- B. Mystic River
- C. Cold Mountain
- D. Monster Discuss
- 10. Red Data Book contains
Options- A. Rare minerals
- B. Vanishing rivers
- C. Red pandas
- D. Rare plants & animals under threat Discuss
More questions
Correct Answer: 1789
Correct Answer: Mr. Chinu Modi
Correct Answer: Earth
Explanation:
A geology is a branch of science that deals with the study of Earth, its structure and materials made it. And the person who studies this is called as Geologist.
Correct Answer: Main Sequence
Correct Answer: Iron oxide
Explanation:
Laterite soils are a tropical soil and possess a great amount of iron and aluminum. Due to its high iron oxide content they look like rusty-red coloration.
Correct Answer: speed on the approach is too great
Correct Answer: Bharat Ratna
Correct Answer: Joseph Priestley
Correct Answer: The lord of Rings:The return of the kings
Correct Answer: Rare plants & animals under threat
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