Questions

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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 i.e. 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.

A place where bees are kept is called as an apiary.

Asian Development Bank (ADB) announced that it will assist the municipal agencies to improve quality of municipal schools through its School Excellence Programme (SEP).

Answer A is incorrect because it pertains to the processes. Answer C is incorrect because these are the five phases of a project. Answer D is incorrect because there are 39 processes, not knowledge areas.

1) G.V. Mavalankar (1952-56)

2) M.A. Ayyangar (1956-57 & 1957-62)

3) Hukam Singh (1962-67)

4) N. Sanjiva Reddy (1967-69)

5) Gurdial Singh Dhillon (1969-1971 & 1971-1975)

6) Bali Ram Bhagat (19976-77)

7) K.S. Hegde (1977-80)

8) Balram Jakhar (1980-1984 & 1984-1989)

9) Rabi Ray (1989-91)

10) Shivraj Patil (1991-96)

11) P.A. Sangma (1996-98)

12) G.M.C. Balayogi (1998-99 & 1999-2002)

 13) Manohar Joshi (2002-04)

14) Somnath Chatterjee (2004-09)

15) Meira Kumar (2009-14)

16) Sumitra Mahajan (2014-19)

17) Om Birla (2019 -)