Which of the following is the highest species-rich taxonomic group among animals?

If last year, there were 80 lotus plants in a lake. Then, 16 new lotus plants were added through reproduction and the current population is 96 now. The birth rate of lotus plant is

Identify the gene which is effective against corn borer.

Identify the hormone releasing IUD.

Match List-I with List-II

List-I (Techniques)	List-II (Related features)
(A) ELISA	(I) Production of mature insulin
(B) PCR	(II) Antigen-antibody interaction
(C) Autoradiograph	(III) Amplification of DNA
(D) Recombinant DNA technology	(IV) Photographic film

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An inverted pyramid of biomass can be found in:

HIV primarily destroys which cells of the immune system?

Observe the table and answer the given question :

How many amino acids have only two codons coding for them each ?

The reaction of aliphatic and aromatic primary amines with chloroform in the presence of ethanolic potassium hydroxide to produce compound with fouling smell, is known as

A sinusoidal voltage with peak value 220 V and variable frequency is applied to a series LCR circuit in which \( R = 10 \, \Omega \), \( L = 4 \, \text{mH} \), and \( C = 100 \, \text{mF} \). Consider the following:
(A) Resonant angular frequency \(\left(w_o\right)=50 rad / s\)
(B) Resonant frequency \(\left(v_o\right)=25 / n Hz\)
(C) Resonant frequency \(\left(v_o\right)=50 / n Hz\)
(D) The rms current at resonance is 15.5 A
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The area of the region bounded by the curve \(y^2=4 x\) and the lines \(y=2\) and \(x=0\) is:

The standard reduction potentials are given as:
\(\begin{array}{l}
E_{K^{+} / K}^{\circ}=-2.93 V \\
E_{Ag^{+} / Ag}^{\circ}=+0.80 V \\
E_{Cu^{2+} / Cu}^{\circ}=+0.34 V \\
E_{Ni^{2+} / Ni}^{\circ}=-0.25 V \\
E_{Li^{+} / Li}^{\circ}=-3.05 V
\end{array}\)
Arrange the following metals in increasing order of their reducing power:
A.K
B. Ag
C. Cu
D. Ni
E. Li
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Amines are reactive in nature, mainly due to difference in electronegativity between Nitrogen and Hydrogen and, due to lone pair of electrons on Nitrogen. Amines behave like nucleophiles and as good lewis bases and there are various reactions to support this. Different degree of amines differ in their reactivity due to steric hinderance and electronic effects. Aromatic amines are less basic due to + R effect, hence have higher pk value than aliphatic amines. Basic strength of amines also depends on stability of corresponding conjugate acid in aqueous medium.
Conjugate acid of which of the following amines is most stable?