What do bio-pesticides include?

The truth table for the system of four $NAND$ gates as shown in the figure is:

One die and a coin (both unbiased) are tossed simultaneously. The probability of getting $5$ on the top of the die and tail on the coin is

Amongst the given taxonomic aids,how many are associated with the preservation of specimens?
Monograph,Flora,Key,Museums,Botanical Gardens,Catalogue,Herbarium,Manual

Two cells $E_1$ and $E_2$ having equal e.m.f '$E$' and internal resistances $r_1$ and $r_2$ $(r_1 > r_2)$ respectively are connected in series. This combination is connected to an external resistance '$R$'. It is observed that the potential difference across the cell $E_1$ becomes zero. The value of $R$ will be

The pressure versus temperature graph of an ideal gas for equal number of moles at different volumes is plotted as shown in the figure. Choose the correct alternative.