Match Column-I with Column-II and select the correct option. Column-I Column-II a) Sunflower i) Protogyny b) Castor ii) Self incompatibility c) Michellia iii) Protandry d) Orchid iv) Unisexuality
Half-life of first order reaction \(X \rightarrow Y + Z is 3 \text{ minutes.}\) What is the time required to reduce the concentration of X by 90% of its initial concentration?