For the following questions answer them individually
At $$30°C$$, the half life for the decomposition of $$AB_2$$ is $$200 \text{ s}$$ and is independent of the initial concentration of $$AB_2$$. The time required for $$80\%$$ of the $$AB_2$$ to decompose is (Given: $$\log 2 = 0.30$$; $$\log 3 = 0.48$$)
Given below are two statements:one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Finest gold is red in colour, as the size of the particles increases, it appears purple then blue and finally gold.
Reason R: The colour of the colloidal solution depends on the wavelength of light scattered by the dispersed particles.
In the light of the above statements, choose the most appropriate answer from the options given below
The metal that is not extracted from its sulphide ore is
The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are
The metal complex that is diamagnetic is (Atomic number: Fe, 26; Cu, 29)

Consider the above reaction and predict the major product.
Hydrolysis of which compound will give carbolic acid?
The correct sequential order of the reagents for the given reaction is
Vulcanization of rubber is carried out by heating a mixture of
Animal starch is the other name of