खाली दिलेल्या रचनासूत्रासाठी आय.यू. पंक नावे लिहा :\(\text{CH}_3\text{–CH}\text{(OH)}\text{–CH}_3'\)
Arrange the following set of carbocations in order of decreasing stability.

Choose the correct answer from the options given below:
What is meant by functional group in carbon compounds? Write in tabular form the structural formula and the functional group present in the following compounds:
(a) Ethanol
(b) Ethanoic acid
In the following figure \(\triangle\) ABC, B-D-C and BD = 7, BC = 20, then find \(\frac{A(\triangle ABD)}{A(\triangle ABC)}\). 
The radius of a circle with centre 'P' is 10 cm. If chord AB of the circle subtends a right angle at P, find area of minor sector by using the following activity. (\(\pi = 3.14\)) 
Activity :
r = 10 cm, \(\theta\) = 90\(^\circ\), \(\pi\) = 3.14.
A(P-AXB) = \(\frac{\theta}{360} \times \boxed{\phantom{\pi r^2}}\) = \(\frac{\boxed{\phantom{90}}}{360} \times 3.14 \times 10^2\) = \(\frac{1}{4} \times \boxed{\phantom{314}}\) <br>
A(P-AXB) = \(\boxed{\phantom{78.5}}\) sq. cm.