Name the plant growth regulator which,when sprayed on sugarcane crops,increases the length of the stem and thus increases the yield of sugarcane.

The common bottle cork is a product of .......... .

For a ray of light,the critical angle is minimum when it travels from

The bond length of $HCl$ molecule is $1.275 \ \mathring{A}$ and its dipole moment is $1.03 \ D$. The ionic character of the molecule (in percent) (charge of the electron $= 4.8 \times 10^{-10} \ esu$) is

Which of the following pairs is incorrect?

If the altitudes of a triangle are in arithmetic progression,then the sides of the triangle are in