Bond distance in \(HF\) is \(9.17\times10^{-11}\, m\). Dipole moment of \(HF\) is \(6.104\times10^{- 30}\, Cm\). The percentage ionic character in \(HF\) will be : .............. \(\%\) ( electron charge \(= 1.60\times10^{-19}\, C\))

The electronic configuration of \(\mathrm{Cu}\) (II) is \(3 \mathrm{d}^9\) whereas that of \(\mathrm{Cu}(\mathrm{I})\) is \(3 \mathrm{d}^{10}\). Which of the following is correct?

In an oligopeptide named Alanylglycylphenyl alanyl isoleucine, the number of \(sp ^2\) hybridised carbons is \(...........\).

Evaluate the following statements related to group \(14\) elements for their correctness. \((A)\)Covalent radius decreases down the group from \(\mathrm{C}\) to \(\mathrm{Pb}\) in a regular manner. \((B)\) Electronegativity decreases from \(\mathrm{C}\) to \(\mathrm{Pb}\) down the group gradually. \((C)\) Maximum covalence of \(\mathrm{C}\) is \(4\) whereas other elements can expand their covalence due to presence of \(d\) orbitals. \((D)\) Heavier elements do not form \(\mathrm{p} \pi-p \pi\) bonds. \((E)\) Carbon can exhibit negative oxidation states. Choose the correct answer from the options given below:

The ground state energy of hydrogen atom is \(-13.6\, eV\). The energy of second excited state of \(He^+\) ion in \(eV\) is

For the thermal decomposition of reaction AB(g), the following is constructed.

The half life of the reaction is 'x' min.
x =_________ min.(Nearest integer)

The compound that inhibits the growth of tumors is

Among the following basic oxide is .....

Main Products formed during a reaction of \(1-\)methoxy naphthalene with hydroiodic acid are :

Which structure of protein remains intact after coagulation of egg white on boiling?

One of the two identical conducing wires of length \(L\) is bent in the form of a circular loop and the other one into a circular coil of \(N\) identical turns. If the same current is passed in both, the ratio of the magnetic field at the central of the loop \((B_L)\) to that at the centre of the coil \((B_C),\); \(.\,\frac {B_L}{B_C}\) will be

Let \( (h, k) \) lie on the circle \( C: x^{2}+y^{2}=4 \) and the point \( (2h+1, 3k+2) \) lie on an ellipse with eccentricity \( e \). Then the value of \( \frac{5}{e^{2}} \) is equal to ___ .

The line, that is coplanar to the line \(\frac{x+3}{-3}=\frac{y-1}{1}=\frac{z-5}{5}\), is