The chloride of an element gives a neutral solution in water. To which group of the periodic table does this element belong?

An auditorium has a volume of $10^5 \ m^3$ and a total absorption area of $2 \times 10^4 \ m^2$. Its average absorption coefficient is $0.2$. The reverberation time of the auditorium in seconds is:

If the vectors $\overline{AB}=3 \hat{i}+4 \hat{k}$ and $\overline{AC}=5 \hat{i}-2 \hat{j}+4 \hat{k}$ are the sides of the triangle $ABC$,then the length of the median through $A$ is

Which of the following components provides a sticky character to the bacterial cell?

In a diffraction experiment from a single slit,the angular width of the central maxima does $NOT$ depend upon

For the given logic gate circuit, which of the following is the correct truth table?