The phosphate of a metal has the formula $MHPO_4$. The formula of its chloride would be

$A$ capacitor of capacity $0.1 \mu F$ connected in series to a resistor of $10 M \Omega$ is charged to a certain potential and then made to discharge through the resistor. The time in which the potential will take to fall to half its original value is (Given,$\log _{10} 2=0.3010$ ) (in $~s$)

$\int_0^{\frac{\pi}{4}} \frac{\cos ^2 x}{\cos ^2 x+4 \sin ^2 x} d x=$

Which type of circulatory system is shown in the given figure?

The temperature at which a real gas obeys ideal gas laws over an appreciable range of pressure is called:

Which type of glass is used in the manufacturing of lenses and prisms?