The speed of a sound wave in a gas is analogous to the speed of ________?

For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is________?

Which of the following is not used as the ceramic material in „cermets‟?

Which of the following can be used for the direct measurement of volumetric flow rate of slurry?

pH value of H2SO4 (5% concentration) is________?

Optimum reaction temperature in steam reforming of naphtha is ________ °C?