An international bilateral Indo-Russian project is being supported by DST, Govt of India and RFBR, Russia aiming for the complex study of pulsation in A and F stars those discovered under the Nainital-Cape photometric survey. The current talk is based on the new results of spectroscopic study of three cool A stars with different rotational velocity. We have shown that chemical abundances of this programme objects are typical for delta Sct-type and metallic-line stars.