Abstract. Several pulsars show sudden cessation of pulsed emission, which is known as pulse nulling. In this paper, we are reporting nulling behaviour of 16 pulsars among which 6 were discovered recently in Parks Multibeam Survey and never reported any nulling behaviour. We are presenting some of the interesting nulling features of the few known nulling pulsars and also first time results on reduction in the pulsed energy during the null phase for all our samples. Fourier analysis has shown quasi-periodicity of nulling for few pulsars but no conclusive answer has been given till present date. To quantify the randomness of nulling pattern, we have applied few diehard randomness tests and compared obtained randomness with pulsar parameters to check for any correlations. We have also checked for any Hidden Markov Model (HMM) present in the null-burst length pattern.