Children and adolescents registered with confirmed diagnosis of cancer will be assessed for eligibility criteria and enrolled in the study. Subjects will be randomized into study and control groups using table of random numbers generated by computer. Sequentially numbered, opaque, sealed envelopes will be used for concealed allocation. After randomization, subjects will be interviewed 1 hour prior 1st dose of chemotherapy. Subjects will receive the antiemetic drugs for four days as per the allotted arm. All doses will be administered under supervision and 30 minutes before chemotherapy. The data will be collected from each patient from day 1 to day5 from the last dose of chemotherapy. The details will contain different items dealing with demographic and clinical characteristic of the subjects. A Diary will be maintained for nausea and vomiting episodes. It will help in collecting data regarding nausea, vomiting along with some additional variables like chemotherapy related toxicities, requirement of any rescue medication. The subjects will be given the diary for symptom assessment on day 1 and it will be filled up under the supervision of the investigator on day 1 till completion of chemotherapy. The diary will be given to the subjects following the completion of chemotherapy to record all the events (incidence and severity of nausea, vomiting, requirement of rescue medication and other toxicities ) and will be contacted by phone or in person by the investigator. Edmonton's symptom assessment criterion will be used in the diary for assessing severity of nausea. The NCI's CTCAEv4.03 criterion will be used to assess the severity of vomiting and adverse events based on the data provided by the patient in the diary. Patients/attendants will be explained about the filling of the diary and will maintain it for recording of vomiting. A modified intention-to-treat population will be used for efficacy analysis. Proportion of patients with CR during acute phase, delayed phase and overall period will be compared between the two arms.