Lok Sabha on Thursday approved the Union Budget envisaging an expenditure of around Rs 45 lakh crore for the fiscal year starting April 1 without any discussion, as the Opposition continued to create ruckus over demand for a JPC probe into allegations against the Adani Group. The lower house took up the Demands for Grants and Appropriation Bills after two adjournments as ruling and Opposition MPs engaged in a matching duet over demands for an apology by Rahul Gandhi and the Adani issue.