Which from the following is true for 'Sound'?Sound cannot pass through ---.

PSC CGDF – Junior Auditor BCS 16th BCS Preli - 1994 37th BCS Preli - 2016 DPE Primary Head Teacher - 2009 Primary Teacher Pre-Primary Teacher - 2013 MoCAT Administrative Officer - 2005 BD POST Postal Operator - 2016 IFIC IFIC Officer - 2019 CGDF – Junior Auditor - 2022 সাধারণ বিজ্ঞান শব্দ সঞ্চারণ (Propagation of Sound)

PSC BD POST Postal Operator BCS 16th BCS Preli - 1994 37th BCS Preli - 2016 DPE Primary Head Teacher - 2009 Primary Teacher Pre-Primary Teacher - 2013 MoCAT Administrative Officer - 2005 BD POST Postal Operator - 2016 IFIC IFIC Officer - 2019 CGDF – Junior Auditor - 2022 সাধারণ বিজ্ঞান শব্দ সঞ্চারণ (Propagation of Sound)

PSC MoCAT Administrative Officer BCS 16th BCS Preli - 1994 37th BCS Preli - 2016 DPE Primary Head Teacher - 2009 Primary Teacher Pre-Primary Teacher - 2013 MoCAT Administrative Officer - 2005 BD POST Postal Operator - 2016 IFIC IFIC Officer - 2019 CGDF – Junior Auditor - 2022 সাধারণ বিজ্ঞান শব্দ সঞ্চারণ (Propagation of Sound)

PSC BMET Assistant Director BCS 13th BCS Preli - 1992 BPO Upazila Postmaster - 2010 25th BCS Preli - 2004 Primary Teacher Pre-Primary Teacher - 2013 DPE Primary Head Teacher - 2012 BMET Assistant Director - 2001 Primary Assistant Teacher - 2018 DOL Assistant Labour Officer - 2003 Various Depts – Personal Officer (General) - 2018 MOFA – Superintendent - 2019 DOA – Assistant Custodian/Research Assistant - 2023 DGHS – NMEP Technician - 2023 BPSC – NIPORT – Home Economist - 2024 BUET PGCB – Sub-Assistant Engineer - 2024 DMLC – Junior Teacher - 2025 IBBL IBBL Officer - 2005 ACC – Constable - 2025 সাধারণ বিজ্ঞান শব্দ সঞ্চারণ (Propagation of Sound)

Primary Teacher Pre-Primary Teacher BCS 16th BCS Preli - 1994 37th BCS Preli - 2016 DPE Primary Head Teacher - 2009 Pre-Primary Teacher - 2013 PSC MoCAT Administrative Officer - 2005 BD POST Postal Operator - 2016 IFIC IFIC Officer - 2019 CGDF – Junior Auditor - 2022 সাধারণ বিজ্ঞান শব্দ সঞ্চারণ (Propagation of Sound)

DPE Primary Head Teacher BCS 16th BCS Preli - 1994 37th BCS Preli - 2016 Primary Head Teacher - 2009 Primary Teacher Pre-Primary Teacher - 2013 PSC MoCAT Administrative Officer - 2005 BD POST Postal Operator - 2016 IFIC IFIC Officer - 2019 CGDF – Junior Auditor - 2022 সাধারণ বিজ্ঞান শব্দ সঞ্চারণ (Propagation of Sound)