<?xml version="1.0" encoding="US-ASCII"?>
<!-- EDGAR Online I-Metrix Xcelerate Taxonomy Schema, based on XBRL 2.1  http://www.edgar-online.com/ -->
<!-- Version: 6.20.1 -->
<!-- Round: 1 -->
<!-- Creation date: 2012-12-28T17:17:43Z -->
<!-- Copyright (c) 2005-2011 EDGAR Online, Inc. All Rights Reserved. -->
<schema xmlns="http://www.w3.org/2001/XMLSchema"
  xmlns:xbrli="http://www.xbrl.org/2003/instance"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:ck0000878092="http://www.dreyfus.com/20120831"
  xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric"
  xmlns:num="http://www.xbrl.org/dtr/type/numeric"
  xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
  xmlns:dei="http://xbrl.sec.gov/dei/2012-01-31"
  xmlns:rr="http://xbrl.sec.gov/rr/2012-01-31"
  targetNamespace="http://www.dreyfus.com/20120831"
  elementFormDefault="qualified" attributeFormDefault="unqualified">
  <annotation>
    <appinfo>
      <link:roleType roleURI="http://www.dreyfus.com/role/DocumentDocumentandEntityInformation" id="DocumentDocumentandEntityInformation">
        <link:definition>00101 - Document - Document And Entity Information {Elements}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/RiskReturn_S000000330Member" id="RiskReturn_S000000330Member">
        <link:definition>01102 - Document - Risk/Return Summary {Unlabeled} (Dreyfus AMT-Free Municipal Bond Fund)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/ShareholderFeesData_S000000330Member" id="ShareholderFeesData_S000000330Member">
        <link:definition>01103 - Schedule - Shareholder Fees</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/OperatingExpensesData_S000000330Member" id="OperatingExpensesData_S000000330Member">
        <link:definition>01104 - Schedule - Annual Fund Operating Expenses</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/ExpenseExample_S000000330Member" id="ExpenseExample_S000000330Member">
        <link:definition>01105 - Schedule - Expense Example {Transposed}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/ExpenseExampleNoRedemption_S000000330Member" id="ExpenseExampleNoRedemption_S000000330Member">
        <link:definition>01106 - Schedule - Expense Example, No Redemption {Transposed}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/BarChartData_S000000330Member" id="BarChartData_S000000330Member">
        <link:definition>01107 - Schedule - Annual Total Returns</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/PerformanceTableData_S000000330Member" id="PerformanceTableData_S000000330Member">
        <link:definition>01108 - Schedule - Average Annual Total Returns {Transposed}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/RiskReturn_S000000327Member" id="RiskReturn_S000000327Member">
        <link:definition>06110 - Document - Risk/Return Summary {Unlabeled} (Dreyfus BASIC Municipal Money Market Fund)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/ShareholderFeesData_S000000327Member" id="ShareholderFeesData_S000000327Member">
        <link:definition>06111 - Schedule - Shareholder Fees</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/OperatingExpensesData_S000000327Member" id="OperatingExpensesData_S000000327Member">
        <link:definition>06112 - Schedule - Annual Fund Operating Expenses</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/ExpenseExample_S000000327Member" id="ExpenseExample_S000000327Member">
        <link:definition>06113 - Schedule - Expense Example {Transposed}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/BarChartData_S000000327Member" id="BarChartData_S000000327Member">
        <link:definition>06114 - Schedule - Annual Total Returns</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/PerformanceTableData_S000000327Member" id="PerformanceTableData_S000000327Member">
        <link:definition>06115 - Schedule - Average Annual Total Returns {Transposed}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/RiskReturnDetailData_S000000327Member" id="RiskReturnDetailData_S000000327Member">
        <link:definition>06116 - Disclosure - Risk/Return Detail Data {Elements} (Dreyfus BASIC Municipal Money Market Fund)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/RiskReturn_S000002850Member" id="RiskReturn_S000002850Member">
        <link:definition>06117 - Document - Risk/Return Summary {Unlabeled} (Dreyfus High Yield Municipal Bond Fund)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/ShareholderFeesData_S000002850Member" id="ShareholderFeesData_S000002850Member">
        <link:definition>06118 - Schedule - Shareholder Fees</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/OperatingExpensesData_S000002850Member" id="OperatingExpensesData_S000002850Member">
        <link:definition>06119 - Schedule - Annual Fund Operating Expenses</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/ExpenseExample_S000002850Member" id="ExpenseExample_S000002850Member">
        <link:definition>06120 - Schedule - Expense Example {Transposed}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/ExpenseExampleNoRedemption_S000002850Member" id="ExpenseExampleNoRedemption_S000002850Member">
        <link:definition>06121 - Schedule - Expense Example, No Redemption {Transposed}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/BarChartData_S000002850Member" id="BarChartData_S000002850Member">
        <link:definition>06122 - Schedule - Annual Total Returns</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/PerformanceTableData_S000002850Member" id="PerformanceTableData_S000002850Member">
        <link:definition>06123 - Schedule - Average Annual Total Returns {Transposed}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dreyfus.com/role/RiskReturnDetailData_S000002850Member" id="RiskReturnDetailData_S000002850Member">
        <link:definition>06124 - Disclosure - Risk/Return Detail Data {Elements} (Dreyfus High Yield Municipal Bond Fund)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:href="ck0000878092-20120831_cal.xml" xlink:title="Calculation Links, all"/>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:href="ck0000878092-20120831_def.xml" xlink:title="Definition Links, all"/>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:href="ck0000878092-20120831_lab.xml" xlink:title="Label Links, all"/>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:href="ck0000878092-20120831_pre.xml" xlink:title="Presentation Links, all"/>
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/>
  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/>
  <import namespace="http://xbrl.sec.gov/dei/2012-01-31" schemaLocation="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/rr/2012-01-31" schemaLocation="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd"/>
  <element name="C000000809Member" id="ck0000878092_C000000809Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="C000000815Member" id="ck0000878092_C000000815Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="C000000817Member" id="ck0000878092_C000000817Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="C000000818Member" id="ck0000878092_C000000818Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="C000007813Member" id="ck0000878092_C000007813Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="C000046743Member" id="ck0000878092_C000046743Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="C000046744Member" id="ck0000878092_C000046744Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="C000073398Member" id="ck0000878092_C000073398Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="C000073399Member" id="ck0000878092_C000073399Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RRINDEX00001Member" id="ck0000878092_RRINDEX00001Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="S000000327Member" id="ck0000878092_S000000327Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="S000000330Member" id="ck0000878092_S000000330Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="S000002850Member" id="ck0000878092_S000002850Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareholderFeeOther2" id="ck0000878092_ShareholderFeeOther2" type="rr:NonNegativeMonetaryType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareholderFeeOther3" id="ck0000878092_ShareholderFeeOther3" type="rr:NonNegativeMonetaryType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryS000000327Member" id="ck0000878092_SummaryS000000327Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryS000000330Member" id="ck0000878092_SummaryS000000330Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryS000002850Member" id="ck0000878092_SummaryS000002850Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
</schema>
