The following persons, and no others, who, if they are citizens of the United States over the age of twenty-one years and have the qualifications as to residence prescribed in section 178 of this article, shall be qualified to register as electors provided they shall not be disqualified under section 182 of this Constitution: those who can read and write any article of the Constitution of the United States in the English language which may be submitted to them by the board of registrars, provided, however, that no persons shall be entitled to register as electors except those who are of good character and who embrace the duties and obligations of citizenship under the Constitution of the United States and under the Constitution of the state of Alabama, and provided, further, that in order to aid the members of the boards of registrars, who are hereby constituted and declared to be judicial officers, to judicially determine if applicants to register have the qualifications hereinabove set out, each applicant shall be furnished by the board of registrars a written questionnaire, which shall be uniform in all cases with no discrimination as between applicants, the form and contents of which questionnaire shall be prescribed by the supreme court of Alabama and be filed by such court with the secretary of state of the state of Alabama, which questionnaire shall be so worded that the answers thereto will place before the boards of registrars information necessary or proper to aid them to pass upon the qualification of each applicant. Such questionnaire shall be answered in writing by the applicant, in the presence of the board without assistance, and there shall be incorporated in such answer an oath to support and defend the Constitution of the United States and the Constitution of the state of Alabama and a statement in such oath by the applicant disavowing belief in or affiliation at any time with any group or party which advocated the overthrow of the government of the United States or the state of Alabama by unlawful means, which answers and oath shall be duly signed and sworn to by the applicant before a member of the county board of registrars. Such questionnaire and the written answers of the applicant thereto shall be filed with the records of the respective boards of registrars. The board may receive information respecting the applicant and the truthfulness of any information furnished by him. Those persons who have registered as electors under the Alabama Constitution of 1901 shall not be required to register again. Provided, further, that if solely because of physical handicaps the applicant is unable to read or write, then he shall be exempt from the above stated requirements which he is unable to meet because of such physical handicap, and in such cases a member of the board of registrars shall read to the applicant the questionnaire and oaths herein provided for and the applicant's answers thereto shall be written down by such board member, and the applicant shall be registered as a voter if he meets all other requirements herein set out.