question_data = `{
    "title": " Test 11 GOC Wave Propagation 5",
    "buttonText": "Klicka här för att rätta",
    "questions": [{
            "number": "1",
            "question": " A skip zone is: ",
            "correct": "b",
            "answer": [
                {
                    "label": "a",
                    "text": "the distance between the antenna and where the refracted wave first returns to earth "
                }, 
                {
                    "label": "b",
                    "text": "the distance between the far end of the ground wave and where the refracted wave first returns to earth "
                }, 
                {
                    "label": "c",
                    "text": "the distance between any two refracted waves "
                }, 
                {
                    "label": "d",
                    "text": "a zone caused by lost sky waves "
                }]
        }, {
            "number": "2",
            "question": "The medium which reflects high frequency radio waves back to the earth's surface is called the: ",
            "correct": "c",
            "answer": [
                {
                    "label": "a",
                    "text": "biosphere "
                }, 
                {
                    "label": "b",
                    "text": " stratosphere "
                }, 
                {
                    "label": "c",
                    "text": " ionosphere "
                }, 
                {
                    "label": "d",
                    "text": "troposphere  "
                }]
        }, {
            "number": "3",
            "question": " The highest frequency that will be reflected back to the earth at any given time is known as the:  ",
            "correct": "b",
            "answer": [
                {
                    "label": "a",
                    "text": " UHF "
                }, 
                {
                    "label": "b",
                    "text": "MUF  "
                }, 
                {
                    "label": "c",
                    "text": "OWF "
                }, 
                {
                    "label": "d",
                    "text": " LUF"
                }]
        }, {
            "number": "4",
            "question": " All communications frequencies throughout the spectrum are affected in varying degrees by the:  ",
            "correct": "d",
            "answer": [
                {
                    "label": "a",
                    "text": "atmospheric conditions  "
                }, 
                {
                    "label": "b",
                    "text": " ionosphere "
                }, 
                {
                    "label": "c",
                    "text": "aurora borealis "
                }, 
                {
                    "label": "d",
                    "text": "sun  "
                }]
        }, { 
            "number": "5",
            "question": " Solar cycles have an average length of:  ",
            "correct": "d",
            "answer": [
                {
                    "label": "a",
                    "text": "1 year  "
                }, 
                {
                    "label": "b",
                    "text": " 3 years "
                }, 
                {
                    "label": "c",
                    "text": "6 years  "
                },
                {
                    "label": "d",
                    "text": "11 years "
                }]
        }, {
            "number": "6",
            "question": "The 'skywave' is another name for the:  ",
            "correct": "a",
            "answer": [
                {
                    "label": "a",
                    "text": " ionospheric wave "
                }, 
                {
                    "label": "b",
                    "text": " tropospheric wave "
                }, 
                {
                    "label": "c",
                    "text": " ground wave "
                }, 
                {
                    "label": "d",
                    "text": "inverted wave  "
                }]
        }, {
            "number": "7",
            "question": " The polarisation of an electromagnetic wave is defined by the direction of:  ",
            "correct": "c",
            "answer": [
                {
                    "label": "a",
                    "text": " the H field "
                }, 
                {
                    "label": "b",
                    "text": "propagation "
                }, 
                {
                    "label": "c",
                    "text": " the E field "
                }, 
                {
                    "label": "d",
                    "text": " the receiving antenna "
                }]
        }, {
            "number": "8",
            "question": "That portion of HF radiation which is directly affected by the surface of the earth is called:   ",
            "correct": "b",
            "answer": [
                {
                    "label": "a",
                    "text": " ionospheric wave "
                }, 
                {
                    "label": "b",
                    "text": "local field wave "
                }, 
                {
                    "label": "c",
                    "text": "ground wave  "
                }, 
                {
                    "label": "d",
                    "text": " inverted wave "
                }]
        }, {
            "number": "9",
            "question": " Radio wave energy on frequencies below 4 MHz during daylight hours is almost completely absorbed by this ionospheric layer:  ",
            "correct": "b",
            "answer": [
                {
                    "label": "a",
                    "text": " C "
                }, 
                {
                    "label": "b",
                    "text": "D  "
                }, 
                {
                    "label": "c",
                    "text": " E  "
                }, 
                {
                    "label": "d",
                    "text": " F "
                }]
        }, {
            "number": "10",
            "question": "Because of high absorption levels at frequencies below 4 MHz during daylight hours, only high angle signals are normally reflected back by this layer:   ",
            "correct": "c",
            "answer": [
                {
                    "label": "a",
                    "text": " C "
                }, 
                {
                    "label": "b",
                    "text": " D"
                }, 
                {
                    "label": "c",
                    "text": "E "
                }, 
                {
                    "label": "d",
                    "text": " F  "
                }]
        }, {
            "number": "11",
            "question": "Scattered patches of high ionisation developed seasonally at the height of one of the layers is called:  ",
            "correct": "a",
            "answer": [
                {
                    "label": "a",
                    "text": "sporadic-E  "
                }, 
                {
                    "label": "b",
                    "text": "patchy  "
                }, 
                {
                    "label": "c",
                    "text": " random reflectors "
                }, 
                {
                    "label": "d",
                    "text": "trans-equatorial ionisation  "
                }]
        }, {
            "number": "12",
            "question": "For long distance propagation, the radiation angle of energy from the antenna should be:  ",
            "correct": "a",
            "answer": [
                {
                    "label": "a",
                    "text": "less than 30 degrees "
                }, 
                {
                    "label": "b",
                    "text": " more than 30 degrees but less than forty-five "
                }, 
                {
                    "label": "c",
                    "text": "more than 45 degrees but less than ninety  "
                }, 
                {
                    "label": "d",
                    "text": " 90 degrees "
                }]
        }, {
            "number": "13",
            "question": "The path radio waves normally follow from a transmitting antenna to a receiving antenna at VHF and higher frequencies is a:   ",
            "correct": "c",
            "answer": [
                {
                    "label": "a",
                    "text": "circular path going north or south from the transmitter  "
                }, 
                {
                    "label": "b",
                    "text": "great circle path  "
                }, 
                {
                    "label": "c",
                    "text": " straight line"
                }, 
                {
                    "label": "d",
                    "text": " bent path via the ionosphere"
                }]
        }, {
            "number": "14",
            "question": " A radio wave may follow two or more different paths during propagation and produce slowly-changing phase differences between signals at the receiver resulting in a phenomenon called: ",
            "correct": "c",
            "answer": [
                {
                    "label": "a",
                    "text": " absorption "
                }, 
                {
                    "label": "b",
                    "text": " baffling "
                }, 
                {
                    "label": "c",
                    "text": " fading "
                }, 
                {
                    "label": "d",
                    "text": " skip "
                }]
        }, {
            "number": "15",
            "question": "The distance from the far end of the ground wave to the nearest point where the sky wave returns to the earth is called the:   ",
            "correct": "d",
            "answer": [
                {
                    "label": "a",
                    "text": " skip distance "
                }, 
                {
                    "label": "b",
                    "text": "radiation distance  "
                }, 
                {
                    "label": "c",
                    "text": "skip angle  "
                }, 
                {
                    "label": "d",
                    "text": "skip zone  "
                }]
        }, {
            "number": "16",
            "question": " High Frequency long-distance propagation is most dependent on:  ",
            "correct": "a",
            "answer": [
                {
                    "label": "a",
                    "text": "ionospheric reflection  "
                }, 
                {
                    "label": "b",
                    "text": " tropospheric reflection "
                }, 
                {
                    "label": "c",
                    "text": " ground reflection "
                }, 
                {
                    "label": "d",
                    "text": " inverted reflection "
                }]
        }, {
            "number": "17",
            "question": " The layer of the ionosphere mainly responsible for long distance communication is: ",
            "correct": "d",
            "answer": [
                {
                    "label": "a",
                    "text": "C "
                }, 
                {
                    "label": "b",
                    "text": " D "
                }, 
                {
                    "label": "c",
                    "text": " E "
                }, 
                {
                    "label": "d",
                    "text": " F"
                }]
        }, {
            "number": "18",
            "question": " The ionisation level of the ionosphere reaches its minimum:  ",
            "correct": "b",
            "answer": [
                {
                    "label": "a",
                    "text": "just after sunset  "
                }, 
                {
                    "label": "b",
                    "text": "just before sunrise  "
                }, 
                {
                    "label": "c",
                    "text": "at noon  "
                }, 
                {
                    "label": "d",
                    "text": "at midnight  "
                }]
        }, {
            "number": "19",
            "question": "One of the ionospheric layers splits into two parts during the day called:   ",
            "correct": "d",
            "answer": [
                {
                    "label": "a",
                    "text": "A & B  "
                }, 
                {
                    "label": "b",
                    "text": " D1 & D2 "
                }, 
                {
                    "label": "c",
                    "text": " E1 & E2 "
                }, 
                {
                    "label": "d",
                    "text": " E1 & E2 "
                }]
        }, {
            "number": "20",
            "question": " Signal fadeouts resulting from an 'ionospheric storm' or 'sudden ionospheric disturbance' are usually attributed to: ",
            "correct": "d",
            "answer": [
                {
                    "label": "a",
                    "text": " heating of the ionised layers "
                }, 
                {
                    "label": "b",
                    "text": "over-use of the signal path  "
                }, 
                {
                    "label": "c",
                    "text": "insufficient transmitted power  "
                }, 
                {
                    "label": "d",
                    "text": "solar flare activity "
                }]
        }]
}`;