1) Which property allows you to identify each design tool element by a unique name ? a) width b) id c) text d) hidden 2) Which of the following is not a design tool box element , that you can add to your screen in App Lab? a) image b) dropdown c) screen d) music 3) What are radio buttons used for? a) to enter the value b) select only one value c) select multiple values d) to generate an event 4) What is the use of random numbers in App Lab? a) to select a surprise number b) to select any number in a given range c) it gives a fixed number d) none of the above 5) What property is used to put the text content in the center of the screen? a) text alignment : center b) font size c) font family d) none of these 6) Which code block can be used to navigate from one screen to another? a) playSound b) onEvent c) setProperty d) setScreen 7) How you can add sound in App Lab? a) Select sound from the sound library b) Upload external sound file c) Record audio d) All of the above 8) Which of the following is not a UI element? a) chart b) photo select c) slider d) mouse 9) Which GUI element allows you to choose the images your device gallery? a) image b) canvas c) photo select d) none of these 10) What type of value is returned by the slider GUI element? a) number b) text c) boolean d) both number and text

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