Added multiple questions (#3146)

git/git-quiz.md

@@ -835,3 +835,25 @@ Which of the following options is correct ?
 - [ ] Execute `git checkout -b <branchname>`.
 
 [Reference](https://stackoverflow.com/questions/1992364/git-recover-deleted-remote-branch)
+
+#### Q102. After checking your Git status, you get the following output, which shows the file beta-notes.js in the commit but also unstaged. How can this situation occur?
+
+```bash
+Changes to be committed:
+ (use "git reset HEAD <file>..." to unstage)
+
+  modified: beta-notes.js
+
+Changes not staged for commit:
+ (use "git add <file>..." to update what will be committed)
+ (use "git checkout -- <file>..." to discard changes in working directory)
+
+  modified: beta-notes.js
+```
+
+- [ ] There were two copies of beta-notes.js but one was deleted.
+- [ ] There are two tracked copies of beta-notes.js but one was removed from the commit.
+- [ ] Two copies of beta-notes.js were created, but only one is being tracked.
+- [x] beta-notes.js was staged, then modified afterwards, creating two different versions of the file.
+
+[Reference](https://stackoverflow.com/questions/24837841/can-a-file-be-both-staged-and-unstaged-in-git)

json/json-quiz.md

@@ -902,3 +902,47 @@ variance: -0.0823
 - [ ] "variance": "\-0.0823"
 
 [Reference data types in json](https://www.w3schools.com/js/js_json_datatypes.asp)
+
+### Q87. Based on the JSON object shown, which JavaScript code would you use to find out what is in this vehicle's glove box while assigning the glove box contents to a new variable?
+
+```js
+myVehicleContents = {
+  "van": {
+    "inside": {
+      "glove box": "maps",
+      "passenger seat": "crumbs"
+    },
+    "exterior": {
+      "trunk": "jack"
+    }
+  }
+}
+```
+
+- [ ] A
+
+```js
+myVehicleContents.van.inside["glove box"] = gloveBoxContents;
+```
+
+- [x] B
+
+```js
+var gloveBoxContents = myVehicleContents.van.inside["glove box"];
+gloveBoxContents;
+```
+
+- [ ] C
+
+```js
+var gloveBoxContents = myVehicleContents.van.glove box.contents;
+gloveBoxContents;
+```
+
+- [ ] D
+
+```js
+myVehicleContents.van.inside["inside"] = gloveBoxContents;
+```
+
+[Source](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_Objects)

php/php-quiz.md

@@ -976,3 +976,12 @@ Dog
       `while ($i < 10) {`
       ` echo ++$i . '<br/>';`
       `}`
+
+#### Q82. Which are types of control structures in PHP?
+
+- [x] `break`, `continue`, `do-while`, `exception`, `for`, `foreach`, `if`, `switch`, `throw`, `while`
+- [ ] `values`, `operators`, `expressions`, `keywords`, `comments`
+- [ ] `for`, `foreach`, `if`, `else`, `else if`, `switch`, `tries`, `throws`, `while`
+- [ ] `if-then-else`, `do-while`, `for-each`, `go-to`, `stop-when`
+
+[reference](https://www.php.net/manual/en/language.control-structures.php)