diff --git a/README.md b/README.md
index 648903c..d50bd27 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,12 @@ This is a smart Quiz Generator that generates a dynamic quiz from any uploaded t
 ## WorkFlow
 ![workflow](https://user-images.githubusercontent.com/42115530/95686207-1111e300-0c1a-11eb-993a-766967b91c92.png)
 
+## Demo Video
+<a href="https://youtu.be/74RrpcO89E0" target="_blank" rel="noopener">
+  <img src="https://user-images.githubusercontent.com/42115530/95742312-6c40e580-0cad-11eb-89a5-c2ee099bf8d7.png" alt="MLH-Quizzet"
+	title="MLH-Quizzet" width="400px" />
+</a>
+
 ## Technology Stack:
 
 
diff --git a/app.py b/app.py
index cd0c826..437d494 100644
--- a/app.py
+++ b/app.py
@@ -12,9 +12,6 @@ UPLOAD_FOLDER = './pdf/'
 app = Flask(__name__)
 app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
 
-# Global quiz object
-questions = dict()
-
 
 @ app.route('/')
 def index():
@@ -27,6 +24,7 @@ def quiz():
     """ Handle upload and conversion of file + other stuff """
 
     UPLOAD_STATUS = False
+    questions = dict()
 
     # Make directory to store uploaded files, if not exists
     if not os.path.isdir('./pdf'):