• Inventions - Section 1
86. 

Who invented the battery?

A. John Wilkinson
B.

एलेसेंड्रो वोल्टा

C.

जेम्स हार्ज्रेव्स

D.

थॉमस एडिसन


87. 

Where were wigs first invented?

A. Japan
B.

फ्रांस 

C.

इजिप्ट 

D.

चीन 


88. 

The initials JCB on earth-moving equipment are those of the founder of the company that makes it. What is his name?

A. John Christopher Ballantyne
B.

जोसफ सायरिल  बामफोर्ड 

C.

जॉन क्रोस्फोर्ड बक्सटर 

D.

जैक क्रोस्फोर्ड बेकर 


89. 

When was Milk Tray first introduced?

A. 1915
B.

1934

C.

1923

D.

1942


90. 

When was the toothbrush invented?

A. 1770
B.

1765

C.

1790

D.

1742