MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
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Who invented the polio vaccine (oral)?

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Important Questions on Scientists and Their Inventions

EASY
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 5
Who developed the smallpox vaccination?
MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 6
The steam engine was invented by whom?
MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 7
Who invented the revolver?
MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 8
Who invented the refrigerator?
MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 9
Who invented the nuclear reactor?
MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 10
The four blood groups were discovered by whom?
MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 11
The electrocardiograph was invented by whom?
MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 12
The stethoscope was invented by which of the following?