MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
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Who invented the nuclear reactor?

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Important Questions on Scientists and Their Inventions

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?
MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 13
The spinning frame was invented by which of the following?
MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 14
Sodium was 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 15
Who is the father of blood transfusion?
MEDIUM
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 16
Safety matches were invented by whom?
EASY
Rajasthan RSMSSB Gram Vikas Adhikari VDO
IMPORTANT
OBJECTIVE GENERAL KNOWLEDGE For All Competitive Examinations>Chapter 10 - Scientists and Their Inventions>Exercise 1>Q 17
Radioactivity was discovered by: