# Drishti General Science And Science & Technology

## Drishti General Science And Science & Technology

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### General science question and answer

स्ट्रोबोस्कोप

कि.मी./मिनट
कि.मी./मिनट
कि.मी./मिनट

D) जॉनसन

#### 14. मनुष्य के सुनने की क्षमता कितनी होती है ?

20 Hz से 2000 Hz
20 Hz से 20000 Hz
20000 Hz से अधिक
200 Hz से 20000 Hz

ANSWER= (B) 20 Hz से 20000 Hz

C) जॉन डाल्टन

C) उपरोक्त दोनों

#### 22. फ्लोरोसेंट लैंप में चोक के उपयोग का मुख्य उद्देश्य क्या है ?

ANSWER= (A) विद्युत धारा के प्रभाव को कम करना

#### 28. ऑक्सीजन की खोज किसने की थी ?

ANSWER= (D) A और B दोनों

#### 29. निम्नलिखित में से कितनी ऊंचाई पर ऑक्सीजन की मात्रा नगण्य होगी ?

General Science Notes

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