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A centrifugal pump impeller having 200 mm diameter runs at 600 r.p.m. The tangential velocity of the impeller is __________. 200 mm व्यास वाला एक अपकेन्द्री पम्प इम्पैलर 600 r.p.m.पर चलता है। इम्पैलर का स्पर्शरेखीय वेग ______ है–

प्राणी के शरीर के विभिन्न अंगों को बाँधे रखने का कार्यरूप है

Which of the following dances is performed by the Santhal tribe of Jharkhand?

Janjatiya Gaurav Divas was started from जनजातीय गौरव दिवस कब से शुरू किया गया?

मुखावयवों के निकट आने से संघर्ष के पश्चात् प्रकट होने वाली ध्वनि कौन-सी है?

फाइल के फेस के प्रथम कट को क्या कहते हैं?

According to perpendicular axis theorem, the moment of inertia about an axis zz, which is perpendicular to xx and yy is

शहतूत रेशम का अग्रणी उत्पादक भारतीय राज्य है-

A man rows from J to K (Upstream) and back from K to J (downstream) in a total time of 15 hours. The distance between J and K is 300 km. The time taken by the man to row 9 km downstream is identical to the time taken by him to row 3 km Upstream. What is the approximate speed of the boat in still water?

Q: A drum contains 80 litres of ethanol. 20 litres of this liquid is removed and replaced with water. 20 litres of this mixture is again removed and replaced with water. How much water (in litres) is present in this drum now ?

A. 45

B. 40

C. 35

D. 44

Correct Answer: Option C -

Explanations:

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