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Most widely used for producing IR source radiation-

_____ plays on important role in the daily life of a very large industry or human being. _____बहुत बड़े उद्योग या मनुष्य के दैनिक जीवन में महत्वपूर्ण भूमिका निभाता है। I. Material I. सामग्री II. Equipment and Techniques. II. उपकरण और तकनीक III. Unskilled labor. III. अकुशल श्रम

If the half life of Radium D is 22 years then it will decrease to 10% in _______ years अगर रेडियम D की अर्द्धआयु 22 वर्ष है तब उसे 10% तक घटने में ________ वर्ष लगेंगे।

Select the option in which the words share the same relationship as that shared by the given pair of words. Examination : Invigilator

Pipe A can fill a tank in 6 hours. Pipe B can fill the same tank in 8 hours. Pipe A, B and C together can fill the same tank in 12 hours. Then which of the following statements is true for pipe C?