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Which of the following methods is used to remove hard salts like calcium and magnesium from water ? निम्नलिखित में से किस विधि का उपयोग पानी में से कैल्सियम और मैगनीशियम जैसे कठोर लवणों को हटाने के लिए उपयोग किया जाता है?
The rules made for the ______ were written down in a book called ‘Vinaya Pitaka’.
Which of the following states has the maximum area of Mangrove forest?
The average of the marks of 15 students in a class is 40. If the marks of each student are doubled, find the new average?/एक कक्षा में 15 विद्यार्थियों के अंकों का औसत 40 है। यदि प्रत्येक विद्यार्थी के अंक दोगुने कर दिए जाएँ, तो नया औसत ज्ञात कीजिए।
The water absorption (expressed in percentage) for burnt clay perforated bricks should not be more than ...........
Retardation means an object operates from.....
Explanations:
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