MPSC Rajyaseva 2014 GS Paper 1 — Question 51
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अति लघु रेडिओतरंग भट्टीचे (2.45 GHz फ्रिक्वेन्सी) फायदे काय आहेत ? / What are the advantages of Microwave oven having microwave frequency of 2.45 GHz ?
(a)त्यामध्ये ज्वाला नाहीत / There are no flames
(b)पदार्थातील पौष्टिकता कमी प्रमाणात नष्ट होते / Destruction of nutrients is less
(c)अन्नपदार्थांमध्ये भौतिक बदल घडतो / There is a physical change in foods
(d)निर्जीनीकरण होते / Sterilization effected
Microwave ovens (2.45 GHz) operate without open flames, preserve nutrients better due to rapid heating, and effect sterilization. However, they cause chemical/structural changes rather than mere physical changes, making (c) incorrect.
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