अम्ल, क्षार और लवण प्रश्न 29
प्रश्न: निम्नलिखित में से कौन-सा पदार्थ बहुत कठोर और बहुत लचीला है?
विकल्प:
A) कार्बोरंडम
B) टंगस्टन
C) ढलवा लोहा
D) नाइक्रोम
Show Answer
उत्तर:
सही उत्तर: D
BETA
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