MPSC Rajyaseva 2021 GS Paper 1 — Question 67

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Carbon allotropes

खालील दिलेल्या विधानापैकी कोणती विधाने बरोबर आहेत ? / Which of the following statements are correct ?

(a)हिरा विद्युत दुर्वाहक आहे. / Diamond is a non-conductor of electricity.

(b)ग्रॅफाइट मध्ये द्विमितीय पत्रकासारखी संरचना असते. / Graphite has a two dimensional sheet like structure.

(c)ग्रॅफाइट विद्युत वाहक आहे. / Graphite conducts electricity.

(d)खडकाला भोक पाडायला हिरा वापरतात. / Diamond is used for rock drilling.

1)वरील सर्व / All of the above✓ Correct

2)फक्त (a), (b), (c) / Only (a), (b), (c)

3)फक्त (a), (b) / Only (a), (b)

4)फक्त (b), (c) / Only (b), (c)

Diamond is a non-conductor of electricity and is used in rock drilling; graphite has a two-dimensional sheet-like structure and is a good electrical conductor.

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