Which is mineral insulator

Q1. Which is mineral insulator? 

कौन सा खनिज इंसुलेटर है ?

(A) Glass/काँच 

(B) Quartz/क्वार्ट्ज़ 

(C) Mica/माईका 

(D) Porcelain/पोर्सलीन 

ANS: = (C) Mica/माईका 

Q2. What is the boiling point of mercury? 

(A) 357°C

(B) 280°C

(C) 759°C

(D) 767°C

ANS: = 356.7°C(357°C)

Q3. What is the boiling point of aluminium? 

(A) 1897°C

(B) 2519°C

(C) 2470°C

(D) 660°C

ANS: = (C) 2470°C

Q4. What is the maximum temperature that can be measured by mercury thermometer? 

वो अधिकतम तापमान जिसे मरक्युरी थर्मामीटर द्वारा मापा जा सकता है ?

(A) 400°C

(B) 300°C

(C) 356°C

(D) 100°C

ANS: = (C) 356°C

Details: - Mercury thermometers cover a wide temperature range from −37 to 356 °C, the instrument's upper temperature range may be extended through the introduction of an inert gas such as nitrogen.