Q. In Celsius scale, the temperature “Absolute zero” is equivalent to
(A) –273 °C
(B) 0 °C
(C) 100 °C
(D) 273 °C
The answer is: (A) –273 °C ☑
Q. The minimum speed required to leave the planet Earth (Escape Velocity) is _____ kilometer per hour.
(A) 20,000
(B) 30,000
(C) 40,000
(D) 50,000
The answer is: (C) 40,000 ☑
Q. Which metal is is vital and widely used in electricity industry?
(A) Iron
(B) Copper
(C) Graphite
(D) Lead
The answer is: (B) Copper ☑