A. Carbon dioxide
B. Water
C. Mercury
D. None of these
Related Mcqs:
- Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?
A. °C
B. °F
C. °K
D. °R - If a solid is compressed adiabatically in its elastic range, its _____________ remains constant ?
A. Internal energy
B. Enthalpy
C. Entropy
D. Temperature - Which one can be directly solidified from gaseous state without entering into liquid state ?
A. Helium
B. Oxygen
C. Carbon dioxide
D. None of these - Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at________________?
A. High vacuum
B. Zero pressure
C. 0°K
D. Earth’s centre - Diffusion co-efficient of a metal in a solid solution depends upon its ?
A. Composition
B. Temperature
C. Both A. & B.
D. Neither A. nor B. - ‘Cryogenics’ is concerned with the generation & use of low temperature in the range of____________________?
A. 0°K to 123°K
B. 0°C to – 123°C
C. 0°C to – 273°C
D. 0°K to 273°K - Stainless steel is welded with difficulty because of____________________?
A. Its high melting temperature
B. Chances of cracking
C. Oxide film formation
D. Chromium carbide formation - L.D. (Linz-Donawitz) converter is used in the production of____________________?
A. Copper
B. Steel
C. Zinc
D. Aluminium - Insulation of liquid surface can be achieved by _____________ on top of its surface?
A. Floating hollow polypropylene spheres
B. Spraying alumina powder
C. Putting cement
D. None of these - The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be________________?
A. 3171Pa
B. 3567Pa
C. 1.01 × 105Pa
D. 5000Pa
