A. Helium
B. Oxygen
C. Carbon dioxide
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 - Density in the solid state is slightly less than that in its liquid state, in case of____________________?
A. Carbon dioxide
B. Water
C. Mercury
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 - A solar cell converts the sunlight directly into ______________ energy?
A. Thermal
B. Electrical
C. Mechanical
D. Chemical - Heat flow across a hollow sphere of inner radius ‘r1’ and outer radius ‘r2’ is directly proportional to__________________?
A. (r2 – r1)/r1. r2
B. r1. r2/(r2 – r1)
C. (r2 + r1)/r1. r2
D. r1. r2/(r2 + r1) - ________________ is a special constituent of chlorophyll without which photosynthesis is not possible ?
A. Calcium
B. Nitrogen
C. Phosphorous
D. Hydrogen - The highest stress that a material can withstand for a specified length of time without excessive deformation is called the ____________ strength ?
A. Creep
B. Endurance
C. Fatigue
D. None of these - Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?
A. Emissivity of pipe surface
B. Diameter & length of the pipe
C. Temperature of hot pipe surface & that of air in the room
D. None of these - The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called__________________?
A. Resilience
B. Toughness
C. Ductility
D. Impact strength - The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the________________________?
A. Resilience
B. Toughness
C. Ductility
D. Impact strength
