A. Carbon dioxide
B. Water
C. Mercury
D. None of these
Correct Answer: Water ✔
Last Updated: February 10, 2019
Related MCQs
- Starting friction is low in case of the __________ lubrication?
- Large scale fire on fuel gas line is normally extinguished by__________?
- Which of the following metals is not subjected to electrolytic refining/purification ?
- Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism?
- Temperature attained in soldering of metals is about __________ °C?
- Which of the following are considered applications of ultrasonic testing ?
- Most important property of steels for use in automobile bodies is the__________?
- Preheating before welding is done to__________?
- The product of a commercial direct reduction process is__________?
- A 2 kg object weighs 1.8 kgf on a spring balance. The value of ‘g’ at that location in m/sec2 is__________?
- When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively__________?
- Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used ?
- Consideration of the creep is the most important in case of the__________?
- Fine grained steels have__________?
- If Reynolds number is greater than 1, then the__________?
- Normalising of an object does not__________?
- As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 meters from the source of noise?
- The delivery pressure of boiler feed water pump compared to the boiler steam pressure is__________?
- The trace metal present in insulin is__________?
- For a first order chemical reaction, the concentration of the reactant decreases __________ with time?
- High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent ?
- Capacity & power requirement for an air compressor working at high altitude compared to sea-level will be__________?
- Globular form of cementite is formed during the __________ process ?
- The burnout heat flux in the nucleate boiling regime is not a function of the__________?
- Use of water as a manometric liquid suffers from the disadvantage of its__________?
- Iron content in Indian iron ore is about __________ percent?
- Shrinkage allowance on pattern is provided to compensate for shrinkage when the __________?
- __________ of austenite decreases the hardenability in steel ?
- Desalination of water__________?
- __________ is a non volatile film forming constituent of a paint ?
- The mechanism involved in the removal of metal in drilling operation is by__________?
- Out of the following __________ iron has the best capability to bear sudden & excessive shocks?
- Which one is neutral in character ?
- The normal stress is the same in all directions at a point in a fluid, only when the fluid__________?
- Hot extrusion of aluminium is done in the temperature range of __________ °C ?
- Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm?
- What is the pH of distilled water ?
- Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as__________?
- Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay ?
- Which of the following mainly decides the current to be employed is arc welding ?
- Main constituent of bone ash is__________?
- Isotropic materials have the same __________ in all directions?
- Projection welding & stud welding is categorised as the __________ welding?
- The following thermocouple may be used for measuring temperature upto 1873°K__________?
- Drossing is a __________ operation?
- Lead pencil contains__________?
- Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process ?
- The underground well of a bio gas plant is called the__________?
- A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm2 ?
- Water hammer is caused in steam carrying pipelines, because of __________?
- In the diving apparatus, helium is used along with oxygen, because it is __________?