In self-contained chemical-oxygen self-rescuer, oxygen is produced by – McqOptions

MCQOPTIONS

1.	In self-contained chemical-oxygen self-rescuer, oxygen is produced by
A.	Hopcalite
B.	potassium peroxide
C.	sodium hydroxide
D.	Protosorb
Answer» C. sodium hydroxide

Discussion

No Comment Found

Related MCQs

<p>When a double ended ranging drum shearer cuts coal in a longwall face,</p>
<p>The three segments, whose synchronous functioning is essential for GPS operations, are</p>
<p>Apart from mining of coal, the longwall mining method has been practiced for mining the deposits<br /> of</p>
<p>Nystagmus is a miner’s disease associated with</p>
<p>A dump truck powered by 350 kW engine is running at a speed of 35 km/h. Considering the<br /> transmission efficiency of the truck as 85%, the rim pull of the truck in kN is</p>
<p>Equipment used in mining of placer deposits is</p>
<p>The roof bolt that follows the principle of point anchorage is</p>
<p>The equipment that is NOT used in hard rock metal mining drivage is</p>
<p>As per the Indian Electricity Rules 1956, the maximum permissible length of a flexible cable used<br /> with an electric rope shovel in m is</p>
<p>In a surface mine, sound pressure level at a location generated by operation of a dozer and a drill<br /> respectively are 80 dBA and 60 dBA, when operated independently. The sound pressure generated<br /> by the dozer compared to the drill is higher by a factor of</p>