Questions

The population increases in geometrical progression and has crossed the 5 billion mark. The united nations estimate an average growth rate of 1.5% per annum.

An interrupt which can be never be turned off (ie. disabled) is known as Non-Maskable interrupt

The main task of Software Quality Assurance Group is to examine the overall s/w development process and to create and enforce standards and methods to improve it with the goal of preventing bugs from ever occurring. With this definition, it is imperative that the QA helps an organization in continuous performance improvement and strive for perfection.

Oxygen crosses a plasma membrane by Osmosis.

Metamorphism is the method of changing the structure of a rock by using heat and temperature.

Hence, for this to happen the parent rock must be in solid form only. Therefore, option C) is true.

Joseph Priestley and Carl Wilhelm Scheele both independently discovered oxygen in the year 1774, but Priestly is usually given credit for the discovery.

Electronic Flash differs from the consumable bulb flash in important aspects. Instead of creating light by burning up in an atmosphere containing oxygen, a consumable material (each bulb being used therefore only once), it produces a brilliant incandescent by discharging a current for a brief instant through a rarified gas, usually xenon. The gas glows every time the discharge is made through it but it is not consumed, so that many thousands of flashes are obtainable from a single tube, which helps to offset the much higher cost of the initial apparatus.