Answer: A) The most commonly thought of hazard in construction. This hazard includes radiation, extreme temperatures, noise, and vibration. Explanation: A physical hazard is defined as "A factor within the environment that can harm the body without necessarily touching it." Vibration and noise are examples of physical hazards.   Physical hazards include but aren't limited to electricity, radiation, pressure, noise, heights and vibration amongst many others.

Answer: B) Mohammed Explanation: Mohammed or Mohammad is thought to be the most popular name in the world, given to an estimated 150 million men and boys.

Answer: A) Directive principle Explanation:

Answer: A) Sulphur dioxide Explanation: Air pollutants are solid particles, gases, and liquid droplets in the air that can adversely affect ecosystems and the health of humans.   Major ambient air pollutants include toxic metals, polycyclic aromatic hydrocarbons, benzene, particulate matter (PM), nitrogen oxides, sulfur oxides, carbon monoxide, and ozone. Power plants, factories, and vehicle and air traffic are the most important anthropogenic sources of air pollution.   In addition, natural sources such as wildfires and volcanic activity contribute to ambient air pollution.

Answer: A) It is set by multiple levels of the government. Explanation: General education policy is set by multiple levels of the government like Federal, state and local governments.

Answer: A) 416 Explanation: The given number series is  21 56 102 160 231 316   21      56       102        160      231       316         416    +35    +46       +58       +71      +85       +100         +11      +12       +13      +14      +15   Hence, the next number in the given number series is 316 + 100 = 416.

Answer: D) Agriculture Explanation: Agriculture would be a good example of a purely competitive industry.

Answer: A) CPU Explanation: Central Processing Unit (CPU) is the brain of any computer system.