Objective Science Questions Answers - 22 Aug 2014

1. _______________ is the chief constituent of gobar gas(Biogas).
[A]Propane
[B]Ethane
[C]Methane
[D]Chloride


2. The colour of violet glass is due to presence of ____________________.
[A]Manganese
[B]Chromiun
[C]Cobalt
[D]Nickel


3. _________________ is the combustible material on the tip of the saftey matchstick.
[A]Sulphur
[B]Antimony sulphide
[C]Phosphorous
[D]Manganese dioxide


4. What is the commercial name for calcium hydride?
[A]Lime
[B]Slaked lime
[C]Hydrolyth
[D]Calgon


5. The cyclotron is a device for ________________________.
[A]Producing protons
[B]Purifying metals
[C]Separating oil from water
[D]Accelerating particles