Friday, September 28, 2012

General Science and Economics

                                                               General Science

 

  1. In SONAR, we use.                             

-          Ultrasonic Waves.

 

  1. Which reaction is the main cause of the energy radiation from the Sun?

-          Fusion Reaction.

 

  1. Which agent is added to domestic LPG cylinder to help in the detection of gas leakage?

-          Thioethanol.

 

  1. Which polymer is used to make personal armour such as combat helmets, ballistic face masks and ballistic vests?

-          Kevlar

 

  1. In modern days, which chemical compounds is used for the hair setting in beauty parlours / salons?

-          A Sulphur Compound.

 

  1. The coil in a heater is mode of.

-          Nichrome.

 

  1. Which type of organisms do mushrooms belong?

-          Fungi.

 

  1. The pH of human blood is normally around.

-          7.5 to 8.0

 

  1. Which vitamin is necessary for blood clotting?

-          Vitamin – K

 

  1. Which gas is used to ripen to fruits artificially?

-          Acetylene.

 

  1. Contact lenses are made from.

-          Lucite.

 

  1. 'The stars seem to be higher on the sky than they actually are'. This can be explained by.

-          Atmospheric Refraction.

 

  1. When a moving bus suddenly applies brakes, the passengers sitting in it fall in the forward direction. This can be explained by.

-          Newton's First Law.

 

  1. Which type of acid is produced by the human stomach in digestion of food?

Hydrochloric Acid.

 

  1. Which organ in human body break fat to produce cholesterol?

-          Liver.

 

  1. In the human body, red blood cells are produced in.

-          Bone Marrow.

 

  1. Which enzyme is found in human saliva?

-          Ptyalin.

 

  1. Itching due to insect bite it cause by.

-          Formic Acid.

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