Thursday, September 22, 2011

LABOUR OFFICER IN T.N.LABOUR SERVICE


LABOUR OFFICER IN T.N.LABOUR SERVICE
(Date of Examination:25.09.2011)

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Theorems based on circles and tangents


Definition: A straight line which touches a circle at only one point is called a tangent to the circle and the point at which it touches the circle is called its point of contact.
  • A tangent at any point on a circle is perpendicular to the radius through the point of contact.
  • Only one tangent can be drawn at any point on a circle. However, from an exterior point of a circle two tangents can be drawn to the circle.
  • The lengths of the two tangents drawn from an exterior point to a circle are equal.

General Knowledge Question and Answers, Chemistry – Part1


  • Lindane, also known as gamma hexachlorocyclohexane,gammaxeneGammallin and erroneously known as benzenehexachloride (BHC).
  • Dynamite was invented by Nobel.
  • Periodic table was given by Mendeleev.
  • Reduction is addition of Hydrogen.
  • Oxidation is addition of Oxygen.
  • The galvanized iron pipes are coated with Zinc.
  • Non-stick kitchenwares are coated with Teflon.
  • Gobar gas mainly contains methane.
  • The chief constituent of vinegar is Acetic acid.
  • The fibre least prone to catch fire is cotton.
  • Setting of plaster of paris involves dehydration process.

TNPSC EXAM Model Question Paper with Answer Keys Group-1, Group-2, VAO, Group-4, General Knowledge, Tamil, English, Downloads

For New TNPSC EXAM Group-2 Model Question Paper with Answers 


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TNPSC Original Question Paper


TNPSC Original Question Paper:

1. Density of matter is defined as
A. mass / volume
B. mass × volume
C. volume / mass
D. none of these

2. The resultant upthrust on a body partly immersed in liquid acts through
A. the centre of gravity
B. the metacentre
C. the centre of pressure
D. none of these

3. A transverse wave travels along z-axis. The particles of the medium travels along
A. z-axis C. y-axis
B. x-axis D. in x-y plane

4. Joule-Thomson cooling is
A. temperature dependent
B. temperature independent
C. dependent on the molecular
weight of the gas
D. dependent on the total mass of
the gas

5. The principle of action of points is used in
A. capacitors
B. inductors
C. resistors
D. lightning arrestors

6. A jet engine works under the principle of
A. mass
B. energy
C. linear momentum
D. angular momentum

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