General Science-60

  1.     Which one of the following mechanisms uses the Pascal's law?

a.     The flight take-off

b.     The floating of ship

c.      The hydraulic brakes

d.     The landing of flight  

  2.     Which one among the following satellites is used to reflect the radio-signals back to the Earth?

a.     Natural satellite

b.     Active satellite

c.      Passive satellite

d.     None of these

  3.     Stars are twinkling due to

a.     Diffraction

b.    Refraction

c.      Scattering

d.     reflection

  4.     If we move from equator to pole, the value of g

a.     Increases

b.     Decreases

c.      remains same

d.     first increases then decreases

  5.     Which of the following has the most penetration power

a.     alpha-particles

b.     beta-particles

c.      gamma-particles

d.     X-rays

  6.     Which one of the following reactions is the main cause of the energy radiation from the sun?

a.     Fusion reaction

b.     Fission reaction

c.      Chemical reaction

d.     Diffusion reaction

  7.     In SONAR, we use

a.     ultrasonic waves

b.     infrasonic waves

c.      radio waves

d.     audible sound waves

  8.     Which of the following elements is the one required for solar energy conversion?

a.     Beryllium

b.    Silicon

c.      Tantalum

d.     Ultra Pure Carbon

  9.     Which of the following are the main components of the alloy Brass?

a.     Nickel and Copper

b.    Zinc and Copper

c.      Nickel and Zinc

d.     Nickel and Silver

  10.                        Which of the following chemicals is responsible for the depletion of Ozone layer in Earth’s atmosphere?

a.     Chlorofluorocarbons

b.     Nitrous Oxide

c.      Sulphur Dioxide

d.     Carbon Dioxide

  11.                        Permanent hardness of water can easily be softened by adding which of the following chemicals?

a.     Potassium Permanganate

b.     Chlorine

c.      Bleaching Powder

d.    Washing Soda

  12.                        What is the primary reason for absence of life on moon?

a.     Carbon

b.     Hydrogen

c.      Nitrogen

d.    Water

  13.                        Why is Sodium thiosulphate used in photographic processing of a film?

a.     Because it is an oxidizing agent

b.     Because it is a reducing agent

c.      Because it reacts with light

d.     Because it helps in fixing the photograph

  14.                        Sodium metal is usually kept under which of the following liquids?

a.     Water

b.     Alcohol

c.      Petrol

d.     Kerosene

  15.                        Which of the following metals is used to coat Galvanised iron sheets?

a.     Tin

b.     Lead

c.      Zinc

d.     Chromium

  16.                        Solar eclipse occurs under which of the following conditions?

a.     Earth comes between sun and moon

b.     Moon is at right angle to earth

c.      Moon comes between sun and earth

d.     Sun comes between moon and earth

  17.                        Which of the following gases is called as Marsh Gas?

a.     Hydrogen

b.     Nitrogen

c.      Methane

d.     Ethane

  18.                        Which of the following metals remains in a liquid form under normal conditions?

a.     Uranium

b.     Radium

c.      Mercury

d.     Zinc

  19.                        Bleaching powder is made from which of the following chemicals?

a.     Sulphur dioxide

b.     Chlorine and Charcoal

c.      Soda ash and lime

d.     Lime and chlorine

  20.     Which of the following gases is the gas that is filled in the electric bulb?

a.     Hydrogen

b.     Oxygen

c.      Nitrogen

d.     Carbon dioxide