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RPF Constable General Study Test - 23
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RPF Constable General Study Test - 23
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  • Question 1/10
    1 / -0

    The strongest force in nature is -

    Solutions

    Strong nuclear force is the strongest force. It is present inside the atom responsible for binding the protons and neutrons and also inside the proton and neutron in binding up the quarks.

     

  • Question 2/10
    1 / -0

    Electric current in a metal wire is due to the flow of -

    Solutions

    An electric current is a flow of electric charge which is often carried by moving electrons.

     

  • Question 3/10
    1 / -0

    Good conductor of electricity is -

    Solutions

    Graphite is soft and slippery because there are only weak inter molecular forces between its layers. Graphite is a good conductor of heat and electricity.

     

  • Question 4/10
    1 / -0

    Which of the following material is used in the solar panel ?

    Solutions

    Silicon is a semiconductor material. When it is doped with the impurities gallium and arsenic its ability to capture the sun's energy and convert it into electricity. Hence it is used in Solar cells.

     

  • Question 5/10
    1 / -0

    Which of the following is not an example of Allotrope?

    Solutions

    Diamond and Graphite are allotrope of Carbon while ozone is an allotrope of oxygen. Steel is an alloy of iron and carbon with trace amounts of other elements.

     

  • Question 6/10
    1 / -0

    Which acid is released when an Ant bites?

    Solutions

    The acid produced by ants is called formic acid.The name comes from the Latin word for ant, which is “formica.” Chemically, it is a simple carboxylic acid.

     

  • Question 7/10
    1 / -0

    Which among the following is the major cause of acid rain?

    Solutions

    Acid rain results when sulfur dioxide (SO2) and nitrogen oxides (NOX) are emitted into the atmosphere and transported by wind and air currents. The SO2 and NOX react with water, oxygen and other chemicals to form sulfuric and nitric acids. These then mix with water and other materials before falling to the ground.

     

  • Question 8/10
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    What is an endothermic reaction?

    Solutions

    The term endothermic process describes a process or reaction in which the system absorbs energy in the form of heat.

     

  • Question 9/10
    1 / -0

    Cinnamon is obtained from which part of the plant?

    Solutions

    Cinnamon is a spice obtained from the inner bark of several tree species from the genus Cinnamomum. Cinnamon is used mainly as an aromatic condiment and flavoring additive in a wide variety of cuisines, sweet and savoury dishes, breakfast cereals, snack foods, and traditional foods.

     

  • Question 10/10
    1 / -0

    Which among the following carries impure blood from human heart?

    Solutions

    The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs.

     

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