The temperature at which a solid melts to become a liquid at atmo

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

241.

Energy in the form of heat is wasted when a machine is operated. This heat is generated due to ___________.

  • burning

  • friction

  • combustion

  • lubrication


242.

Acetic Acid is another name for which of the following?

  • Vinegar

  • Baking Soda

  • Copper Sulphate

  • Magnesium Oxide


243.

A ......... thread is actually stronger than a steel wire.

  • wool

  • cotton

  • jute

  • nylon


244.

The process of depositing a layer of any desired metal on another metal by means of electricity is called ...........

  • Electroplating

  • Galvanisation

  • Rusting

  • Crystallisation


Advertisement
245.

The salt concentration (measured as salinity in parts per thousand), is..........% in sea.

  • 10-20

  • 30-35

  • 40-50

  • 60-70


246.

A change in which one or more new substances are formed is called .................

  • Physical Change

  • Chemical Change

  • Rusting

  • Galvanisation


247.

The property of metals by which they can be beaten into thin sheets is called ................

  • ductility

  • malleability

  • viscosity

  • tensile strength


248.

The salt concentration (measured as salinity in parts per thousand), is greater than .............% in hypersaline lagoons.

  • 50

  • 100

  • 150

  • 200


Advertisement
Advertisement

249.

The temperature at which a solid melts to become a liquid at atmospheric pressure is called..........

  • crystallisation

  • melting point

  • evaporation

  • galvanisation


B.

melting point


Advertisement
250.

The melting point of ice is ............K.

  • 253.16

  • 263.16

  • 273.16

  • 283.16


Advertisement