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QUESTION BANK

7th Std

8th Std

9th Std

10th Std

TEXT BOOKS – NCERT

6th Std

7th Std

8th Std

9th Std

KNOWLEDGE HUB

The part of the solar cooker that reflects the radiations is Plane mirror, The main disadvantage of solar devices is Low efficiency, During proton-proton chain reaction two nuclei fuse into one helium, The color used in painting the inside surface of the solar devices like solar cooker is Black, Solar devices are classified into different types based on their principle of working, We receive the solar energy in the form of Heat and Light, The energy radiated by the sun per second is 4 x 1026 J/s, The type of the mirrors used in solar water heater are concave or Parabolic, The concave mirrors are used in solar water heater because to absorb more radiations in small area, The form of energy used to run the traditional boats is Wind Energy, The natural transformation of solar energy that is fast depleting is Energy in fossil fuels ,

 

The natural transformation of solar energy that supports life on earth is Energy in Food, According to Bethe, hydrogen nuclei form to provide Helium nuclei is the source of solar energy, In typical solar cell, the material that absorbs light energy is made up of Silicon, The solar device used in traffic lights is Solar Cell, An example of solar device that converts light energy into electrical energy is Solar cell, An example of a solar device that directly absorbs heat is Solar cooker, The solar cells are made up of semi conductors silicon and Germanium, The capacity to do work is called Energy, The SI unit of energy is Joule, 1 Calorie is equal to 18 Joules,

 

The energy sources that do not depleted on their continuous use are called Renewable sources , The energy sources that get depleted on their continuous use are called non Renewable sources, The perennial source of energy is Solar Energy, The situation arising out of energy demand for exceeding its supply is called Energy Crisis, The type of lights which are more energy efficient are fluorescent Lamps, The transmission loss of electrical energy in our country is about 20 to 40%, A bio waste material is Animal dung, The device which gives biogas from biomass is called Biogas Plant, The energy consumed in India as a percentage of the total energy consumption of the world is 3%, The acute shortage of energy due to ever increasing demand is called Energy Crisis, To avert energy crisis we must encourage the use of mass transport system, To avert energy crisis we must use renewable source of energy

10th Std

QUESTION PAPERS – SAT

2017

NMMS – SAT

KEY ANSWERS

2017

NTSE – SAT

KEY ANSWERS

2016

NMMS – SAT

KEY ANSWERS

2016

NTSE – SAT

KEY ANSWERS

2015

NMMS – SAT

KEY ANSWERS

2015

NTSE – SAT

KEY ANSWERS

2014

NTSE – SAT

KEY ANSWERS

2014

NMMS – SAT

KEY ANSWERS

2013

NMMS – SAT

KEY ANSWERS

2013

NTSE – SAT

KEY ANSWERS

2012

NMMS – SAT

KEY ANSWERS

2012

NTSE – SAT

KEY ANSWERS

2011

SAT

KEY ANSWERS

2009

SAT

KEY ANSWERS

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