Class 10 Sources Of Energy CBSE Questions & Answers

Class 10 · Sources Of Energy

Class 10 Sources of Energy CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
“Rotation of earth is responsible for wind to blow” is a
  • A
    Partially correct statement
  • B
    Incorrect statement
  • C
    Correct statement
    Correct
  • D
    Partially incorrect
2
A fuel would be regarded as ‘environment friendly’ if
  • A
    Its calorific value is less
  • B
    It produces large amount of ash
  • C
    Its combustion products are pollutant
  • D
    Its combustion products are non poisonous
    Correct
3
Which of the following is the potential site for harnessing tidal energy in India?
  • A
    Kalpakkam in Tamil Nadu
  • B
    Northern areas
  • C
    Gulf of kutch in Gujarat
    Correct
  • D
    Malabar coast
4
Which of the following nuclei are isotopes? , \({}_{88}^{226}A,{\rm{ }}{}_{87}^{228}B,{\rm{ }}{}_{88}^{228}C,{\rm{ }}{}_{90}^{228}D\)
  • A
    \({}_{88}^{226}A,{\rm{ }}{}_{88}^{228}C\)
    Correct
  • B
    \({}_{87}^{228}B,{\rm{ }}{}_{88}^{228}C\)
  • C
    \({}_{88}^{228}C,{\rm{ }}{}_{90}^{228}D\)
  • D
    Both \({}_{87}^{228}B,{\rm{ }}{}_{88}^{228}C\) and \({}_{88}^{228}C,{\rm{ }}{}_{90}^{228}D\)
5
To work properly, wind-electric generator’s need wind speeds of at least about-
  • A
    1500 km/h
  • B
    150 km/h
  • C
    15 km/h
    Correct
  • D
    1.5 km/h
6
Which of the following acts as control rods in Nuclear reactor?
  • A
    \({{\rm{D}}_{\rm{2}}}{\rm{o}}\)
  • B
    Both cadmium rod and Boron rod
  • C
    Boron rod
    Correct
  • D
    cadmium rod
7
For the nuclear fusion reaction to occur, the temperature should be of the order of
  • A
    \({\rm{1}}{0^{\rm{8}}}{\rm{k to 1}}{0^{\rm{9}}}{\rm{k}}\)
  • B
    \({\rm{1}}{0^{\rm{6}}}{\rm{k to 1}}{0^{\rm{6}}}.{\rm{5k}}\)
  • C
    \({\rm{1}}{0^{\rm{5}}}{\rm{k to 1}}{0^{\rm{6}}}{\rm{k}}\)
  • D
    \({\rm{1}}{0^{\rm{7}}}{\rm{k to 1}}{0^{\rm{8}}}{\rm{k}}\)
    Correct
8
Name any one element which is used in making solar cells.
  • A
    Selenium
    Correct
  • B
    Stannous
  • C
    Sulphur
  • D
    lead.
9
The mass number of an isotope of an element is 295, if its nucleus has 196 neutrons. What is its atomic number?
  • A
    99.0
    Correct
  • B
    491.0
  • C
    199.0
  • D
    98.0
10
Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the suns energy?
  • A
    Geothermal energy
    Correct
  • B
    Biomass.
  • C
    wind energy
  • D
    fossil fuels
11
What is the full from of OTEC
  • A
    Other traditional energy crisis
  • B
    Ocean thermal energy corporation
  • C
    Ocean themed energy cooperative
  • D
    Ocean thermal energy conversion
    Correct
12
Statement A : Oceans serve as the most potential source of renewable energy , Statement B : Energy from nuclear fusion creates more pollution than energy from nuclear fission
  • A
    Both the Statement A and B are not true
  • B
    Statement A is true, B is false
    Correct
  • C
    Statement B is true, A is false
  • D
    Both the Statement A and B are true
13
The value of solar constant is
  • A
    \({\rm{1}}.0{\rm{ kw}}/{{\rm{m}}^{\rm{2}}}\)
  • B
    \({\rm{1}}.{\rm{5 kw}}/{{\rm{m}}^{\rm{2}}}\)
  • C
    \({\rm{1}}.{\rm{4 kw}}/{\rm{ }}{{\rm{m}}^{\rm{2}}}\)
    Correct
  • D
    \({\rm{1}}.{\rm{6 kw}}|{{\rm{m}}^{\rm{2}}}\)
14
Which of the following factors is responsible for blowing of wind?
  • A
    All of these
    Correct
  • B
    Rotation of the earth
  • C
    local conditions
  • D
    greater heating of the region the equator compared to the regions near the poles
15
What is present contribution of hydro electric power stations to the electricity generated in India?
  • A
    \({\rm{41}}\% \)
  • B
    \({\rm{2}}0\% \)
  • C
    \({\rm{33}}\% \)
  • D
    \({\rm{23}}\% \)
    Correct