Sources Of Energy - MCQ Test (22-11-2017) - Class 10 MCQ

All given options are nonconventional source of energy.

Wind blows due to the differences in the air pressure which is caused due to heating effect of the sun on the earth unevenly which is inturn due to the rotation of the earth.

The angles are adjusted below such that the angles that the sun's rays reflect off the reflectors are the same as the angles that the sun's rays arrived at the reflectors. 

Because these sources of energy can be easily renewed with minimum effort and money, pollution free and eco friendly

A uranium-235 atom absorbs a neutron and fissions into two new atoms (fission fragments), releasing three new neutrons and some binding energy. 

If the products are poisonous then there will be a lot of pollution as a result of which everyone on the earth gets effects which inturn leads to the destruction of life.

1 amu = 931 MeV

=1396.5 MeV

Oxygen itself can not burn but whereas it helps in combustion. Oxygen is an oxidizer which helps in burning. For fuel to burn oxygen helps but where as the others -Methane, Butane, and hydrogen can be used as fuel

Solar heater works with the help of sunlight but on a Cloudy day there is no sunlight on earth as result of which solar heater will not work .

It is estimated that the gulf of Kutch in Gujarat can produce about 1200MW of power using the potential of tidal energy in India.

hydrogen bomb or H-bomb, weapon deriving a large portion of its energy from the nuclear fusion of hydrogen isotopes. In an atomic bomb, uranium or plutonium is split into lighter elements that together weigh less than the original atoms, the remainder of the mass appearing as energy.

LPG is a good fuel with high calorific value, burns with a smokeless flame, does not produce any poisonous gases on combustion and do not cause pollution

Black gold is an informal term for oil or petroleum - black because of its appearance when it comes out of the ground, and gold because it made everyone involved in the oil industry rich.

8 Km/h minimum is required to start rotating most small wind turbines. 12.6 to 15Km/h is the typical cut in speed when a small generator starts generating power.

Black surfaces absorb more radiation, i.e. more photons are converted to heat than lighter colors where the photons bounce off or are re-emitted.The trick for storage is to use a paint that is "black" in the visible spectrum where most of the incident energy is, but "white" in the infrared spectrum so energy doesn't get re-emitted when the panels heat up.

Neuclear energy and geothermal energy are not formed due to any action of solar energy

A candle flame consists of several different zones with different temperatures. Colors tell us the temperature of the flame.

• Outer zone
• Middle zone
• Inner zone

The outermost zone is the hottest among all zones and is blue in color, and this is due to complete combustion. It is the non-luminous part of the flame.
The middle zone of the candle flame is moderately hot and is yellow in color, and partial combustion of fuel takes place. It is bright part of the fire.
​The innermost zone of the flame is the least hot and is black in color. This is due to the presence of unburnt wax vapors.

Control rods are used in nuclear reactors to control the fission rate. Boron, silver, Indium and cadmium are capable of absorbing many neutrons without themselves fissioning, So they are used

Waves with a short wavelength have the most energy.. Here light source A has less wavelength. Red waves have a relatively long wavelength (in the 700 nm range), and violet waves are much shorter - roughly half that. Because violet waves have the shortest wavelength of the visible light spectrum, they carry the most energy.

Wood and Natural gas are the primary fuels that are found in nature and can be extracted, captured, cleaned or graded without any sort of enegy conversion or transformation processs.

Production of Atomic energy has no involvement of any type of biological activity.

Silicon, cadmium telluride, selenium are some elements used to  make solar cells.

Nuclear fusion creates more destruction than fission so statement A is false and solar energy helps in water cycle so statement B is true.

Coal and natural gas are burned to create the heat that is needed to produce steam. This heat creates creates pressure that turns the turbine

Denmark is Country of winds because of highly windy geographical area.

Atomic number is the number of protons present in the given element and can be calculated by subtracting neutrons from mass number

The energy released during nuclear fission or fusion, especially when used to generate electricity. This does not include any action of solar energy.

Solar energy is an universal unlimited and natural source of energy.

Geothermal energy is the heat from the earth. This energy is not derived by any of the action of the sun's energy. It originates from the earth itself.

A solar panel, or module, is a series of interconnected silicon cells(solar cells) joined together to form a circuit. In greater numbers the amount of power produced by these interconnected cells can be increased and used as an electricity production system.Solar panels come in different sizes for different purposes.