Sardar Krushinagar Dantiwada Agricultural Uiversity 2010 Other Bachelor-university exam paper

Multiple option ques.
(For Competitive Exam)
Renewable Eneregy & Enviornmental Engineering


Harmful radiation emitted by the sun is ______.
Visible
Infra-red
Ultra-violet
Radio waves

A substance which produces a lot of heat on burning is called ______.
oxidising agent
biogas
biomass
fuel

Fuel formed under the earth's surface by the decomposition of organic matter is called ______.
organic fuel
biogas
fossil fuel
underground fuel

Which of the subsequent causes the lowest pollution when burnt?
Petrol
Diesel
Coal
Natural gas

The main constituent of LPG is ______.
methane
butane
hydrogen
propane

The main constituent of CNG is ______.
methane
butane
hydrogen
propane

Which of these is not a renewable source of energy?
The sun
Natural gas
Wind
Ocean tidal energy

The radiations absorbed by ozone layer are ______.
infra-red
ultra-violet
visible
gamma rays

The radiations emitted by a hot furnace are ______.
infra-red
ultra-violet
visible
X rays

The radiations emitted by the sun and responsible for the reason of skin cancer are ______.
infra-red
ultra-violet
visible
X rays

The efficiency of the solar cooker can be increased by placing a ______.
plane mirror
convex mirror
concave lens
convex lens

The maximum temperature that can be attained in a box-type solar cooker is ______.
200 oC
140 oC
80 oC
250 oC

A solar cell is made up of ______.
Silicon
titanium
magnesium
teflon

Which of the subsequent is not combustible?
oxygen
hydrogen
butane
methane

The lid of the solar cooker is made up of ______.
plastic sheet
black sheet
plane mirror
glass

In a solar panel, the metal used is ______.
gold
copper
silver
nickel

A solar cell converts ______.
heat energy into electrical energy
solar energy into electrical energy
heat energy into light energy
solar energy into light energy

Floating generators are used in the sea to harness ______.
tidal energy
wave energy
hydel energy
energy from OTEC power plant

The temperature difference ranging from the upper layers and the deeper layers of the ocean should be ______ to install an OTEC power plant.
40 oC
50 oC
20 oC
30 oC

The molten material mixed with gases in the mantle of the earth is called ______.
Core
Geyser
Lava
magma

Earning:   Approval pending.