An organism which can monitor air pollution is
(a) Bacteria
(b) Lichen
(c) Fungi
(d) Algae
Answer:
Ozone hole is due to release of
(a) CFCs
(b) SO2
(c) PAN
(d) NO2
Answer:
Kilowatt is a unit to measure
(a) Current
(b) Electricity
(c) Work
(d) Power
Answer:
SI unit of temperature is
(a) Fahrenheit
(b) Joule
(c) Celsius
(d) Kelvin
Answer:
Which of the following substances has greatest specific heat?
(a) Mercury
(b) Copper
(c) Iron
(d) Water
Answer:
Thermo flask prevents heat loss by
(a) Convection
(b) Radiation
(c) Conduction
(d) All of these
Answer:
Which is the following is the best conductor of the heat
(a) Silver
(b) Leather
(c) Benzene
(d) Mercury
Answer:
the best conductor of heat among the following is
(a) Mercury
(b) Water
(c) Alcohol
(d) Ether
Answer:
Decibe is a
(a) Unit of intensity
(b) Unit of intensity
(c) Musical instrument
(d) Musical note
Answer:
The velocity of light is maximum in
(a) Glass
(b) Vacuum
(c) Water
(d) Diamond
Answer: