In a photocell light energy is converted into?
A. potential energy
B. chemical energy
C. heat energy
D. electrical energy
A. potential energy
B. chemical energy
C. heat energy
D. electrical energy
The number of spark plugs needed in a diesel engine is__________?
A. 2
B. 3
C. 0
D. 4
E. None of these
A. oxygen and hydrogen
B. oxygen, hydrogen, acetylene and nitrogen
C. oxygen, acetylene and argon
D. oxygen and acetylene
Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?
A. ionic substances
B. metallic substances
C. molecular solids
D. covalent network solids
Steradian is the unit of_______________?
A. Solid angle
B. Liquid angle
C. Gas angle
D. Plain angle
A. Pavo cristatus
B. kakapo
C. Passer
D. None of these
The kakapo, also called owl parrot, is a species of large, flightless, nocturnal, ground-dwelling parrot of the super-family Strigopoidea, endemic to New Zealand. It has finely blotched yellow-green plumage, a distinct facial disc, a large grey beak, short legs, large feet, and relatively short wings and tail.
Some other flightless birds you might know are. Emu, dodo, emperor penguin, little penguin & common ostrich.
A. Iron
B. Metals
C. Magma
D. Coal