91 The instrument used for the measurement of the gaseous pressure is called

Manometer

92 A resonating column of air contains

Stationary longitudinal waves

93 Sound energy is converted into electrical energy in a

Microphone

94 Some artificial satellites are equipped with solar cells. These solar cells

Convert light energy to electrical energy

95 Rising and setting sun appears to be reddish because

Of scattering of red light due to dust particles and air molecules

96 Passage of materials through the membrane of a cells is

Diffusion

97 The process by which cell receive oxygen and dispose carbon dioxide is called

External respiration

98 The tree which is famous for its bark source of the drug quinine is

Cinchona

99 A beam of light is best diffuse by a

Rough white surface

100 The science of the study of birds is called

Ornithology