91 As an individual’s arteries harden, his blood pressure usually
Increases
92 As the amount of starch produced by a plant increases, the amount of chlorophyll in the leaf generally
Remains the same
93 Marine chromometers are used in determining
Longitude
94 Small liquid drops assume spherical shape because
The liquid tends to have minimum surface area due to surface tension
95 Yeast is added to dough for making bread. Yeast is added because
It produces Carbon Dioxide which makes the dough rise
96 If the cerebellum of a pigeon is destroyed, the pigeon would not be able
To fly
97 Electrons can be accelerated to very high energies by means of
Betatrons
98 A fusion reaction is initiated by
Very high temperature
99 A heap of oil clothes may catch fire without the presence of flame. Can you say why?
Oil in clothes undergoes oxidation resulting in heat which if allowed to accumulate may burst to fire
100 If two smoother surfaces come into contact, friction would be
Less
