In the HCl molecule, the separation between the nuclei of the two atoms is about
1.27 Å (1 Å = 10-10 m). Find the approximate location of the CM of the molecule,
given that a chlorine atom is about 35.5 times as massive as a hydrogen atom and
nearly all the mass of an atom is concentrated in its nucleus.
Give the location of the centre of mass of a (i) sphere, (ii) cylinder, (iii) ring, and (iv)
cube, each of uniform mass density. Does the centre of mass of a body necessarily lie
inside the body ?
Given below are names of some animals:
(i) Goat (ii) Human beings
(iii) Cockroach (iv) Eagle
Which of the above animals form a pair of omnivores?
(a) (i) and (ii) (b) (ii) and (iii)
(c) (iii) and (iv) (d) (ii) and (iv)
Differentiate between
(a) Respiration and Combustion
(b) Glycolysis and Krebs’ cycle
(c) Aerobic respiration and Fermentation
Give comparison between the following:
(a) C3 and C4 pathways
(b) Cyclic and non-cyclic photophosphorylation
(c) Anatomy of leaf in C3 and C4 plants
Figure 11.10 shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following questions:
(a) At which point/s (A, B or C) in the curve is light a limiting factor?
(b) What could be the limiting factor/s in region A?
(c) What do C and D represent on the curve?
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