(e) 100 cm3 of CO2 diffused through a pin hole in one minute. How long will it takes for the same volume
Of propane (C3H8) to diffuse the same pin hole. ( C =12,O=16,H =1)
(f) (i) Give the name and formula of a common ore of zinc.
(ii) Write down the equations in symbols only for
Reaction of zinc with Na[Ag (CN)2] and
Reaction of sulphide and sodium cyanide solutions.
(a) Differentiate fleshy fruits and dry fruits.
(b) Give characteristics of mammals dealing with skeletal and food habits.
(c) State the effect of temperature on the rate of photosynthesis.
(d) State what you understand of respiration and name its two types.
(OR)
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