Group-C16*3=18) 15) Show that hydraulic machine is a force multiplier
16) What is motor effect? Write the difference between AC. and D. C.
17) If an iron box having length 3m, breadth Im and height 2m, has mass of
3,000kg, does it float on water? Show with calculation
18) Define lanthanides. Potassium is more reactive than sodium, why?
19) Draw a neat and labeled figure Central nervous system
20) Draw a neat and labeled figure of laboratory preparation of acidic gas
Group-D (444=16)
21) What is acceleration due to gravity? Show that acceleration due to gravity
inversely proportional to square of the radius of the earth.
vinding five times more than that of
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