The decimal expansion of the rational number 33/ 22.5 will terminate after
(A) one decimal place (B) two decimal places
(C) three decimal places (D) more than 3 decimal places
Name the wastes which are generated in your house daily. What measures would you take for their disposal?
In a hydroelectric power plant more electrical power can be generated if water falls from a greater height because
(a) its temperature increases
(b) larger amount of potential energy is converted into kinetic energy
(c) the electricity content of water increases with height
(d) more water molecules dissociate into ions
What constitutes the central and peripheral nervous systems? How are the components of central nervous system protected?
A box contains 3 red, 5 blue, and 2 green balls. If a ball is drawn randomly, find the probability that it is a blue ball.
Find the mean of the following data: Class intervals – 0-10, 10-20, 20-30, 30-40; Frequencies – 5, 10, 8, 7.
Find the area of a sector of a circle with a radius of 10 cm and a central angle of 45°.
Construct a pair of tangents to a circle of radius 4 cm from a point 7 cm away from its center.
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