UNIT TEST (190701)

CLASS 8

If we increase the a number by 20% and then decrease by 20% how much percent number will change.
 If there are two successive 30% and 20% discount on computer set cost 30000. what must pay for them.
 How coal and petroleum is obtain
 What is the simple interest on principle 2400 at the rate of 5% per anumm for 2 months.
 If Rohan sold a pen on 80 rupees and get profit of 10% find Rohan’s cost price.
 The ratio 7 : 15 is equal to how much percent.


CLASS 9
 What is sound.
 Convert 40 0 c into F and 100 0C into kelvin
 Convert the following 126km/h into m/s and 90 m/s to km/h
 Write the SI unit of the following 1. force 2. Momentum 3. pressure 4. acceleration 5. velocity 6. quantities of substance
 It the sum of the two angle of triangle is equal to third angle show the given triangle is right angle triangle.
 Define the following 1. Frequency 2. wavelength 3. pitch 4.longitudinal wave

CLASS 7
 What is compliment of 40 0
 What is the supplement of 50 0
 The measure of an angle which is four times its supplement is
 The difference of two complementary angles is 30°. Then, the angles are
 Two angles are making a linear pair. If one of them is one-third of the other, find the angles.
 Define 1. line 2. line segment 3. Complementary angle 4. Supplementary angle