### Math 10 Chapter 3 - Part C

 1. The graph of direct proportion between x and y is a straight line which passes through origin.a) Falseb) True
 2. If 6:2x::4:2x-4 then x = 5a) Falseb) True
 3. The length and width of a rectangles are 65m and 39m respectively. The ration between the length and width is 5:3.a) Trueb) False
 4. A ratio has no unita) Falseb) True
 5. The value of a ratio changes if its numerator and denominator and both multiplied and divided by the same number.a) Falseb) True
 6. The order of elements in a ratio is not important i.e. a:b and b:a in the same.a) Falseb) True
 7. If b2 = ac, then a, b and c are in continued proportion.a) Trueb) False
 8. If a:b = c:d then b:a = d:ca) Falseb) True
 9. The length and width of a rectangle is 120cm and 80cm respectively. The ratio between length and width isa) 3:2 b) 2:3c) 6:4d) 12:8
 10. A ratio has units ina) kg b) cmc) md) No unit
 11. If 5:3x::2:2x-4 then x =a) 5 b) 8/11c) 1/5d) |8/11
 12. Volume and temperature of an object area) Both direct and inverse proportion b) No relationc) Inversely proportionald) Directly proportional
 13. If v a 1/p, thena) v= kp b) kp = vc) vk = pd) vp= k
 14. If 3:5::5:x thena) 15 b) 3c) 25/3d) 25
 15. If a/b = c/d then the components property isa) b/a = dc b) a/a+b=c/c+dc) a-b/b = c-d/dd) a/c=b/d
 16. The third proportional of x2 and y isa) y2/x2 b) x/yc) xyd) x2/y2
 17. Circumference of a circle varies directly as its radius if radius of a circle is 3m then circumference isa) 6pm b) 9pm2c) 6pm2d) 9pm
 18. y a x , when y = 4, x = 2, if x = 10 then y=a) 8 b) 10c) 20d) 5
 19. The graphic representation between two quantities is a straight line passing through origin the relation between two quantities isa) Both a & b b) Inversec) No relationd) Direct
 20. z a 1/y when z = 2, y = 3, what will be z , when y = 2a) 3 b) 6c) 2d) 4

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