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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) False
b) True
2.
If 6:2x::4:2x-4 then x = 5
a) False
b) 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) True
b) False
4.
A ratio has no unit
a) False
b) True
5.
The value of a ratio changes if its numerator and denominator and both multiplied and divided by the same number.
a) False
b) True
6.
The order of elements in a ratio is not important i.e. a:b and b:a in the same.
a) False
b) True
7.
If b
^{2}
= ac, then a, b and c are in continued proportion.
a) True
b) False
8.
If a:b = c:d then b:a = d:c
a) False
b) True
9.
The length and width of a rectangle is 120cm and 80cm respectively. The ratio between length and width is
a) 3:2
b) 2:3
c) 6:4
d) 12:8
10.
A ratio has units in
a) kg
b) cm
c) m
d) No unit
11.
If 5:3x::2:2x-4 then x =
a) 5
b) 8/11
c) 1/5
d) |8/11
12.
Volume and temperature of an object are
a) Both direct and inverse proportion
b) No relation
c) Inversely proportional
d) Directly proportional
13.
If v
a
1/p, then
a) v= kp
b) kp = v
c) vk = p
d) vp= k
14.
If 3:5::5:x then
a) 15
b) 3
c) 25/3
d) 25
15.
If a/b = c/d then the components property is
a) b/a = dc
b) a/a+b=c/c+d
c) a-b/b = c-d/d
d) a/c=b/d
16.
The third proportional of x
^{2}
and y is
a) y
^{2}
/x
^{2}
b) x/y
c) xy
d) x
^{2}
/y
^{2}
17.
Circumference of a circle varies directly as its radius if radius of a circle is 3m then circumference is
a) 6
p
m
b) 9
p
m
^{2}
c) 6
p
m
^{2}
d) 9
p
m
18.
y a x , when y = 4, x = 2, if x = 10 then y=
a) 8
b) 10
c) 20
d) 5
19.
The graphic representation between two quantities is a straight line passing through origin the relation between two quantities is
a) Both a & b
b) Inverse
c) No relation
d) Direct
20.
z
a
1/y when z = 2, y = 3, what will be z , when y = 2
a) 3
b) 6
c) 2
d) 4
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