Question

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MAYA DEVI GOEL PUBLIC SCHOOL,POHIR(AHMEDGARH)
Unit Test 2020
Date:03-06-2020
Class 10th
MM:30
Section A
1.If two solid hemispheres of same base radiusr are joined together along their bases,then curved
surface area of this new solid is
（a)4nr2
（b)6xr2
（c)3nr2
（d)8nr2
2.A right circular cylinder of radius r cm and height h cm(h>2r)just encloses a sphere of diameter
（a)r cm
（b)2r cm
（c)h cm
（d)2h cm
3.During conversion of a solid from one shape to another,the volume of the new shape will
（a)increase
（c)remain unaltered
（d)be doubled
（b)decrease
4.A cylindrical pencil sharpened at one edge is the combination of
（a)a cone and a cylinder
（b)frustum of a cone and a cylinder
（c)a hemisphere and a cylinder
（d)two cylinders.
5.A solid piece of iron in the form of a cuboid of dimensions 49cmx33cmx24cm,is moulded to
form a solid sphere.The radius of the sphere is
（a)21cm
（b)23cm
（c)25cm
（d)19cm
6.The probability of an event is p,the probability of its complementary event will be
（a)p-1
（b)p=0
（c)1-p
（d)1-1/p
7.If P(A)denotes the probability of an event A,then
（a)P(A)<0
（b)P(A)>1
（c)0≤P(A)s1
（d)-1≤P(A)≤1
8.A card is selected from a deck of 52 cards.The probability of its being a red face card is
（a)3/26
（b)3/13
（c)2/13
（d)1/2
9.The probability that a non leap year selected at random will contain 53 sundays is
（a)1/7
（b)2/7
（c)3/7
（d)5/7
10.When a die is thrown,the probability of getting an odd number less than 3 is
（a)1/6
（b)1/3
（c)1/2
（d)0​

Answer 1

Answer:

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