NSTSE (National Science Talent Search Exam Unified Council) Class 9: Questions 1045  1050 of 2000
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Question number: 1045
Question
The top of a broken tree touches the ground at a distance of 40 m from its base. If the tree is broken at a height of 9 m from the ground, then the actual height of the tree is
Choices
Choice (4)  Response  

a.  90 m 

b.  81 m 

c.  49 m 

d.  50 m 

Question number: 1046
» Mathematics » Number Systems
Question
What is the percentage of least number in the greatest number if are arranged in ascending or descending order?
Choices
Choice (4)  Response  

a.  40% 

b. 


c.  35% 

d. 


Question number: 1047
» Mathematics » Surface Areas & Volumes
Question
A cone of radius 25 cm is divided into two parts by drawing a plane through the midpoints of its axis, parallel to its base. The ratio of volumes of the two parts formed is ________.
Choices
Choice (4)  Response  

a.  5: 1 

b.  12: 1 

c.  1: 7 

d.  1: 14 

Question number: 1048
Question
The sum of 20 numbers is 580. The mean of those numbers is
Choices
Choice (4)  Response  

a.  21 

b.  19 

c.  29 

d.  58 

Question number: 1049
» Mathematics » Surface Areas & Volumes
Question
A cylindrical vessel of diameter 72 cm has some water in it. A cylindrical iron piece of diameter 12 cm and height 36 cm is dropped in it. After it was completely immersed, the raise in the level of water is ________.
Choices
Choice (4)  Response  

a.  3 cm 

b.  6 cm 

c.  1 cm 

d.  9 cm 

Question number: 1050
» Mathematics » Surface Areas & Volumes
Question
With a bucket of radius 28 cm and height 2 cm, 6 buckets of lime was poured to form a conical heap. If its area is , the canvas required to cover it is ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

