NSTSE (National Science Talent Search Exam Unified Council) Class 9: Questions 645  652 of 2000
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Question number: 645
» Mathematics » Surface Areas & Volumes
Question
A cylindrical rod whose height is 16 times of its radius is melted and recast into spherical balls of same radius. The number of balls will be
Choices
Choice (4)  Response  

a.  6 

b.  12 

c.  8 

d.  4 

Question number: 646
Question
If 3,7, 8 and 4 occur with frequencies 2,6, 7 and 3 respectively, then the arithmetic mean is
Choices
Choice (4)  Response  

a.  18 

b.  6.44 

c.  6.2 

d.  8 

Question number: 647
» Mathematics » Number Systems
Question
Which of the following statements is true?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 648
» Mathematics » Heron's Formula
Question
In a quadrilateral the sides are 8,15,13,18 units and the angle between first sides is a right angle. The area of quadrilateral is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 649
» Biology » Fundamentals Unit of Life
Question
Centrosome is present in
Choices
Choice (4)  Response  

a.  Mitochondria 

b.  Cytoplasm 

c.  ER 

d.  Nucleus 

Question number: 650
» Mathematics » Number Systems
Question
equals
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 651
Question
A bag contains 6 blue and 9 black balls. If a ball is drawn at random, the probability that the drawn ball to blue is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 652
» Mathematics » Number Systems
Question
The value of x from
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 
