NSTSE (National Science Talent Search Exam Unified Council) Class 9: Questions 639  645 of 2000
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Question number: 639
» Mathematics » Surface Areas & Volumes
Question
The area of the base of a cone is 308 sq cm. Its height is 24 cm. Then its total surface area is ________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 640
» Mathematics » Number Systems
Question
If a and b are two rational numbers, then which of the following statements is wrong?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  None of the above 
Question number: 641
» Biology » Fundamentals Unit of Life
Question
Which of the following possess cilia?
Choices
Choice (4)  Response  

a.  Yeast  
b.  Amoeba  
c.  Paramecium  
d.  Euglena 
Question number: 642
» Mathematics » Surface Areas & Volumes
Question
The ratio of the volume and curved surface area of a cylinder of unit radius and unit height
Choices
Choice (4)  Response  

a.  2: 3  
b.  2: 1  
c.  1: 2  
d.  3: 2 
Question number: 643
» Biology » Fundamentals Unit of Life
Question
Function of centriole is
Choices
Choice (4)  Response  

a.  DNA synthesis  
b.  Spindle formation  
c.  Protein synthesis  
d.  RNA synthesis 
Question number: 644
Question
The average weight of sample of 8 mangoes is 58 g. Later it was found that the weighing machine had shown the weight of each mango 3 g more. The correct average weight of a mango is
Choices
Choice (4)  Response  

a.  61 g  
b.  55 g  
c.  66 g  
d.  50 g 
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 