NSTSE (National Science Talent Search Exam Unified Council) Class 10: Questions 498  506 of 1484
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Question number: 498
» Mathematics » Surface Area and Volumes
Question
A hollow sphere of internal and external diameters 8 cm and 16 cm respectively is melted into a cone of base diameter 16 cm. Find the height of the cone.
Choices
Choice (4)  Response  

a.  14 cm  
b.  7 cm  
c.  56 cm  
d.  28 cm 
Question number: 499
Question
What should be added to to get ?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 500
Question
Simplify:
Choices
Choice (4)  Response  

a.  1  
b. 
 
c. 
 
d.  All of the above 
Question number: 501
» Mathematics » Quadratic Equations
Question
The equation has
Choices
Choice (4)  Response  

a.  Two imaginary roots  
b.  One real and one imaginary root  
c.  One real root  
d.  No root 
Question number: 502
» Mathematics » Surface Area and Volumes
Question
The cost of painting the TSA of cone at is Rs. 70.40. The volume of the cone its slant height being 20 cm is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 503
Question
If P = and Q = then ________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 504
» Mathematics » Coordinate Geometry
Question
The point of intersection of medians of triangle whose vertices are and is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 505
» Mathematics » Quadratic Equations
Question
The roots of are
Choices
Choice (4)  Response  

a.  4  
b.  0 and 4  
c.  2,3 and 4  
d.  0, 2,3 and 4 
Question number: 506
» Mathematics » Surface Area and Volumes
Question
A vessel is in conical shape. If its volume is 66.528 liters and height is 36 cm, the cost of repairing its CSA at Rs. 12/sq m is
Choices
Choice (4)  Response  

a.  4.38  
b.  9.21  
c.  7.64  
d.  8.76 