Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 425  433 of 989
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Question 425
Question
MCQ▾The height and radius of a cone are 5 cm and 12 cm respectively. Its curved surface area must be is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 426
Question
MCQ▾The value of is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 427
Question
MCQ▾A sphere and a cube are of the same height. The ratio of their volumes is
Choices
Choice (4)  Response  

a.  21: 11  
b.  3: 4  
c.  11: 21  
d.  4: 3 
Question 428
Question
MCQ▾The mean of first eight odd numbers is
Choices
Choice (4)  Response  

a.  5  
b.  7.75  
c.  12  
d.  8 
Question 429
Question
MCQ▾Which of the following is a rational number?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 430
Question
MCQ▾In a quadrilateral the sides are 5,12,7, 10 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 431
Question
MCQ▾Two dice are thrown at a time. The probability that the difference of the numbers shown on the dice is 4 is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  None of the above 
Question 432
Question
MCQ▾A rational number can be expressed as a terminating decimal if the denominator has factors:
Choices
Choice (4)  Response  

a.  2,3 or 5  
b.  2 or 5  
c.  3 or 5  
d.  All of the above 
Question 433
Question
MCQ▾A cylindrical vessel of diameter 36 cm has some water in it. A cylindrical iron piece of diameter 24 cm and height 18 cm is dropped in it. After it was completely immersed, the raise in the level of water is ________.
Choices
Choice (4)  Response  

a.  8 cm  
b.  6 cm  
c.  4 cm  
d.  2 cm 