NSTSE (National Science Talent Search Exam Unified Council) Class 10: Questions 445  451 of 1484
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Question number: 445
Question
If and then = ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 

Question number: 446
Question
The reciprocal of is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 447
» Mathematics » Quadratic Equations
Question
In the equation the roots are equal when
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 448
» Mathematics » Quadratic Equations
Question
In the equation , the sum of the roots is 4 and the product of the roots is 12. Then h and k have the value ________ respectively.
Choices
Choice (4)  Response  

a.  4 and 6 

b.  2 and 3 

c.  8 and 6 

d.  4 and 12 

Question number: 449
» Mathematics » Surface Area and Volumes
Question
A cylindrical vessel of diameter 18 cm has some water in it. A cylindrical iron piece of diameter 12 cm and height 9 cm is dropped in it. After it was completely immersed, the raise in the level of water is ________.
Choices
Choice (4)  Response  

a.  1 cm 

b.  8 cm 

c.  4 cm 

d.  2 cm 

Question number: 450
Question
= ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  None of the above 

Question number: 451
» Mathematics » Quadratic Equations
Question
If p and q are the rots of , then = ________.
Choices
Choice (4)  Response  

a.   11 

b.   12 

c.  13 

d.  37 
