NSTSE (National Science Talent Search Exam Unified Council) Class 9: Questions 551  559 of 2000
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Question number: 551
Question
If the arithmetic mean of 8,12,15,21, x, 25 is 15, then x is
Choices
Choice (4)  Response  

a.  4 

b.  9 

c.  18 

d.  11 

Question number: 552
» Mathematics » Surface Areas & Volumes
Question
Three cylinders each of height 32 cm and radius of base 2 cm are placed on a plane so that each cylinder touches the other two. Then the volume of region enclosed between the three cylinders in is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 553
» Mathematics » Number Systems
Question
The equivalent rational form of is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 554
» Chemistry » The Nature of Matter
Question
Milk is ________ type of colloidal solution.
Choices
Choice (4)  Response  

a.  Emulsion 

b.  Suspension 

c.  Sol 

d.  Foam 

Question number: 555
» Chemistry » The Nature of Matter
Question
Air is ________
Choices
Choice (4)  Response  

a.  An element 

b.  A compound 

c.  A mixture 

d.  None of the above 

Question number: 556
» Biology » Fundamentals Unit of Life
Question
Monocentric chromosome has
Choices
Choice (4)  Response  

a.  Four centromere 

b.  Three centromere 

c.  Two centromere 

d.  One centromere 

Question number: 557
» Biology » Fundamentals Unit of Life
Question
Most stable form of DNA is
Choices
Choice (4)  Response  

a.  B form 

b.  Z form 

c.  A form 

d.  Question does not provide sufficient data or is vague 

Question number: 558
» Mathematics » Number Systems
Question
The rationalizing factor of is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 559
Question
The angles in a right angled triangle other than the right angle are
Choices
Choice (4)  Response  

a.  Obtuse 

b.  Right 

c.  Acute 

d.  All of the above 
