NSTSE (National Science Talent Search Exam Unified Council) Class 9: Questions 419  424 of 2000
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Question number: 419
Question
The probability that in a family of 2 children, there will be at least one girl is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  1 
Question number: 420
» Biology » Fundamentals Unit of Life
Question
Basic difference between active & passive transport is
Choices
Choice (4)  Response  

a.  Active transport does not require energy and movement of solutes is against the concentration gradient.  
b.  Active transport requires energy with the movement of solutes against the concentration gradient.  
c.  Active transport requires energy with the movement of solutes along the concentration gradient.  
d.  All of the above 
Question number: 421
» Mathematics » Linear Equations in Two Variables
Question
If and is the solution of the equation , then the value of ‘k’ is ________.
Choices
Choice (4)  Response  

a.  18  
b.  6  
c.  19  
d.  21 
Question number: 422
» Biology » Fundamentals Unit of Life
Question
Transcription results in
Choices
Choice (4)  Response  

a.  Synthesis of DNA from RNA  
b.  Synthesis of DNA from DNA  
c.  Synthesis of Protein from DNA  
d.  Synthesis of RNA from DNA 
Question number: 423
Question
Two sides of a triangle are 6 and 9 units. Which of the following length can be the length of the third side?
Choices
Choice (4)  Response  

a.  15 cm  
b.  17 cm  
c.  2 cm  
d.  11 cm 
Question number: 424
» Mathematics » Heron's Formula
Question
The area of a parallelogram whose diagonal is 13.6 cm and the perpendicular distance of this diagonal from an opposite vertex is 15 cm is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
