NSTSE (National Science Talent Search Exam Unified Council) Class 9: Questions 845  851 of 2000
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Question number: 845
Question
The mean of is 16. Then the value of x is
Choices
Choice (4)  Response  

a.  Data is insufficient 

b.  21 

c.  Cannot be determined 

d.  16 

Question number: 846
Question
The daily sale of milk (in liters) in a ration shop for six days is as follows:
42,70,59,60,38.5 and 51.5 The average daily sale is
Choices
Choice (4)  Response  

a.  53.5 

b.  70 

c.  51.5 

d.  67.5 

Question number: 847
» Mathematics » Surface Areas & Volumes
Question
The base radius of a cylinder is times its height. The cost of painting its CSA at is Rs. 71.28. The volume of the liquid is ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 848
» Chemistry » The Nature of Matter
Question
Which of the following is not colloid?
Choices
Choice (4)  Response  

a.  Ice cream 

b.  Blood 

c.  Milk 

d.  Sugar solution 

Question number: 849
Question
The mean of 20 observations is 12.5. By error, one observation was noted as 15 instead of 15. Then the correct mean is
Choices
Choice (4)  Response  

a.  11.75 

b.  11 

c.  14 

d.  None of the above 

Question number: 850
» Mathematics » Heron's Formula
Question
The perimeter of a triangular field is 576 m and ratio of the sides is 6: 8: 10. Then the area of the field is
Choices
Choice (4)  Response  

a.  13824 sq m 

b.  18324 sq m 

c.  12724 sq m 

d.  14831 sq m 

Question number: 851
» Mathematics » Heron's Formula
Question
The perimeter of a triangular field is 196 m and ratio of the sides is 3: 5: 6. Then the area of the field is
Choices
Choice (4)  Response  

a.  733.36 sq m 

b.  1466.73 sq m 

c.  816.31 sq m 

d.  1512.56 sq m 
