NSO Level 1 Science Olympiad (SOF) Class 8: Questions 25  31 of 1076
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Question number: 25
Question
A mixture of 36 litres contains wine and water in the proportion, How much wine must be added to it so that the ratio of wine to water may be?
Choices
Choice (4)  Response  

a.  16 

b.  8 

c.  10 

d.  12 

Question number: 26
Question
The HCF of and is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 27
Question
Find the smallest number of five digits exactly divisible by 4,20,22 and 25.
Choices
Choice (4)  Response  

a.  11000 

b.  12450 

c.  10800 

d.  10000 

Question number: 28
Question
M’s money is to R’s money as 6: 5 and R’s money is to Y’s money as 5: 3. If M has Rs. 300, Y has________
Choices
Choice (4)  Response  

a.  Rs. 150 

b.  Rs. 145 

c.  Rs. 175 

d.  Rs. 170 

Question number: 29
Question
Start with the number y. double it and then subtract 8. If the result is, the value of y is ________?
Choices
Choice (4)  Response  

a.  11 

b.  7 

c.  15 

d.  12 

Question number: 30
Question
Four different electronic devices make a beep after every 20 minutes, 40 minutes, 1 hour, and 1 hour 30 minutes respectively. All the devices beeped together at 12 noon. They will again beep together at
Choices
Choice (4)  Response  

a.  12 midnights 

b.  3 am 

c.  6 pm 

d.  5 am 

Question number: 31
Question
The HCF of and is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

