Mental Ability (NSO Level 1 Science Olympiad (SOF) Class 8): Questions 1  6 of 104
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Question number: 1
» Mental Ability
Question
Which of the following statement is false?
Choices
Choice (4)  Response  

a.  The orthocenter of a right angled triangle is the vertex containing right angles 

b.  The circumcentre of a right angled triangle is the midpoint of its hypotenuse 

c.  The centroid of a right angled triangle lies in the interior of the triangle 

d.  None of the above 

Question number: 2
» Mental Ability
Question
Find the smallest number of four digits exactly divisible by 6,12,20 and 36.
Choices
Choice (4)  Response  

a.  1020 

b.  1120 

c.  1080 

d.  1045 

Question number: 3
» Mental Ability
Question
The length of a rectangle is triple while its breath is halved. What is the percentage change in area?
Choices
Choice (4)  Response  

a.  50% 

b.  30% 

c.  No Change 

d.  20% 

Question number: 4
» Mental Ability
Question
The length of a rectangle is halved while its breath is double. What is the percentage change in area?
Choices
Choice (4)  Response  

a.  No Change 

b.  50% 

c.  30% 

d.  20% 

Question number: 5
» Mental Ability
Question
Four different electronic devices make a beep after every 30 minutes, 1 hour, 1 hour 45 minutes and 2 hour respectively. All the devices beeped together at 12 noon. They will again beep together at
Choices
Choice (4)  Response  

a.  3 am 

b.  12 midnights 

c.  2 am 

d.  6 pm 

Question number: 6
» Mental Ability
Question
A’s money is to B’s money as 4: 5 and B’s money is to C’s money as 2: 6. If A has Rs. 520, Y has________
Choices
Choice (4)  Response  

a.  Rs. 1500 

b.  Rs. 1950 

c.  Rs. 1780 

d.  Rs. 1420 
