# Mental Ability [NSO Level 1- Science Olympiad (SOF) Class 8]: Questions 1 - 6 of 104

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## Question 1

Mental Ability

### Question

MCQ▾

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 2

Mental Ability

### Question

MCQ▾

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 3

Mental Ability

### Question

MCQ▾

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 4

Mental Ability

### Question

MCQ▾

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 5

Mental Ability

### Question

MCQ▾

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 6

Mental Ability

### Question

MCQ▾

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 ₹ 520, Y has________

### Choices

Choice (4)Response

a.

₹ 1500

b.

₹ 1950

c.

₹ 1780

d.

₹ 1420

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