CAT Questions

Q:

(3x + 2) (2x - 5) = ax² + kx + n. What is the value of  a - n + k ?

A) 4 B) 1
C) 5 D) 3
 
Answer & Explanation Answer: C) 5

Explanation:

(3x + 2) (2x - 5) = ax2+kx+n ...............(1)

 

But (3x + 2)(2x - 5) = 6x2-11x-10........(2)

 

so by comparing (1) & (2),

 

we get a= 6, k= -11 , n= -10

 

(a - n + k) = 6 + 10 - 11 = 5.

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Filed Under: Numbers
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Q:

Oxygen in our blood is transported by a protein named

A) keratin B) myoglobi
C) collagen D) haemoglobin
 
Answer & Explanation Answer: D) haemoglobin

Explanation:

Oxygen in our blood is transported by a protein named Haemoglobin.

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Filed Under: Biology
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Q:

A single packet on a data link is known as

A) Frame B) Group
C) Block D) Path
 
Answer & Explanation Answer: B) Group

Explanation:

In the OSI model of computer networking, a frame is the protocol data unit at the data link layer. Frames are the result of the final layer of encapsulation before the data is transmitted over the physical layer.

 

A single packet on a data link is known as Frame.

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Filed Under: Computer
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Q:

Latitude of place is indicative of its

A) Temperature B) Altitude
C) Time D) Rainfall
 
Answer & Explanation Answer: A) Temperature

Explanation:

Latitude of place is indicative of its temperature. In geography, latitude is a geographic coordinate that specifies the north–south position of a point on the Earth's surface. Latitude is an angle which ranges from 0° at the Equator to 90° at the poles.

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Filed Under: World Geography
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Q:

Who has become the first person to cross the Atlantic Ocean on standup paddle ?

A) Jack Alberta B) Henary Christpher
C) Christopher Bernard D) Chris Bertish
 
Answer & Explanation Answer: D) Chris Bertish

Explanation:

South African Chris Bertish has become the first person to cross the Atlantic Ocean on standup paddle. He made the epic 4,050-mile voyage alone at sea aboard his custom-built craft.

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Filed Under: General Awareness
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Q:

If 5x - 17 = -x + 7, then x = ?

A) 4 B) 5
C) 7 D) 9
 
Answer & Explanation Answer: A) 4

Explanation:

Given equation  5x-17 = -x+7

Add 1x to each side of the equation

5x-17+x = -x+7+x

6x=24

x=4

 

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Filed Under: Logarithms
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Q:

What is consumption disease in the 19th century?

A) Tuberculosis B) Paralysis
C) Plague D) Cholera
 
Answer & Explanation Answer: A) Tuberculosis

Explanation:

Tuberculosis (TB) was the leading cause of death in the United States and one of the most feared diseases in the world during the 19th and early 20th centuries.

Formerly known as Consumption diseases because many types of lung diseases were lumped under the term 'consumption'. Lung cancer and bronchitis were examples.

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Filed Under: Indian History
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Q:

The binary system uses powers of

A) 0 B) 1
C) 2 D) None of the above
 
Answer & Explanation Answer: C) 2

Explanation:

Binary system is what the representation uses only two digits 0 & 1.

It uses only the powers of 2.

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Filed Under: Arithmetical Reasoning
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