GATE Questions and Answers with Explanation

Q:

Is B2+ Paramagnetic or Diamagnetic?

Answer

B2+ is a Paramagnetic.

The filled orbitals are $σ$ (1s) $^{2}$ , $σ^{*}$ (1s) $^{2}$ , $σ$ (2s) $^{2}$ , $σ^{*}$ (2s) $^{2}$ . The half-filled orbitals are $π$ (2p $_{x}$ ) and $π$ (2p $_{y}$ ). Since it posses 2 unpaired electrons, it is Paramagnetic in nature.

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Subject: Physics Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

A train running at the speed of 40 km/hr crosses a signal pole in 9 seconds. Find the length of the train ?

A) 90 mts	B) 150 mts
C) 120 mts	D) 100 mts

Answer & Explanation Answer: D) 100 mts

Explanation:

We know that $S p e e d = \frac{d i s \tan c e}{t i m e}$

distance= speed * time

$\Rightarrow$ $d = (40 \times \frac{5}{18}) \times 9$

d= 100 mts.

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Filed Under: Problems on Trains
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Q:

First Bank to introduce Credit Card in India

A) HSBC Bank	B) ICICI Bank
C) State Bank of India	D) Central Bank of India

Answer & Explanation Answer: D) Central Bank of India

Explanation:

First Bank to introduce Credit Card in India - Central Bank of India

First Bank to introduce ATM - HSBC, 1987

First Bank to introduce Internet Banking - ICICI Bank

First Bank to introduce Mutual Funds - State Bank of India

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Filed Under: General Awareness
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Q:

The default header for a worksheet is

A) The date and time	B) User name
C) Date & Time	D) None of the above

Answer & Explanation Answer: D) None of the above

Explanation:

MS Excel is the widely used worksheet in computer applications. We can add what we want in the header and footer of MS Excel sheets.

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18 14258

Q:

What has One Eye Yet cannot See?

A) One-eyed Jack	B) A Needle
C) Blind Justice	D) Hurricane eye

Answer & Explanation Answer: B) A Needle

Explanation:

What has one eye yet cannot see is An Eye of a Needle.

A needle has an eye through which we thread it but it is not for seeing.

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Q:

Two girls ate dinner together.

After that they both ordered iced tea. One girl drank them very fast and had finished five in the time it took the other to drink just one.

The girl who drank one died while the other survived. However, all of the drinks that were served turned out to contain poison.

How did the girl who drank the most survive?

Answer

The poison was in the ice. When the girl drank the iced tea, the ice was still fully frozen. Gradually, as the ice cubes melted the poison was released into the drink.

Hence, the girl who died, drunk the tea after the ice melted. So, she was died.

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Q:

I jump when I walk and sit when I stand. What am I?

Answer

A Kangaroo is what jumps when walking and sit when it is in standing.

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Q:

In a parking lot there are two types of vehicles, two wheelers and four wheelers. The total number of the vehicles in the parking lot is 200. When the number of the wheels of all the vehicles is counted it is counted to be 580. Find the total number of the four wheeler vehicles in the parking lot ?

A) 110	B) 90
C) 100	D) 180

Answer & Explanation Answer: B) 90

Explanation:

Let number of 2 wheelers be 'x'
and 4 wheelers be 'y'

Given total number of vehicles = 200
i.e, x + y = 200 ....(1)

Given total number of wheels = 580
i.e, 2x + 4y = 580 ...(2)

By solving (1)&(2), we get

y = 90
=> x = 110

Therefore, number of two wheelers = 110
number of four wheelers = 90

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Filed Under: Arithmetical Reasoning
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