GATE Questions

Q:

Which statement about electrons and atomic orbitals is NOT true?

A) An orbital can contain a minimum of two electrons B) An electron has the same amount of energy in all orbitals
C) An atom’s lowest energy level has only two orbitals D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Yes, all the given statements are NOT true about electrons and atomic orbitals.

 

True statements are ::

 

An orbital can contain a maximum of two electrons.

An atom’s lowest energy level has only one orbital.

An electron has different amount of energies in all orbitals.

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Q:

What is another name for the governor of a state?

A) Chief Executive B) Attorney General
C) Secretary of the State D) Vice Pesident
 
Answer & Explanation Answer: A) Chief Executive

Explanation:

Another name for the governor of the state is Chief Executive of the state.

And we also know that, The attorney general is the head of the US Department of Justice, The vice president is just under the president of the US and The secretary of state is the head of the US Department of State.

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Q:

Elisa test is employed to diagnose

A) HIV B) Cancer
C) Tuberculosis D) Polio
 
Answer & Explanation Answer: A) HIV

Explanation:

ELISA - Enzyme-Linked Immuno Sorbent Assay.

test11528447143.jpg image

 

An ELISA test may be used to diagnose: HIV, which causes AIDS.

 

An ELISA also called EIA, is a test that detects and measures antibodies in your blood. Antibodies are proteins that your body produces in response to harmful substances called antigens.

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Q:

The question given below contain two statements giving certain data. You have to decide whether the data given in the statements are sufficient for answering the question ?

Question :

What is the height of a right-angled triangle ?

Statements :

A. The area of the triangle is 20 times its base.

B. The perimeter of the triangle is equal to that of a square of the side 10 cm.

A) Only statement A is required B) Only statement B is required
C) Both A & B are required D) Neither (A) nor (B) is reuired
 
Answer & Explanation Answer: A) Only statement A is required

Explanation:

From statement (A),

20b = (1/2) × b × h

h = 40 cm.

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Q:

Which of the following was most probably the first metal to be used in India?

A) copper B) Gold
C) Siver D) Iron
 
Answer & Explanation Answer: A) copper

Explanation:

The earliest historic evidences of use of metal are of Chalcolithic Age or Stone-Copper Age, which covered the period from 1800 - 800 BC. This period was by the use of Copper as well as stone.

 

Hence, the first metal to be used in India is Copper.

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Q:

Emphasize most nearly means

A) Accentuate B) Calculate
C) Justify D) Demain
 
Answer & Explanation Answer: A) Accentuate

Explanation:

Emphasize means giving special importance or worth giving attention to in speaking or writing.

Here in the options, Accentuate is most nearly means Emphasize.

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Q:

What is the systematic name of NH4ClO3?

A) Ammonium Chloride B) Ammonium Chlorate
C) Ammonium Chlorane D) Ammonium Chlorine
 
Answer & Explanation Answer: B) Ammonium Chlorate

Explanation:

In common we all call the systematic name of NH4ClO3 as Ammonium Chlorate. But originally the systematic name is azanium trioxidochlorate.

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Q:

The payment per hour for a daily-wages employee is increased by 33.33 and the working time is reduced by 33.33%. What is the percentage change in the employee's income ?

A) 11.11% decrease B) 21.11% increase
C) 11.11% increase D) 21.11% decrease
 
Answer & Explanation Answer: A) 11.11% decrease

Explanation:

If earlier he is getting Rs. 1  per hr and working for 1 hr, income = Rs. 1
Now he is getting Rs 1.3333 per hr and working for 0.66667 hrs

Then income for 0.66667 hrs = Rs. 0.8889.

If payment per hr is increased by 33.33 %  and working hours dereased by 33.33%, then 11.11 % decrease in income.

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