GATE Questions

Q:

Every rational number is an integer.

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

Any integer 'i' can be written as i = i/1, which is a rational number. Clearly, 7/2,-5/4, etc... are rational numbers but they are not integers.


Hence, from the above analysis, every integer is a rational number but a rational number need not be an integer.


 


Therefore the given statement that 'Every rational number is an integer' is FALSE.

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Subject: Arithmetical Reasoning
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Q:

Two cars, a Maruthi and a Toyato, start at the same time in opposite directions from two distinct points A and B. Starting from A, the Maruthi reaches B in 6 hrs 20 minutes and the Toyato starting from B, reaches A in 4 hrs 45 minutes. What is the speed of the Toyato, if the speed of the Maruthi is 60 Km/h?

A) 75 kmph B) 80 kmph
C) 86 kmph D) 90 kmph
 
Answer & Explanation Answer: B) 80 kmph

Explanation:

Let the distance between A and B = D

Given the speed of maruthi = 60 kmph

Maruthi reaches from A to B in 6 hrs 20 min = 6 + 20/60 = 6 1/3 hrs

Now, the distance between A & B = D = speed x time = 60 x 19/3 = 380 kms

As the distance is same for toyato also,

given time for toyato = 4 hrs 45 min = 4 + 45/60 = 4 3/4 = 19/4 hrs

speed of toyato = distance/time = 380/19/4 = 380 x 4/19 = 80 kmph.

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Filed Under: Time and Distance
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7 2634
Q:

Select the correct statement about cellular respiration?

A) All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecule B) All the carbon atoms in glucose ultimately incorporated during cellular respiration into NADH molecule
C) All the carbon atoms in glucose ultimately incorporated during cellular respiration into ATP molecule D) All the carbon atoms in glucose ultimately incorporated during cellular respiration into water molecule
 
Answer & Explanation Answer: A) All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecule

Explanation:

All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecules.

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Filed Under: Biology
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2 2632
Q:

Which of the following is a hydrocarbon?

A) C2H6 B) C3H8
C) CH4 D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The simplest organic compounds contain only the elements carbon and hydrogen, and are called hydrocarbons.

Here all the given options are hydrocarbons.

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Filed Under: Chemistry
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0 2630
Q:

Processing speed of computer is measured in MIPS.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Million Instructions Per Second is a method of measuring the raw speed of a computer's processor. MIPS measures roughly the number of machine instructions that a computer can execute in one second.

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Q:

The first lion safari of Rajasthan has come up at which of the following parks?

A) Nahargarh Biological Park B) Keoladeo National Park
C) Sariska Tiger Reserve D) Ranthambore National Park
 
Answer & Explanation Answer: A) Nahargarh Biological Park

Explanation:
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Filed Under: Indian Geography
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2 2620
Q:

Autocorrect was originally designed to replace

A) Misspelled words B) Grammatically incorrect
C) Repetitive words D) All of the above
 
Answer & Explanation Answer: A) Misspelled words

Explanation:

autocorrect_was_originally_designed_to_replace1561613833.jpg image

 

Autocorrect was originally designed to replace Misspelled words. Its purpose is as part of the spell checker to correct common spelling or typing errors, saving time for the user. It is commonly found in word processors and text editing interfaces for smartphones, computers, etc.

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Q:

Which alternative energy source is exhaustible?

A) tidal energy B) wind energy
C) solar energy D) geothermal energy
 
Answer & Explanation Answer: D) geothermal energy

Explanation:

Based on conventionality in deriving energy, energy sources could be classified as

 

Conventional ::

coal, oil, hydro, nuclear, etc... sources which can be used up or exhaustible.

(and)

Non - conventional ::

solar, wind, tidal, geothermal, biogas, etc... sources which are not exhausted.

 

Among the given options, Geothermal energy is the alternative energy source among all the choices that are given in the question, that is exhaustible.

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Filed Under: Physics
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