GATE Questions

Q:

Is Air a Mixture?

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

Explanation:

True, Air is a Mixture.


Air is considered as mixture for the following reasons ;


1. Air can be separated into its components like N2, O2 , Argon and CO2 by the process of fractional distillation of liquid air.


2. Air shows the properties of all the gases present in the atmosphere.
For example : Oxygen is good Supporter of combustion. Hence air also is good supporter of combustion.


3. Air does not have a fixed formula.


4. Air has a variable composition because air at different places contains different amount of gases.


5. Heat or Light energy is neither absorbed nor released when air is prepared physical by mixing required amount of gases .


6. Mixture does have fixed boiling Point. It holds good in case of liquid air.

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Subject: Physics
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Q:

K can finish the work in 18 days and L can do the same work in 15 days. L worked for 10 days and left the job. In how many days, K alone can finish the remaining work ?

A) 5.5 days B) 6 days
C) 4.2 days D) 5 days
 
Answer & Explanation Answer: B) 6 days

Explanation:

L's 10 days work = 115×10=23

 


Remaining work = 1-23=13

 


Now,  work is done by K in one day = 1/18

 

1/3 work is done by K in  18×13 = 6 days

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Filed Under: Time and Work
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5 4329
Q:

System Study involves

A) documenting the existing system B) identifying current deficiencies and establishing new goals
C) study of an existing system D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:
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Q:

Largest gulf in the world

A) Persian Gulf B) Gulf of Mannar
C) Gulf of Mexico D) Gulf of Carpentaria
 
Answer & Explanation Answer: C) Gulf of Mexico

Explanation:

*  The Gulf of Mexico, bordered by the United States, Mexico, and the island nation of Cuba, is the worlds largest gulf.

It has a coastline of about 5,000 kilometers (3,100 miles).

*  The Gulf of Mexico is connected to the Atlantic Ocean by the Straits of Florida, between Cuba and the U.S. state of Florida.

It is largely surrounded by the North American continent.

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Filed Under: General Awareness
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Q:

Fill in the blank with an appropriate word from the following options.

Usually the room tariff in this hotel is higher. At present, it is low because of the------- season.

A) Peak B) Off
C) Down D) Slow
 
Answer & Explanation Answer: B) Off

Explanation:

Season can be either at peak or off.
Presently it is low, that is because of OFF season.

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Filed Under: Analogy
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Q:

The main buffer system of the human blood is

A) H2CO3 B) H2SO4
C) CO2 D) O3
 
Answer & Explanation Answer: A) H2CO3

Explanation:

the_main_buffer_system_of_the_human_blood_is1556690852.jpg image

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Filed Under: Biology
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Q:

The series of differences between consecutive prime numbers is represented as Cp1, Cp2, Cp3, .... Cpn , Whare Cp1 is the difference between the second and the first prime number. Find the sum of series when n = 23, given that the 23rd prime number is 83 ? 

A) 87 B) 81
C) 83 D) 85
 
Answer & Explanation Answer: A) 87

Explanation:

Cp1 = p2 - p1 ,
Cp2 = p3 - p2
..
..
..
Cp23 = p24 - p23
Sum of series = (p2-p1) + (p3-p2) + .....(p23-p22) + (p24-p23)
All terms get cancelled, except p1 = 2 and p24 = 89
So Sum = -p1 + p24
Sum of series = -2 + 89 = 87

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Filed Under: Problems on Numbers
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Q:

Synonym of 'Beautiful'?

A) Alluring B) Ugly
C) Disgusting D) Loathsome
 
Answer & Explanation Answer: A) Alluring

Explanation:

Beautiful means good looking, having pleasing personality, glamourous, charming.

Synonyms of Beautiful are handsome, attractive, alluring, cute, fair,...

 

Hence, in the given options Synonym of 'Beautiful' is Alluring.

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