GATE Questions

Q:

12 men complete a work in 14 days. 5 days after they had started working, 3 men join them. How many more days will all of them take to complete the remaining work?

A) 5 B) 4
C) 3 D) 2
 
Answer & Explanation Answer: C) 3

Explanation:

Let p be the required number of days.

From the given data,

12 x 14 = 12 x 5 + (12+3) x p 

12 x 14 = 12[5 + 3p]

14 = 5 + 3p

3p = 9

p = 3 days.

 

Hence, more 3 days all of them take to complete the remaining work.

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Filed Under: Time and Work
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2 4029
Q:

Instrument used to measure oxygen?

A) Aminometer B) Respirometer
C) Thaleometer D) Galiometer
 
Answer & Explanation Answer: B) Respirometer

Explanation:

A respirometer is a device used to measure the rate of respiration of a living organism by measuring its rate of exchange of oxygen and/or carbon dioxide.

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Filed Under: General Awareness
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5 4028
Q:

Lasya invested certain amount for two rates of simple interests at 5% p.a. and 4% p.a. What is the ratio of Lasya's investments if the interests from those investments are equal ?

A) 4 : 5 B) 5 : 4
C) 7 : 6 D) 6 : 7
 
Answer & Explanation Answer: A) 4 : 5

Explanation:

Let x be the investment of Lasya in 5% and y be in 4%

x(5)(n)/100 = y(4)(n)/100

=> x/y = 4/5

x : y = 4 : 5

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Filed Under: Simple Interest
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3 4026
Q:

The Study of Universe is called

A) Universology B) Cosmetology
C) Petology D) Cosmology
 
Answer & Explanation Answer: D) Cosmology

Explanation:

Cosmology is the scientific study of the large scale properties of the universe as a whole. It endeavors to use the scientific method to understand the origin, evolution and ultimate fate of the entire Universe.

Depending on the outcome of the observations, the theories will need to be abandoned, revised or extended to accommodate the data. The prevailing theory about the origin and evolution of our Universe is the so-called Big Bang theory.

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7 4025
Q:

Which of the following Rivers has no Bridges built over it?

A) Nile B) Congo river
C) Amazon river D) Yellow river
 
Answer & Explanation Answer: C) Amazon river

Explanation:

There are No bridges over The Amazon River.

The Amazon River, in South America, is the largest river by discharge volume of water in the world and the second longest in length after The Nile in Egypt.

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11 4020
Q:

Which of the following elements is a metal?

A) Se B) I
C) Zn D) S
 
Answer & Explanation Answer: C) Zn

Explanation:

In chemistry, a metal is an element that readily forms positive ions (cations) and has metallic bonds. Metals are opaque, lustrous elements that are good conductors of heat and electricity. Most metals are malleable and ductile and are, in general, denser than the other elemental substances.

 

Examples of metals are aluminium, copper, iron, tin, gold, lead, silver, titanium, uranium, and zinc.

 

Here Se - Selenium is an element but is not a metal, S - Sulphur is not a metal and I - Iodine is also not a metal.

 

Hence, Zn - Zinc is the only metal in the given options.

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Filed Under: Chemistry
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4 4017
Q:

Choose the sentence that contains a relative pronoun?

A) That is my books bag B) Some boys are coming for tution
C) The girl, whom you have met yesterday is my sister D) Those are not your things
 
Answer & Explanation Answer: C) The girl, whom you have met yesterday is my sister

Explanation:

Here in the given options, The girl, whom you have met yesterday is my sister is the sentence which has relative pronoun.

 

The pronoun which is used to connect a clause or phrase to a noun or pronoun is called as relative pronoun.

 

The most common relative pronouns are who, whom, whose, which, and that. Sometimes when and where can also be used as relative pronouns.

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2 4014
Q:

What is the capital of Bhutan ?

A) Dhaka B) Thimphu
C) Tripoli D) Tokyo
 
Answer & Explanation Answer: B) Thimphu

Explanation:
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Filed Under: World Geography
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14 4010