GATE Questions

Q:

When I was 24, my mother was twice my age. Now I am 44, how old is my mother?

A) 84 B) 48
C) 68 D) 88
 
Answer & Explanation Answer: C) 68

Explanation:

From the given data,

when my age is 24, my mothers age is double of my age 

=> 48 yrs is my mothers age

=> Difference is 48 - 24 = 24 years.

 

When my age is 44

=> My mother is 44 + 24 = 68 years aged.

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Filed Under: Problems on Ages
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Q:

Hard Drive capacity is measured in

A) Newton B) GB
C) THz D) Gwallior
 
Answer & Explanation Answer: B) GB

Explanation:

Hard drive or disc is used to store the users information and its capacity is measured in Giga Bytes (GB) and Tera Bytes (TB).

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Q:

A sentence whose meaning is unclear

A) Anonymous B) Ambiguous
C) Unanimous D) Congruent
 
Answer & Explanation Answer: B) Ambiguous

Explanation:

A sentence whose meaning is unclear is called as Ambiguous.

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Filed Under: English
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Q:

What is the product of a number and its reciprocal?

A) 0 B) 1
C) -ve of the number D) the number itself
 
Answer & Explanation Answer: B) 1

Explanation:

The product of a number and its reciprocal is always equals to 1.

 

For Example : Let the number be 4.

Now, its reciprocal is 1/4

Hence, required product = 4 x 1/4 = 1.

 

Now, take the number as -15.

Then its reciprocal is -1/15

Required product = -15 x -1/15 = 1.

 

Hence, the product of a number and its reciprocal is 1.

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Filed Under: Arithmetical Reasoning
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Q:

Which of the following is not a pure substance?

A) Oxygen B) Carbon dioxide
C) Water D) Milk
 
Answer & Explanation Answer: D) Milk

Explanation:

Milk is not a pure substance since it has so many constituents that can be separated physically.

Compounds are pure substances formed from elements unlike mixtures.

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Filed Under: Chemistry
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Q:

Meaning of 'Stalk'?

A) Shoot B) Cane
C) Bent D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Stalk means the main stem of a herbaceous plant.

 

Synonyms for Stalk are - Shoot, trunk, cane, bent, reed, straw, bine, stock,...

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Filed Under: English
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Q:

Four girls Robin, Mandy, Stacy, Erica of four families Miller, Jacob, Flure and Clark prepare four salads using the fruits Apples, cherries, bananas, grapes .Each girls uses 3 fruits in her salad. No body have the same combination.

1) Robin not a Miller girl uses apples.
2) Miller and Mandy uses apples and cherries.
3) Clark uses cherries and grapes but Flure uses only one of them.
4) Erica is not Clark nor Flure.

Question :

Give all combinations of Girls with their family and salads ?

Answer

Out of 4 fruits, any 3 are chosen by 4 families.So the combinations are
Apple - A Cherries - C Banana - B Grapes - G
1) ACB
2) ACG
3) BCG
4) GAB


By 2nd condition, Miller family uses either i)ACB or ii)ACG
Now we have Robin, Mandy and Miller who uses apples (ACB,ACG,GAB)
while Miller and Mandy both uses A and C. That leaves GAB for Robin.


By 3rd condition Flure uses either C or G. So if we leave out the terms containing both C and G, we are left with ACB and GAB


Now, for the time being let's suppose Robin is not a Flure.
So ACB is taken by Flure.


So ACG has to be Miller and that leaves BCG to be Clark. So we get Robin - Jacob(GAB).


By 4th and 2nd conditions Erica and Mandy belong to the first two. That leaves Stacy - Clark(BCG).


By 2nd condition Mandy is not a Miller, so we get Mandy - Flure(ACB) and that leaves Erica - Miller(ACG).

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Q:

Which was the first Hydel power projects in India?

A) Paikara in Tamilnadu B) Nizamsagar in Telangana
C) Siva Samudram in Karnataka D) Palli vasal in Kerela
 
Answer & Explanation Answer: C) Siva Samudram in Karnataka

Explanation:

Siva Samudram in Karnatka. The potential for hydroelectric power in India is one of the greatest in the world.

 

The first hydro-electric power station in India was established in Karnataka at "shivana samudra".

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Filed Under: Indian Geography
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