AIEEE Questions

Q:

The average score of boys in an examination in a school is 81 and that of the girls is 83 and the average score of the school is 81.8. Then what will be ratio between the number of girls to the number of boys, in the examination?

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

Explanation:

Let the number of boys = b

Let the number of girls = g

From the given data,

 

81b + 83g = 81.8(b + g)

81.8b - 81b = 83g - 81.8g

0.8b = 1.2g

b/g = 1.2/0.8 = 12/8 = 3/2

=> g : b = 2 : 3

 

Hence, ratio between the number of girls to the number of boys = 2 : 3.

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Filed Under: Average
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24 5055
Q:

There are five bags. In the first bag we put some fruits. Each bag the number of fruits is reduced by 1/4. The last bag contains 4. Then the number of fruits in the first bag is ?

A) 2596 B) 1024
C) 256 D) 64
 
Answer & Explanation Answer: B) 1024

Explanation:

Fruits reduced by 1/4.
Total no. of bags N = 5
Formula to find no. of fruits in 1st bag = 4^n
Last Bag = 4 fruits.
That means, 4th bag = 4 x 4 = 16 fruits
3rd bag = 16 x 4 = 64 fruits
2nd bag = 64 x 4 = 256 fruits
1st bag = 256 x 4= 1024 fruits.

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Filed Under: Arithmetical Reasoning
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3 5053
Q:

A flagstaff 17.5 m high casts a shadow of length 40.25 m. What will be the height of a building, which casts a shadow of length 28.75 m under similar conditions ?  

A) 14 cm B) 13.5 cm
C) 12.5 cm D) 11.4 cm
 
Answer & Explanation Answer: C) 12.5 cm

Explanation:

Let the required height of the building be x meter

More shadow length, More height(direct proportion)

Hence we can write as

(shadow length) 40.25 : 28.75 :: 17.5 : x
⇒ 40.25 × x = 28.75 × 17.5
⇒ x = 28.75 × 17.5/40.25
= 2875 × 175/40250
= 2875 × 7/1610
= 2875/230
= 575/46
= 12.5 cm

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Filed Under: Height and Distance
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17 5052
Q:

Find the one which does not belong to that group ?

A) Mirage B) Pond
C) Oasis D) Fountain
 
Answer & Explanation Answer: A) Mirage

Explanation:

Except mirage, all others are sources of water.

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Filed Under: Analogy
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5 5052
Q:

What is the capital of the country Turkmenistan ?

A) Dushanbe B) Ashgabat
C) Bishkek D) Astana
 
Answer & Explanation Answer: B) Ashgabat

Explanation:
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Filed Under: World Geography
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10 5052
Q:

MICR stands for

A) Magnetic Ink Code Reader B) Magnetic Ink Case Reader
C) Magnetic Ink Character Reader D) None of the above
 
Answer & Explanation Answer: C) Magnetic Ink Character Reader

Explanation:

MICRCode1549972776.png image

MICR stands for Magnetic Ink Character Reader.

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Filed Under: General Science
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4 5048
Q:

40% of 80?

A) 36 B) 32
C) 42 D) 44
 
Answer & Explanation Answer: B) 32

Explanation:

Here 40% of 80 is given as

40100 x 80 = 8 x 4 = 32

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Filed Under: Percentage
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7 5045
Q:

Which sample is a pure substance?

A) Table salt B) Pure water
C) a test tube of zinc oxide D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

A pure substance can be defined as any single type of material that has not been contaminated by another substance. In chemistry, a pure substance has a definite composition. It can be a compound or an element. A pure substance is considered to be a material that consists of one type of "building block" of matter.

Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate).

Tin, sulfur, and diamond are examples of pure substances which are chemical elements. All elements are pure substances.

Water, sugar, salt and baking soda are pure substances which are chemical compounds. Chemical compounds also are pure substances

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Filed Under: Chemistry
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2 5040