Questions

Q:

Who invented fuel cells in 1839?

A) Buckminster Fuller B) Sir William Grove
C) Sylvester Graham D) Joyce Hall
 
Answer & Explanation Answer: B) Sir William Grove

Explanation:
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Filed Under: Inventions

11 6042
Q:

What building has the most stories?

Answer

A Libraury. It has more number of story books in it to read.

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Subject: Logic Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
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5 6035
Q:

What kind of apple isn't an apple?

A) Pineapple B) Akero apple
C) Adanac apple D) Aceymac apple
 
Answer & Explanation Answer: A) Pineapple

Explanation:

Except pineapple remaining all three are types of apples.

Pineapple is what kind of apple isn't an apple.

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Filed Under: Logic Puzzles
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4 6032
Q:

what will be the output of the following code?

class Value
{
    public int i = 15;
}
public class Test
{
    public static void main(String argv[])
    {
        Test t = new Test();
        t.first();
    }
    public void first()
    {
        int i = 5;
        Value v = new Value();
        v.i = 25;
        second(v, i);
        System.out.println(v.i);
    }
    public void second(Value v, int i)
    {
        i = 0;
        v.i = 20;
        Value val = new Value();
        v =  val;
        System.out.println(v.i + " " + i);
    }
}

A) 15 0 2 B) 15 0 0
C) 15 20 0 D) 15 0 20
 
Answer & Explanation Answer: D) 15 0 20

Explanation:
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3 6031
Q:

Match the following.

 

 

A) I – 2, II – 3, III – 1   B) I – 1, II – 3, III – 2  
C) I – 2, II – 1, III – 3   D) I – 3, II – 2, III – 1
 
Answer & Explanation Answer: D) I – 3, II – 2, III – 1

Explanation:
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Filed Under: Biology
Exam Prep: AIEEE , Bank Exams

0 6030
Q:

Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission spectra will be

A) 2 B) 6
C) 5 D) 3
 
Answer & Explanation Answer: B) 6

Explanation:

Number of spectral lines from a state n to ground state is

 

                   n(n-1)/2 = 6

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Filed Under: Physics
Exam Prep: AIEEE

11 6029
Q:

Kilohertz is a unit which measures

A) Electromagnetic radio wave frequencies B) Electric resistance
C) Power used by a current of one ampere D) Voltage
 
Answer & Explanation Answer: A) Electromagnetic radio wave frequencies

Explanation:

The hertz (Hz) is defined as one cycle per second and is a SI unit of frequency. Here kilohertz is also a unit of frequency of waves and is defined as 1000 cycles per second. Radio waves are measured in kilohertz (KHz).

 

Kilohertz_is_a_unit_which_measures1561453991.jpg image

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Filed Under: Physics
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6 6027
Q:

Which observation proves that a cell is a eukaryote?

A) It contains DNA B) It contains ribosomes
C) It has a cell membrane D) It has DNA inside a nucleus
 
Answer & Explanation Answer: D) It has DNA inside a nucleus

Explanation:

Eukaryotic cells all have a nucleus. Eukaryotes are organisms that are multicellular, although there are some examples of single cellular eukaryotes. So eukaryotic cells can be either cell with a nucleus or a eukaryotic organism's cell.

The most important feature to judge whether it has nucleus membrane.

And for other choices, they are the common features of eukaryote and prokaryote.

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Filed Under: Biology
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9 6027