Questions

Q:

The commonly used coolant in refrigerators is

A) Ammonia B) Nitrogen
C) Freon D) Oxygen
 
Answer & Explanation Answer: C) Freon

Explanation:
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Filed Under: Chemistry

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Q:

India's 1st district cooling system will come up in which city?

A) Amaravathi B) Hyderabad
C) Bangaluru D) Noida
 
Answer & Explanation Answer: A) Amaravathi

Explanation:

District cooling system is a well known and energy efficient technology adopted across the world. India's 1st district cooling system will come up in the green city Amaravathi, the capital city of Andhra Pradesh state.

India’s_1st_district_cooling_system_will_come_up_in_which_city1550731233.jpg image

District cooling system (DCS) distributes thermal energy in the form of chilled water from a central source to multiple buildings through a network of underground pipes for use in space cooling. The cooling or heat rejection is usually provided from a central cooling plant, thus eliminating the need for separate systems in individual buildings.

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Filed Under: Indian Geography
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Q:

Write a c program for selection sort.

Answer

include<stdio.h>
int main(){

  int s,i,j,temp,a[20];

  printf("Enter total elements: ");
  scanf("%d",&s);

  printf("Enter %d elements: ",s);
  for(i=0;i<s;i++)
      scanf("%d",&a[i]);

  for(i=0;i<s;i++){
      for(j=i+1;j<s;j++){
           if(a[i]>a[j]){
               temp=a[i];
              a[i]=a[j];
              a[j]=temp;
           }
      }
  }

  printf("After sorting is: ");
  for(i=0;i<s;i++)
      printf(" %d",a[i]);

  return 0;
}

Output:
Enter total elements: 5
Enter 5 elements: 4 5 0 21 7
The array after sorting is:  0 4 5 7 21

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Subject: Programming

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Q:

The first oil well in the world was drilled at 

A) Assam B) Japan
C) Pensylvania D) Former USSR
 
Answer & Explanation Answer: C) Pensylvania

Explanation:

The first oil well was dug in 1859. The oil production has since declined but it retains its name for high grade oil

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Filed Under: World Geography

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Q:

Which two atoms form an ionic bond?

Answer

Ionic bonding is a type of chemical bond in which valence electrons are lost from one atom and gained by another.. This bond generates two oppositely charged ions.


In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.


 


Example ::


One example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it. The ions produced are oppositely charged and are attracted to one another due to electrostatic forces.

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Subject: Chemistry Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

Exercise improves memory and learning.

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

Explanation:

Exercise can boost your memory and thinking skills by improvising alertness, attention and motivation.

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Subject: General Science
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Q:

Plants wilt due to excess of

A) Photosynthesis B) Absorption
C) Transpiration D) None of the above
 
Answer & Explanation Answer: C) Transpiration

Explanation:

Plants wilt due to excess of Transpiration.

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Q:

Photosynthesis contributes to plant growth by

A) taking in carbon dioxide and making carbohydrates (sugars) B) converting sugar to oxygen and water
C) taking in oxygen and making wood D) synthesizing carbon dioxide and making cellulose
 
Answer & Explanation Answer: A) taking in carbon dioxide and making carbohydrates (sugars)

Explanation:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms activities.

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Filed Under: General Science
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