Questions

Q:

The mass of a mole of NaCl is the

A) 58.44 gm/mol B) 57.25 gm/mol
C) 56.31 gm/mol D) 59.14 gm/mol
 
Answer & Explanation Answer: A) 58.44 gm/mol

Explanation:

To get the mass of a mole of NaCl, we need to add the molar atomic weights of the individual elements i.e, Na and Cl

Atomic weights of Na = 22.99 gm/mol  Cl = 35.45 gm/mol

 

Now, mass of a mole of NaCl = 22.99 + 35.45 = 58.44 gm/mol.

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Filed Under: Chemistry
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Q:

The International Human Rights Convention adopted by the United Nations in 1990 relates to

A) Children B) Dasabled
C) Stateless Persons D) Migrant workers
 
Answer & Explanation Answer: A) Children

Explanation:
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Filed Under: World Organisations

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Q:

Number of alary muscles in cockroach

A) 12 B) 12 pairs
C) 6 D) 24 pairs
 
Answer & Explanation Answer: B) 12 pairs

Explanation:
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Filed Under: Animals and Birds
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Q:

Explain the difference between fixed and flexible budgets ?

Answer

1. A fixed budget is established for a specific level of activity whereas flexible budget is prepared for various levels of activity.


2. Fixed budget cannot be changed after the period commences, whereas a flexible budget can be changed after the period commence.


3. Fixed budget is more suitable for fixed expenses whereas flexible budget takes both fixed as well as variable expenses in account.


4. Fixed budget includes only fixed costs, whereas a flexible budget includes fixed costs, variable costs and semi variable costs.


5. Fixed budget is mainly used in planning stage whereas flexible budget is used in controlling stage.

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Subject: Finance Exam Prep: Bank Exams , CAT
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Q:

On election day, voters for President are really voting for

A) Electors B) President
C) The speaker of the House D) Both B & C
 
Answer & Explanation Answer: A) Electors

Explanation:

On election day, voters for The President are really voting for the electors who can elect President.

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Filed Under: Indian Politics
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Q:

Write a c program for merge sort.

Answer

#include
#define MAX 50

void mergeSort(int arr[],int low,int mid,int high);
void partition(int arr[],int low,int high);

int main(){
  
    int merge[MAX],i,n;

    printf("Enter the total number of elements: ");
    scanf("%d",&n);

    printf("Enter the elements which to be sort: ");
    for(i=0;i<n;i++){
         scanf("%d",&merge[i]);
    }

    partition(merge,0,n-1);

    printf("After merge sorting elements are: ");
    for(i=0;i<n;i++){
         printf("%d ",merge[i]);
    }

   return 0;
}

void partition(int arr[],int low,int high){

    int mid;

    if(low<high){
         mid=(low+high)/2;
         partition(arr,low,mid);
         partition(arr,mid+1,high);
         mergeSort(arr,low,mid,high);
    }
}

void mergeSort(int arr[],int low,int mid,int high){

    int i,m,k,l,temp[MAX];

    l=low;
    i=low;
    m=mid+1;

    while((l<=mid)&&(m<=high)){

         if(arr[l]<=arr[m]){
             temp[i]=arr[l];
             l++;
         }
         else{
             temp[i]=arr[m];
             m++;
         }
         i++;
    }

    if(l>mid){
         for(k=m;k<=high;k++){
             temp[i]=arr[k];
             i++;
         }
    }
    else{
         for(k=l;k<=mid;k++){
             temp[i]=arr[k];
             i++;
         }
    }
  
    for(k=low;k<=high;k++){
         arr[k]=temp[k];
    }
}


Sample output:

Enter the total number of elements: 5
Enter the elements which to be sort: 2 5 0 9 1
After merge sorting elements are: 0 1 2 5 9

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Subject: Programming

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Q:

Amazon Rainforest Forests are located in which continent?

A) South America B) Australia
C) North America D) Antarctica
 
Answer & Explanation Answer: A) South America

Explanation:

Amazon Rainforest Forests are located in South America.

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Q:

The mass number of an isotope of an element is 298. If its nucleus has 189 neutrons, what is its atomic number?

A) 298 B) 189
C) 109 D) 487
 
Answer & Explanation Answer: C) 109

Explanation:
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