Questions

Q:

A projectile launched at____ degree angle has the greatest range?

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Subject: Physics

3 2448
Q:

The ratio of volume of a cone to that of a cylinder if cylinder radius is reduced by 4 times and its height increased by 8 times of that of the cone, is - 

A) 3:2 B) 2:3
C) 5:7 D) 7:5
 
Answer & Explanation Answer: B) 2:3

Explanation:

Ans. Let radius of the base and height of the cone be ‘r’ & ‘h’ respectively.

Then volume of cone = πr2h/3 For cylinder, radius is reduced by 4 times = r/4 And,  height is increased by 8 folds = 8h Volume of cylinder = πR2H = π(r/4)2 (8h) = (16/8)πr2h = πr2h/2 Ratio of volume of cone to volume of cylinder = (πr2h/3) : (πr2h/2) Or, Ratio = 2 : 3.

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1 2448
Q:

In which year , the distribution of Bharat Ratna award started?

A) 1954 B) 1956
C) 1952 D) 1950
 
Answer & Explanation Answer: A) 1954

Explanation:

The Bharat Ratna is the highest civilian award of the Republic of India. Instituted in 1954, the award is conferred "in recognition of exceptional service/performance of the highest order", without distinction of race, occupation, position, or sex.

bharat_ratna1532341432.jpg image

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Filed Under: Honours and Awards
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3 2448
Q:

Which of these birds cannot fly?

A) Kiwi B) Penguin
C) Ostrich D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:
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Filed Under: Animals and Birds
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9 2447
Q:

Write a program for matrix multiplication in c

Answer

#include <stdio.h>


int main() {


  int a[5][5], b[5][5], c[5][5], i, j, k, sum = 0, m, n, o, p;


  printf( "\nEnter the row and column of first matrix" );


  scanf( "%d %d", &m, &n );


  printf( "\nEnter the row and column of second matrix" );


  scanf( "%d %d", &o, &p );


  if(n!=o) {


      printf( "Matrix mutiplication is not possible" );


      printf( "\nColumn of first matrix must be same as row of second matrix" );


  }


  else {


      printf( "\nEnter the First matrix" );


      for( i=0; i<m; i++ )


      for( j=0; j<n; j++ )


           scanf( "%d", &a[i][j] );


      printf( "\nEnter the Second matrix" );


      for( i=0; i<o; i++ )


      for( j=0; j<p; j++ )


           scanf( "%d", &b[i][j] );


      printf( "\nThe First matrix is\n" );


      for( i=0; i<m; i++ ) {


      printf("\n");


      for( j=0; j<n; j++ ) {


           printf( "%d\t", a[i][j] );


      }


      }


      printf( "\nThe Second matrix is\n" );


      for( i=0; i<o; i++ ) {


      printf("\n");


      for( j=0; j<p; j++ ) {


           printf( "%d\t", b[i][j] );


      }       


      }


      for( i=0; i<m; i++ )


      for( j=0; j<p;j++ )


           c[i][j] = 0;


      for( i=0; i<m; i++ ) { //row of first matrix


      for( j=0; j<p; j++ )  {  //column of second matrix


           sum = 0;


           for( k=0; k<n; k++ )


               sum = sum + a[i][k]*b[k][j];


           c[i][j] = sum;


      }


      }


  }


  printf( "\nThe multiplication of two matrix is\n" );


  for( i=0; i<m; i++ ) {


      printf("\n");


      for( j=0; j<p; j++ ) {


           printf( "%d\t", c[i][j] );


      }


  }


  return 0;


}

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Subject: Programming

0 2447
Q:

What is FtDisk?

Answer

It is a fault tolerance disk driver for Windows NT.

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1 2447
Q:

A shopkeeper mixed two verities of rice at Rs. 40/kg and Rs.60/kg in the ratio 3: 2 and sold the mixture at 10% profit. Find the  price per kg at which he sold the mixture?

A) Rs. 56 B) Rs. 58.8
C) Rs. 54 D) Rs. 52.8
 
Answer & Explanation Answer: D) Rs. 52.8

Explanation:

Ans.  CP of mixture = {(40*3+60*2)/2+3} = 48 SP of the mixture = 1.1 48 =52.8

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Filed Under: English
Exam Prep: CAT , GRE , TOEFL

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Q:

A universal recipient blood group belongs to

A) O B) A
C) B D) AB
 
Answer & Explanation Answer: D) AB

Explanation:

In transfusions of packed red blood cells, individuals with type O Rh D negative blood are often called universal donors. Those with type AB Rh D positive blood are called universal recipients.

The immune system of a person with AB blood will accept blood from all possible donors, whether they have O, A, B, or AB blood. Since both A and B antigens are present in a person with AB blood, the recipient won't reject the blood. The body identifies that blood as "self" rather than "foreign."

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Filed Under: General Science
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