Questions

Q:

What is the oxidation number of sulfur in H2S?

A) 2 B) -2
C) 1 D) -1
 
Answer & Explanation Answer: B) -2

Explanation:

The sum of the oxidation numbers in a compound must equal zero. In the compound hydrogen sulfide, H2S, the two hydrogen atoms have an oxidation number of +1, for a total of +2.

 What_is_the_oxidation_number_of_sulfur_in_H2S1556279499.jpg image

Therefore, the oxidation number of sulfur in the compound is -2, and the sum of the oxidation numbers is 0.

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Q:

Vendor-created program modifications are called ________

A) patches B) antiviruses
C) holes D) fixes
 
Answer & Explanation Answer: A) patches

Explanation:
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Q:

Which one of the following Cricketers has been declared by the ICC as 'Cricketer of the Twentieth Century '

A) Sachin Tendulkar B) Kapil Dev
C) Rahul Dravid D) Anil Kumble
 
Answer & Explanation Answer: B) Kapil Dev

Explanation:
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Q:

What will output when you compile and run the following code?

#include <stdio.h>
struct student
{

int roll;
int cgpa;
int sgpa[8];

};

void main()
{

struct student s = { 12,8,7,2,5,9 };
int *ptr;
ptr = (int *)&s;
clrscr();
printf( "%d", *(ptr+3) );
getch();

}

A) 8 B) 7
C) 2 D) Compiler error
 
Answer & Explanation Answer: C) 2

Explanation:
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Q:

'Madhubani', a style of folk paintings, is popular in which of the following states in India?

A) Uttar Pradesh B) Rajasthan
C) Madhya Pradesh D) Bihar
 
Answer & Explanation Answer: D) Bihar

Explanation:
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Q:

Explain Belady's Anomaly?

Answer

Also called FIFO anomaly. Usually, on increasing the number of frames allocated to a process virtual memory, the process execution is faster, because fewer page faults occur. Sometimes, the reverse happens, i.e., the execution time increases even when more frames are allocated to the process. This is Belady's Anomaly. This is true for certain page reference patterns.

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Q:

A number of cats got together and decided to kill between them 999919 rats. Every cat killed an equal number of rats. Each cat killed more rats than there were cats. How many rats do you think that each cat killed ?

A) 1009 B) 991
C) 2000 D) 1000
 
Answer & Explanation Answer: A) 1009

Explanation:

Given total number of rats = 999919

 

999919 = 1000000 - 81 = 10002 - 92 = (1000+9)(1000-9) = 1009 x 991.
Since there were more rats than there were cats, 991 cats killed 1009 rats each.

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Q:

Which file starts MS Word?

A) word.exe B) msword.exe
C) word2003.exe D) winword.exe
 
Answer & Explanation Answer: D) winword.exe

Explanation:
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