Questions

Q:

A spring is an example of which of these

A) Newton's 3rd law B) Hooke's law
C) Newton's 1st law D) Conservation of mass law
 
Answer & Explanation Answer: B) Hooke's law

Explanation:

When you compress or stretch a spring, as soon as the stress is relieved, the spring attains its normal shape instantly. Its Elastic potential energy helps it do so. Generally, these elastic substances follow the Hooke’s law.

 

According to this Law, the force needed to change the shape of spring is proportional to the displacement of the spring. The displacement referred here is how far the spring is compressed or stretched from its normal shape. Mathematically, Hook’s Law can be summarised as F= – k x. Here ‘k’ is the spring constant and ‘x’ is the displacement.

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Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT
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Q:

What is the world’s oldest surviving republic?

Answer

San Marino

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Subject: World History

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Q:

India changed over to the decimal system of coinage in

A) 1947 April B) 1957 April
C) 1956 April D) 1949 April
 
Answer & Explanation Answer: B) 1957 April

Explanation:

India switched from the rupee, pie system to decimal currency on 1 April 1957. The decimalisation of currencies is the process of converting each country's currency from its previous non-decimal denominations to a decimal system, with one basic unit of currency and one or more sub-units, such that the number of sub-units in one basic unit is a power of 10, most commonly 100).


In India, Pakistan, and other places where a system of 1 rupee = 16 annas = 64 paise = 192 pies was used, the decimalisation process defines 1 naya paisa = ​1⁄100 rupee.

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Filed Under: Indian History
Exam Prep: AIEEE , Bank Exams , CAT
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Q:

Improve the following code using typedef.

struct node

{

      int data1;  float data2;

       struct node *left;

       struct node *right;

};

struct node *ptr;

ptr = (struct node *) malloc (sizeof (struct node) ); 

Answer

typedef struct node * treeptr


typedef struct node


{


         int data1;


         float data2;


         treeptr *left;


         treeptr *right;


}treenode;


treeptr ptr;


ptr = ( treeptr ) malloc ( sizeof ( treenode ) );

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Subject: Programming

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Q:

Which of the following tools can be used to identify inefficient SQL statements without executing them?

A) QMF B) Task Center
C) Visual Explain D) Development Center
 
Answer & Explanation Answer: C) Visual Explain

Explanation:
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Filed Under: IBM Certification

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Q:

Which of the following is the best conductor of electricity?

A) Aluminium B) Gold
C) Silver D) Copper
 
Answer & Explanation Answer: C) Silver

Explanation:

silver is the best conductor of electricity.

When compared to remaining 3 metals, as Silver having more number of free electrons in its valency shell it is the good conductor of electricity.

Conductors Thermal Conductivity @ 25degree C

Silver --- 429
Copper --- 401
Gold --- 310
Aluminium --- 250

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Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

Which of the following terms is used to describe as computer  Malware ?

A) Spartan B) Persian
C) Roman D) Trojan
 
Answer & Explanation Answer: D) Trojan

Explanation:
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Filed Under: General Awareness

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Q:

Lala lajapathi rai is the author of the book

A) India Divided B) Hind Swaraj
C) Unhappy India D) Mother India
 
Answer & Explanation Answer: C) Unhappy India

Explanation:
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Filed Under: Books and Authors

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