Questions

Q:

Which solution has the highest pH?

A) 50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq) B) 50.0 mL 0.0500 M sodium hydroxide, NaOH (aq)
C) 50.0 mL 0.0500 M nitric acid, HNO3 (aq) D) 50.0 mL 0.0500 M nitrous acid, HNO2 (aq)
 
Answer & Explanation Answer: A) 50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq)

Explanation:

50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq) has the highest pH value.

Sodium hydroxide and Calcium hydroxide are strong bases so they completely ionize in solution. Because they ionize at the same rate, and Calcium hydroxide has the higher pH calculated, then Calcium hydroxide, in fact, has the highest pH.

Nitric acid is a strong acid, so it completely ionizes in water. Whilst nitrous acid is a weak acid. Therefore, the nitric acid solution has the LOWEST ph.

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Filed Under: Chemistry
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Q:

A spreadsheet contains

A) Rows B) Columns
C) Both A & B D) Tables
 
Answer & Explanation Answer: C) Both A & B

Explanation:

A_spreadsheet_contains1553603758.png image

 

A spreadsheet contains both rows and columns.

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Filed Under: Computer
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Q:

Safdar Hashmi is a name associated with

A) Drawing and Painting B) Journalism
C) Instrumental Music D) None of these
 
Answer & Explanation Answer: D) None of these

Explanation:

Correct Answer : Safdar Hashmi is a name associated with Drama

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Filed Under: Famous Personalities

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Q:

Tochi, Gilgit and Hunza are tributaries of

A) Ganga B) Indus
C) Brahmaputra D) Yamuna
 
Answer & Explanation Answer: B) Indus

Explanation:
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Filed Under: Indian Geography

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Q:

The term ' Regur ' is used for

A) Alluvial soil B) Peat soil
C) Laterite soil D) Black soil
 
Answer & Explanation Answer: D) Black soil

Explanation:
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Filed Under: Indian Geography

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Q:

Which of these is not a function of the kidneys?

A) The kidneys regulate the plasma volume B) The kidneys help to regulate blood pressure
C) The kidneys help control the rate of red blood cell production D) The kidneys deactivate vitamin D and stimulate the activity of osteoclasts
 
Answer & Explanation Answer: D) The kidneys deactivate vitamin D and stimulate the activity of osteoclasts

Explanation:

The kidneys deactivate vitamin D and stimulate the activity of osteoclasts is wrong among the functions of kidneys.

 

The kidneys are two bean-shaped organs in the renal system. They help the body pass waste as urine. They also help filter blood before sending it back to the heart.

 

The kidneys perform many crucial functions, including:

  • maintaining overall fluid balance.
  • regulating and filtering minerals from the blood.
  • filtering waste materials from food, medications, and toxic substances.
  • creating hormones that help produce red blood cells, promote bone health, and regulate blood pressure.
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Filed Under: Biology
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10 8939
Q:

Productivity is the combination of

A) efficiency and energy B) efficiency and effectiveness
C) efficiency and attitude D) effectiveness and resources
 
Answer & Explanation Answer: B) efficiency and effectiveness

Explanation:

Productivity is a result of the way that a business operates – the result of the way that its people, business processes, different functional units and suppliers come together to meet the needs and wants of its customers.

Productivity is the combination of intelligent planning and focused efforts and hence, it is a combination of Efficiency and Effectiveness.

Efficiency :


Efficiency is an internal measure of performance for companies that shows how well the company converts inputs into outputs. The more the ratio of outputs to inputs approaches 100 percent, the better the efficiency of the process will be. In simple terms, it is “doing things right” and comes from proper harnessing of time, cost and efforts.

Effectiveness :


Organizational effectiveness is an external measure of performance and indicates how well an organization fulfills the demands of various organizational stakeholders. Simply put, it is “doing the right things."

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Filed Under: Marketing and Sales
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Q:

What would be the output of the following program?

main()

{

    extern int fun ( float );

    int a;

    a = fun ( 3. 14 );

    printf ("%d", a);

}

int fun ( aa )

float aa ;

{

     return ( (int) aa );

}

Answer

Error occurs because we have mixed the ANSI prototype with K & R style of function definition.


When we use ANSI prototype for a function and pass a float to the function it is promoted to a double. When the function accepts this double into a float a type mismatch occurs hence the error.


The remedy for this error could be to define the function as :


int fun (float aa)


{


  ....


}

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Subject: Programming

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