Questions

Q:

The freezing point of water at 760mm pressure is

A) 0 K B) 273 K
C) 273 C D) -273 C
 
Answer & Explanation Answer: B) 273 K

Explanation:

K is degree kelvin

Zero K corresponds to -273  K = C + 273

The freezing point of water being 0 C, on the kelvin scale it is 0 C + 273 K

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Filed Under: Chemistry

12 10080
Q:

Sheila works 8 hours per day on Monday, Wednesday and Friday, and 6 hours per day on Tuesday and Thursday. She does not work on Saturday and Sunday. She earns $324 per week. How much does she earn in dollars per hour?

A) 11 B) 10
C) 9 D) 8
 
Answer & Explanation Answer: C) 9

Explanation:

Total hours worked = 8 x 3 + 6 x 2 = 36

Total earned = 324. Hourly wage = 324 / 36 = 9

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2 10075
Q:

The DBA can set the registry variable DB2_HASH_JOIN on or off because:

A) hash joins may require more resources to run. B) hash joins are not used unless outer joins are requested.
C) If hash joins are enabled, no other join method can be used. D) Hash joins are only needed when the tables are portioned using hash keys.
 
Answer & Explanation Answer: A) hash joins may require more resources to run.

Explanation:
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Filed Under: IBM Certification

28 10074
Q:

The world's largest biofuel plant with production capacity of 110 million liters of fuel annually has been set up in 

A) China B) India
C) Brazil D) USA
 
Answer & Explanation Answer: C) Brazil

Explanation:
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Filed Under: General Awareness

53 10067
Q:

Veto power is not possessed by

A) U.K B) U.S.A
C) Rrussia D) West Germany
 
Answer & Explanation Answer: D) West Germany

Explanation:
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Filed Under: World Organisations

22 10066
Q:

How do you rate your patience and people friendliness?

Answer

When you are applying for a job at a call center you should know that there will be moments when unsatisfied customers will get angry on you. The key here is to focus on what is the purpose of the call, maintain your calmness and be polite.


As an answer to this question, you can say that you would rate your level of patience and people friendliness above average. You can back it up with an example from your personal or professional life. 

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Subject: Call Center

11 10050
Q:

Which of these molecules are polar? Check all that apply.

A) SO2 B) CH2Cl2
C) PCl3 D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

   1) SO2                  2) CH2Cl2                3) PCl3

polar1525846214.jpg image

How to check the given molecules are polar or non polar :

If the electronegativity of the two bonded atoms are different then the bond is polar. Although, some molecules contain polar bonds, the molecule may be non-polar. If the polarity of all the bonds present in the molecule are cancel each other then molecule is non-polar.

 

In the given options,

SO2  is polar because the dipole moments on the O do not cancel.

PCl3  is polar because the P-Cl bonds do not cancel out.

CH2Cl2  polar because the C-Cl bonds do not cancel.

 

Hence, in brief, Polar molecules are molecules with net dipole due to the presence of partial positive and partial negative charge.

For example, water is a polar molecule that has partial positive and partial negative charge on it. CO2 is a non polar compound.

 

Therefore, all the given options SO2, CH2Cl2 and PCl3 are Polar molecules.

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , GATE
Job Role: Analyst , Bank Clerk , Bank PO

5 10045
Q:

Prof. Amartya Sen has earned worldwide distinction in which of the following fields/areas

A) Economics B) Geology
C) Biochemistry D) Astrophysics
 
Answer & Explanation Answer: A) Economics

Explanation:
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Filed Under: Famous Personalities

20 10029