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Q:

The ODBC core API consists of which of the following functions?

A) Commit or rollback transactions only B) Connect to data sources only
C) Connect to data sources with driver-specific information only D) Both 1 and 2 above are in the OBDC core API.
 
Answer & Explanation Answer: D) Both 1 and 2 above are in the OBDC core API.

Explanation:
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Filed Under: Database

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Q:

A convex mirror is used to form an image of a real object. The image

A) is diminished in size B) is erect
C) always lies between the pole and the focus D) all of the above
 
Answer & Explanation Answer: D) all of the above

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Filed Under: Physics

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Q:

What is the oxidation number of carbon in NaHCO3?

A) -4 B) -3
C) +4 D) +2
 
Answer & Explanation Answer: C) +4

Explanation:

The given compound is NaHCO3 Sodium bicarbonate which is commonly known as Baking soda.

Oxidation numbers are the charges on ions. When a neutral atom loses electrons it becomes positively charged. When a neutral atom gains electrons it becomes negatively charged.

 

Here the C represents the oxidation state of carbon in this compound. Compounds are electrically neutral, which is why we set the sum of the oxidation states equal to zero.

Sodium has a +1 oxidation state. Hydrogen has a +1 oxidation state. Oxygen has a -2 oxidation state. There are three oxygen atoms, which means the total oxidation state provided by both oxygen ions is -6. Adding up these oxidation states we get:

1 + 1 + (-6) + C = 0

-4 + C = 0

=> C = 4


This means the oxidation state of carbon in this compound is +4.

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Filed Under: Chemistry
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Q:

Who among the following is the first Asian Winner of Nobel Prize

A) Mother Teresa B) Rabindranath Tagore
C) C.V.Raman D) None of these
 
Answer & Explanation Answer: B) Rabindranath Tagore

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Filed Under: Honours and Awards

3 5405
Q:

The payback period can become an important issue when a large scope project is developed over several years. Maureen has been assigned the responsibility of calculating the payback period for her project that is to be completede in 3 years. The internal rate of return(IRR) is 7% and the annual savings will be $800,000 per year. The total cost is $4,000,000 and the rate of return during this time period is 3%. What is the payback period of Maureen's project?

A) 3 years B) 4 years
C) 5 years D) 13.3 years
 
Answer & Explanation Answer: C) 5 years

Explanation:

The payback period is how long it takes to recoup your investment. In this example, the cost was $4,000,000 and the savings was $800,000 per year. $4,000,000/$800,000 = 5. Therefore, Answer A, B and D are incorrect.

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Filed Under: PMP Certification

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Q:

Irrigation canals are generally aligned along

A) Contour line B) Straight line
C) Ridge line D) Valley line
 
Answer & Explanation Answer: C) Ridge line

Explanation:

Irrigation_canals_are_generally_aligned_along1556259625.png image

 

A ridge ine is a line formed along the highest points of a mountain ridge.

 

Irrigation canals are generally aligned along ridge lines.

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Filed Under: Indian Geography
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Q:

When was the mandate that a candidate at an election should file with his nomination papers an affidavit recording the particulars of the spouse and the dependents, enforced at a General Electon for the first time?

A) Assembly elections held in Madhya Pradesh/chhattisgarh in Dec.2003 B) Assembly election held in Mizoram in Nov.2003
C) Assembly elections held in Himachal Pradesh in 2003 D) Assembly elections held in Rajasthan/Delhi in Dec.2003
 
Answer & Explanation Answer: C) Assembly elections held in Himachal Pradesh in 2003

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Filed Under: Indian Politics

9 5403
Q:

Elisa test is employed to diagnose

A) HIV B) Cancer
C) Tuberculosis D) Polio
 
Answer & Explanation Answer: A) HIV

Explanation:

ELISA - Enzyme-Linked Immuno Sorbent Assay.

test11528447143.jpg image

 

An ELISA test may be used to diagnose: HIV, which causes AIDS.

 

An ELISA also called EIA, is a test that detects and measures antibodies in your blood. Antibodies are proteins that your body produces in response to harmful substances called antigens.

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Filed Under: General Awareness
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