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Q:

A column defined as UNIQUE can contain Nulls while a column defined as PRIMARY KEY can't contain Nulls

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Because a table can have only one primary key

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Subject: Oracle Certification
Job Role: Database Administration

1 4496
Q:

Q = mcdT refers to

A) Enthalpy formula B) Heat Transfer formula
C) Specific Heat formula D) Heat of Vaporization
 
Answer & Explanation Answer: C) Specific Heat formula

Explanation:

Q = mc∆T refers to Specific Heat formula.

 

When heat energy is added to a substance, the temperature will change by a certain amount.

The relationship between heat energy and temperature is different for every material, and the specific heat is a value that describes how they relate.

 

Q = mc∆T

 

Q = heat energy (Joules, J)

m = mass of a substance (kg)

c = specific heat (units J/kg∙K)

∆T = change in temperature (Kelvins, K)

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Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , IT Trainer

2 4495
Q:

Which action is considered a primary function of State government?

A) supervising elected federal government officials B) regulating political parties and the media
C) organizing a local military to provide security D) enforcing laws regarding the public safety
 
Answer & Explanation Answer: D) enforcing laws regarding the public safety

Explanation:

The primary function of State government is enforcing laws regarding the public safety.

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Filed Under: Indian Politics
Exam Prep: Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

4 4493
Q:

Hepatitis virus destroys the cells and may cause the disease

A) Jaundice B) Malaria
C) Typhoid D) Elephantiasis
 
Answer & Explanation Answer: A) Jaundice

Explanation:
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Filed Under: Biology

7 4493
Q:

Who has been appointed as Chairman and Managing Director of Hindustan Copper Limited (HCL) in 2017 ?

A) Debasis Jana B) Sankara Rao
C) Dev Patel D) Santosh Sharma
 
Answer & Explanation Answer: D) Santosh Sharma

Explanation:
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Filed Under: General Awareness
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

7 4491
Q:

Which of the following is the mixture

A) distilled water B) gasoline
C) liquified petroleum gas D) both (b) & (c)
 
Answer & Explanation Answer: D) both (b) & (c)

Explanation:
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Filed Under: Chemistry

3 4490
Q:

The invasion of which of these countries in 1939 widely regarded to have started World War II ?

A) Italy B) Germany
C) Poland D) France
 
Answer & Explanation Answer: C) Poland

Explanation:
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Filed Under: World History

6 4489
Q:

Which Airport ranked first in Customer Satisfaction Index Survey in India ?

A) Udaipur Airport B) Raipur Airport
C) Amritsar Airport D) Dehradun Airport
 
Answer & Explanation Answer: B) Raipur Airport

Explanation:

Raipur’s Swami Vivekananda Airport was ranked first in Customer Satisfaction Index (CSI) Survey among 49 airports in the country. It has achieved 4.84 score on a five point scale index. It was followed by Udaipur (2nd), Amritsar (3rd) and Dehradun (4th) airports which have scored 4.75, 4.74 and 4.73 respectively. This is third consecutive time in the past two years, Raipur airport has received this recognition.

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Filed Under: General Awareness

11 4486