Questions

Q:

Data integrity constraints are used to

A) Ensure that duplicate records are not entered into the table B) Prevent users from changing the values stored in the table
C) Control who is allowed access to the data D) Improve the quality of data entered for a specific property like table column
 
Answer & Explanation Answer: D) Improve the quality of data entered for a specific property like table column

Explanation:

Integrity constraints are used to ensure accuracy and consistency of data in a relational database. Data integrity is handled in a relational database through the concept of referential integrity. Many types of integrity constraints play a role in referential integrity (RI).

 

Hence, Data integrity constraints are used to Improve the quality of data entered for a specific property i.e, table column.

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Q:

Which year did India hosted and participated in Asian games for the first time ?

A) 1930 B) 1933
C) 1948 D) 1951
 
Answer & Explanation Answer: D) 1951

Explanation:
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Filed Under: Sports
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Q:

Tirupati temple of Lord Venkateswara is situated in which state

Answer

Andhra Pradesh

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Subject: Indian Culture

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Q:

Nitrogen Fixation is carried out primarily by

A) Plants B) Humans
C) Consumers D) Bacteria
 
Answer & Explanation Answer: D) Bacteria

Explanation:

The process by which bacteria convert nitrogen gas (N2) into ammonia (NH3) is called Nitrogen Fixation.

 

The conversion of nitrogen from one form to another in the nitrogen cycle is carried out primarily by Nitrogen Fixing Bacteria such as Azotobacter.

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Q:

Chemical Co- ordination in the body is brought out by

A) Blood B) Lymph
C) Enzymes D) Hormones
 
Answer & Explanation Answer: D) Hormones

Explanation:
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Q:

Who is the Creator of the popular cartoon characters Mandrake the Magician and the Phantom?

Answer

Lee Falk

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Q:

What belongs to you but is used more by others?

A) Clothes B) Cosmetics
C) Shoes D) Name
 
Answer & Explanation Answer: D) Name

Explanation:

Yep! It's your NAME that belongs to you but is used more by others than you.

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Q:

Which of these rules are applicable for naming covalent compounds?

A) nonmetal name + nonmetal name + suffix –ide B) nonmetal name + nonmetal name + suffix –ite
C) metal name + nonmetal name + suffix –ide D) metal name + nonmetal name + suffix –ite
 
Answer & Explanation Answer: C) metal name + nonmetal name + suffix –ide

Explanation:

Simple covalent compounds are generally named by using prefixes metal name + nonmetal name + suffix –ide to indicate how many atoms of each element are shown in the formula. Also, the ending of the last (most negative) element is changed to -ide. The prefixes used are mono-, di-, tri-, tetra-, penta-, hexa-, and so forth.

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Filed Under: Chemistry
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