Questions

Q:

which of the following represents a set of properties that guarantee that database transactions are processed reliably in computer science ?

A) Buffer Cache B) ACID
C) Foreign Key D) None
 
Answer & Explanation Answer: B) ACID

Explanation:

ACID means (Atomicity, Consistency, Isolation, Durability) is a set of properties of database transactions intended to guarantee validity even in the event of errors, power failures, etc.

In the context of databases, a sequence of database operations that satisfies the ACID properties and, thus, can be perceived as single logical operation on the data, is called a transaction. For example, a transfer of funds from one bank account to another, even involving multiple changes such as debiting one account and crediting another, is a single transaction.

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Q:

A dynamometer wattmeter can be used for

A) Only Direct Current B) Only Active Current
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:

A dynamometer wattmeter can be used for measuring both A.C and D.C currents.

a_dynamometer_wattmeter_can_be_used_for1553690092.jpg image

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Q:

What are different functional units in 8086?

Answer

Bus Interface Unit and Execution unit, are the two different functional units in 8086.

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Subject: Hardware

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Q:

Another name for the activated complex is

A) Transmission state B) Energy barrier
C) Collision group D) Transition state
 
Answer & Explanation Answer: D) Transition state

Explanation:

The minimum amount of energy required for a particular reactants to convert into products and is called as Activation Energy.

 

Another_name_for_the_activated_complex_is1559538681.jpg image

 

This activation complex is also termed as Transition State because according to Transition State Theory at transition state the existing bonds tend to increase in length and become weaken while, the new forming bonds tend to decrease in length and start becoming stronger.

Hence, the activated complex is in transition between reactants and products.

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Filed Under: Chemistry
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Q:

Cytoplasm contains all the organelles.

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

Explanation:

Cytoplasm does not contains all the organelles.

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Subject: Biology
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Q:

Air is said to be saturated when

A) its pressure is minimum B) it contains the maximum content of water vapour
C) its thickness is maximum D) it blows over the barren land
 
Answer & Explanation Answer: B) it contains the maximum content of water vapour

Explanation:

Air is said to be saturated when it contains the maximum content of water vapour.

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Q:

In Excel, a data series is defined as what?

A) A collection of related data B) Chart
C) Cell reference D) A division of results
 
Answer & Explanation Answer: A) A collection of related data

Explanation:

A data series which is represented in rows or columns or both in a excel work sheet is a collection of the related data.

 

in_excel_a_data_series_is_defined_as_what1553927674.jpg image

 

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Q:

Who among the following is the  teen pop singer & musician, over 33 million followers on Twitter?

A) Halle Berry B) Bernardo Bertolucci
C) Justin Bieber D) William Blake
 
Answer & Explanation Answer: C) Justin Bieber

Explanation:
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