Questions

Q:

What two scientists established the structure of dna?

A) Rosalind Franklin and Maurice Wilkins B) James Watson and Francis Crick
C) Rosalind Franklin and Francis Crick D) James Watson and Maurice Wilkins
 
Answer & Explanation Answer: B) James Watson and Francis Crick

Explanation:

In the early 1950s two scientists, Rosalind Franklin and Maurice Wilkins, studied DNA using x-rays. Franklin produced an x-ray photograph that allowed two other researchers, James Watson and Francis Crick to work out the 3D structure of DNA. The structure of DNA was found to be a double helix.

Report Error

View Answer Report Error Discuss

Filed Under: Inventions
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

0 2821
Q:

Suppose voltage V is applied across a resistance R. The power dissipated in the resistance is P. Now the same voltage V is applied across a parallel combination of three equal resistors each of resistance R. Then the power dissipated in the second case will be

A) P B) 3P
C) p/3 D) 2p/ 3
 
Answer & Explanation Answer: B) 3P

Explanation:

P= I^2.R where, I= Current, P= Electric Power, R=Resistance. Here all the resistance is put in parallel combination and in parallel combination the value of Resistance decreases and dissipation of power increase, hence 3 times more power will be dissipated(3P).

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

0 2820
Q:

Where do the greenhouse gases come from?

A) Agriculture B) Land-use change
C) Fosssil fuels D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Most of the emissions of greenhouse gases (GHG) come primarily from burning fossil fuels (coal, hydrocarbon gas liquids, natural gas, and petroleum) for energy use and the major greenhouse gas is of course carbon dioxide (CO2) which comes from burning fossil fuels and land-use change.

But methane (CH4) and nitrous oxide (N2O), which mostly come from agriculture and waste, are also significant GHGs and shouldn't be discounted.

Report Error

View Answer Report Error Discuss

Filed Under: General Awareness
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

2 2820
Q:

Software designed for a specific purpose is called as

A) System software B) Application software
C) Specific software D) None of the above
 
Answer & Explanation Answer: B) Application software

Explanation:

Software designed for a specific purpose is called as Application software.

Report Error

View Answer Report Error Discuss

Filed Under: Computer
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

5 2820
Q:

Which of the following is a hydrocarbon?

A) C2H6 B) C3H8
C) CH4 D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The simplest organic compounds contain only the elements carbon and hydrogen, and are called hydrocarbons.

Here all the given options are hydrocarbons.

Report Error

View Answer Report Error Discuss

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

0 2819
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.

Report Error

View Answer Report Error Discuss

Filed Under: IBM Certification
Job Role: Analyst , IT Trainer

13 2819
Q:

What are different functional units in 8086?

Answer

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

Report Error

View answer Workspace Report Error Discuss

Subject: Hardware

2 2819
Q:

Relationships among people are

A) not influenced by people's ideas and attitudes. B) something that must be maintained to stay healthy and strong.
C) one of two types—social or working. D) usually simple and easy to understand.
 
Answer & Explanation Answer: B) something that must be maintained to stay healthy and strong.

Explanation:

Relationships among people are to be maintained in such a way that the people must stay healthy and to become strong enough.

Report Error

View Answer Report Error Discuss

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

2 2818