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Q:

When a piece of pure silicon is doped with aluminium, then

A) the conductivity of the doped silicon piece will remain the same B) the doped silicon piece will become n-type
C) the doped silicon piece will become p-type D) the resistivity of the doped silicon piece will increase
 
Answer & Explanation Answer: C) the doped silicon piece will become p-type

Explanation:

p type of semiconductor is obtained when Silicon is doped with a trivalent impurity like Aluminium. Aluminium is a p-type dopant, which means that when a semiconductor i.e. silicon is doped with aluminium, it creates a hole (positively charged carrier) by accepting an electron from the silicon atom. Electrical conductivity of semiconductors increasesand resistivity remains the same

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

The Nobel Prize for chemistry for the year 2011 has been awarded to

A) Saul Perlmutter,Brain P. Schmid & Adam G. Riess B) Bruce A.Beutler,Jules A. Hoffmann
C) Christopher A. Sims & Thomas J. Sargent D) Dan Schechtman
 
Answer & Explanation Answer: D) Dan Schechtman

Explanation:
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Q:

Australia - based core banking software, Financial Network Services (FNS) has been acquired by an indian comapny. Identify the company from the choices given below.

A) Wipro Technologies B) Mindtree
C) Infosys D) TCS
 
Answer & Explanation Answer: D) TCS

Explanation:
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Filed Under: Business Awareness

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Q:

Database is a collection of concepts that can be used to describe the structure of a database

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

Explanation:

Database provides necessary means to achieve this abstraction. By structure of a database we mean the data types, relations, and constraints that should hold on the data.

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Subject: Database
Job Role: Database Administration

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Q:

When a running car stops suddenly, the passengers tends to lean forward because of

A) Gravitational force B) Inertia of motion
C) Law of conservation of mass D) Both B & C
 
Answer & Explanation Answer: B) Inertia of motion

Explanation:

When a running car stops suddenly, the passengers tends to lean forward because of Inertia of motion.

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Q:

According to the 2011 census, the Indian State that has the dubious distinction of having the worst male-female ratio was ______. 

A) Kerala B) Uttar Pradesh
C) Delhi D) Haryana
 
Answer & Explanation Answer: D) Haryana

Explanation:
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Filed Under: General Awareness
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Q:

According to a survey, which country has become the second largest smartphone market in the world?

A) Japan B) China
C) India D) USA
 
Answer & Explanation Answer: C) India

Explanation:

According to a Report by analyst firm Canalys, India has become the second largest smartphone market in the world.

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Q:

Which state government has launched poshan Abhiyan, to eradicate malnutrition?

A) Gujarat B) Maharashtra
C) Mizoram D) Tripura
 
Answer & Explanation Answer: A) Gujarat

Explanation:
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