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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
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Q:

The characteristic of ____ is used in the breaking pads of cars.

A) negative effect of friction B) zero effect of friction
C) weight impulse force tension action D) positive effect of friction
 
Answer & Explanation Answer: D) positive effect of friction

Explanation:
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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

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Q:

What does the term Jim Crow refer to? 

A) the civil rights movement of the mid-twentieth century B) northern whites who sympathized with African Americans
C) African American politicians during Reconstruction D) the system of racial segregation in the South after Reconstruction
 
Answer & Explanation Answer: D) the system of racial segregation in the South after Reconstruction

Explanation:
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Q:

Which of the following is not an Indian Pharma Company?

A) Ranbaxy B) Pfizer
C) Cipla D) Nicholas Pirmal
 
Answer & Explanation Answer: D) Nicholas Pirmal

Explanation:
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Filed Under: Business Awareness

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Q:

In commonwealth Games, 2010, india won 101 medals. Out of them, how many medals have been received by team events, women and men respectively?

A) 0, 37, 64 B) 2, 35, 64
C) 1, 37, 63 D) 1, 36, 64
 
Answer & Explanation Answer: B) 2, 35, 64

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Filed Under: Sports

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Q:

What is the purpose of the sigmoid colon?

Answer

Sigmoid colon or pelvic colon is a curved, S-shaped portion of the large intestine which is closest to the rectum and anus.


sigmoid_colon1532669660.jpg image


* It helps to transports fecal matter from the descending colon to the rectum and anus.


 


* It is the final segment of the colon.

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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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