Questions

Q:

Which of the following is true about veins?

A) Veins carry blood away from the heart, while arteries carry blood to the heart. B) Veins are more muscular than arteries.
C) Veins have valves; arteries do not. D) Veins have a smaller diameter lumen than arteries.
 
Answer & Explanation Answer: C) Veins have valves; arteries do not.

Explanation:

Veins are blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart.

 

Veins are less muscular than arteries and are often closer to the skin. There are valves in most veins to prevent backflow.

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Filed Under: Biology
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Q:

What happens when two atoms form a chemical bond?

A) Two atoms fuse together to form a chemical bond B) The atoms share or transfer electrons
C) A chemical bond forms when two atoms transfer or share protons to achieve a stable nucleus D) Like charges in the atoms cause them to stick together
 
Answer & Explanation Answer: B) The atoms share or transfer electrons

Explanation:

All chemistry is based on sharing electrons. A chemical bond forms when two atoms transfer or share outer electrons to complete their outer shells.

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Filed Under: Chemistry
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Q:

Indian Oil Corporation, the nation's largest fuel retailer, has started selling the convenient 5-kg cooking gas(LPG) cylinder at kirana stores and supermarkets. The sale of these cylinders has not been launched in which of the following cities?

A) Bangalore B) Chennai
C) Gorakhpur D) Pune
 
Answer & Explanation Answer: D) Pune

Explanation:
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Filed Under: General Awareness

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Q:

With what subject to the Article 5 to 11 of the constitution of India deal

A) Indian Union and its territory B) Citizenship
C) Fundamental Duties D) Union Executive
 
Answer & Explanation Answer: B) Citizenship

Explanation:
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Filed Under: Indian Politics

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Q:

Where's MBR located on the disk?

Answer

 Main Boot Record is located in sector 0, track 0, head 0, cylinder 0 of the primary active partition.

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Subject: Hardware

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Q:

Circuit breaker usually operate under

A) after D. C. component has ceased B) transient state of short-circuit current
C) sub-transient state of short-circuit current D) steady state of short-circuit current
 
Answer & Explanation Answer: B) transient state of short-circuit current

Explanation:
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Filed Under: Physics
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Q:

Who amongst  the following authors was in 2007 conferred the knighthood by the British government?

A) Salman Rushdie B) V.S. Naipaul
C) Chetan Bhagat D) Khushwant Singh
 
Answer & Explanation Answer: A) Salman Rushdie

Explanation:
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Q:

Which of the following elements is a metal?

A) Se B) I
C) Zn D) S
 
Answer & Explanation Answer: C) Zn

Explanation:

In chemistry, a metal is an element that readily forms positive ions (cations) and has metallic bonds. Metals are opaque, lustrous elements that are good conductors of heat and electricity. Most metals are malleable and ductile and are, in general, denser than the other elemental substances.

 

Examples of metals are aluminium, copper, iron, tin, gold, lead, silver, titanium, uranium, and zinc.

 

Here Se - Selenium is an element but is not a metal, S - Sulphur is not a metal and I - Iodine is also not a metal.

 

Hence, Zn - Zinc is the only metal in the given options.

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Filed Under: Chemistry
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