Questions

Q:

Metals are good conductors of electricity because

A) The atoms are lightly packed B) They contain free electrons
C) They have high melting point D) All the above
 
Answer & Explanation Answer: B) They contain free electrons

Explanation:

Metal particles are held together by strong metallic bonds, which is why they have high melting and boiling points. The free electrons in metals can move through the metal, allowing metals to conduct electricity.

Because the electrons in the atom's higher energy levels can separate from the atoms easily, they can be pulled out with very little energy. Because the molecular structure of the metal is such that 'free electrons' are free to move, thus being categorized as electrically conductive.

 

For example, copper is used for electrical wiring because it is a good conductor of electricity.

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Filed Under: Physics
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Q:

The protoplasm of a child is exactly the same as that of its

A) mother B) father
C) grandfather D) identical twin
 
Answer & Explanation Answer: D) identical twin

Explanation:

Though all living organisms  are made of protoplasm each individual has a different composition however slight it be. In identical twins the same cell divides into two and each one develops into one person. So the genitic make-up and type of protoplasm are exactly the same.

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Filed Under: Biology

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Q:

The Indian rivers of the indus Basin are

A) Sutlej, Beas and Ravi B) Ganga, Beas and Sutlej
C) Betwa, Sone and Kosi D) Gomati, Kosi, Gandak
 
Answer & Explanation Answer: A) Sutlej, Beas and Ravi

Explanation:

The other tributaries of the indus are Jhelum and Chenab.

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Filed Under: Indian Geography

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Q:

Air conditioner was discovered by

A) Edison B) Wilson
C) Carrier D) Roentgen
 
Answer & Explanation Answer: C) Carrier

Explanation:
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Filed Under: Inventions

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Q:

The payback period can become an important issue when a large scope project is developed over several years. Maureen has been assigned the responsibility of calculating the payback period for her project that is to be completede in 3 years. The internal rate of return(IRR) is 7% and the annual savings will be $800,000 per year. The total cost is $4,000,000 and the rate of return during this time period is 3%. What is the payback period of Maureen's project?

A) 3 years B) 4 years
C) 5 years D) 13.3 years
 
Answer & Explanation Answer: C) 5 years

Explanation:

The payback period is how long it takes to recoup your investment. In this example, the cost was $4,000,000 and the savings was $800,000 per year. $4,000,000/$800,000 = 5. Therefore, Answer A, B and D are incorrect.

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Filed Under: PMP Certification

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Q:

The Simple interest accrued on an amount of Rs. 2,500 at the end of six years is Rs.1875. What would be the simple interest accrued on an amount of Rs. 6875 at the same rate and Same period? 

A) Rs. 4,556.5 B) Rs. 5,025.25
C) Rs.5,245.5 D) None of these
 
Answer & Explanation Answer: D) None of these

Explanation:
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Q:

Highest Jute producing state in India?

A) Gujarat B) West Bengal
C) Uttar Pradesh D) Bihar
 
Answer & Explanation Answer: B) West Bengal

Explanation:

West Bengal is the highest Jute producing state in India followed by Bihar and Assam in second and third place.

Gujarat is the largest Cotton producing state in India.

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Filed Under: Indian Geography
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Q:

Extensive planting of trees to increase forest cover is called

Extensive_planting_of_trees_to_increase_forest_cover_is_called1552993768.jpg image

A) Agroforestry B) Social forestry
C) Afforestation D) Deforestation
 
Answer & Explanation Answer: C) Afforestation

Explanation:

The process of extensive planting of trees or seeds in barren lands to increase forest cover is called as Afforestation.

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Filed Under: General Science
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