Questions

Q:

A tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an initial speed of 110 feet per second. After how many seconds does the ball attain its maximum height?

A) 2.87 sec B) 3.44 sec
C) 4.65 sec D) 5.41 sec
 
Answer & Explanation Answer: B) 3.44 sec

Explanation:

It is launched vertically with an initial speed of 110 ft/sec.

It will reach maximum height when the speed drops to 0.

Vo=110 feet per second 

ho=2 feet 

So, h(t) = -16t^2 +110t +2 

Take the derivative: h'(t) = 110 -32t 

The maximum height will be at the inflection when the derivative crosses the x-axis, then h'(t)=0. 

So, set h'(t)=0 and solve for t: 

0 = 110 -32t 

-110 = -32t 

t=3.4375 

t=3.44 seconds.

 

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Q:

The one most important feature of the Mauryan Administration was 

A) wide powers enjoyed by the provicial governors B) the presence of a ' council of ministers '
C) the presence of vast, numerous powers of the bureaucracy D) an extensive network of spy-system
 
Answer & Explanation Answer: C) the presence of vast, numerous powers of the bureaucracy

Explanation:
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Filed Under: Indian History

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Q:

When you travel in certain parts of India, you will  notice red soil. What is the main reason for this colour?

A) Abundance of magnesium B) Accumulated humus
C) Presence of ferric oxides D) Abundance of Phosphates
 
Answer & Explanation Answer: C) Presence of ferric oxides

Explanation:
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Filed Under: Indian Geography

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Q:

Clove the commonly used spice is obtained from the

A) stem B) root
C) flower bud D) fruit
 
Answer & Explanation Answer: C) flower bud

Explanation:

Clove the commonly used spice which is obtained from the flower buds of a tree in the family Myrtaceae, Syzygium aromaticum.

clove_the_commonly_used_spice_is_obtained_from_the1536734920.jpg image

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Filed Under: General Science
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Q:

What is Treasury Bills?

Answer

A Treasury Bill (known as T-Bill) is an instrument of money market, used to finance short term requirements of Government of a country. A T-Bill is issued at a rate lower than the Face value, and redeemed at Face value on maturity, this difference is the rate of interest on T-Bill. This rate of interest is called Risk free Rate of the country.


 

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Subject: Finance

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Q:

The dolphin is 

A) Fish B) Reptile
C) Mammal D) Turtle
 
Answer & Explanation Answer: C) Mammal

Explanation:
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Filed Under: Animals and Birds

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Q:

Net National product of a country is

A) GDP minus depreciation allowances B) GDP plus net income from abroad
C) GNP minus net income from abroad D) GNP minus depreciation allowances
 
Answer & Explanation Answer: D) GNP minus depreciation allowances

Explanation:
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Filed Under: Indian Economy

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Q:

Which of the following is not a Jovian planet?

A) Jupiter B) Earth
C) Saturn D) Neptune
 
Answer & Explanation Answer: B) Earth

Explanation:

Earth is not a Jovian Planet as it is a Terrestrial planet.

A planet designated as Jovian is hence a gas giant, composed primarily of hydrogen and helium gas with varying degrees of heavier elements.

 

Within the Solar System, four Jovian planets exist – Jupiter, Saturn, Uranus, and Neptune. Though these planets vary in terms of size, mass, and composition, they all share certain characteristics that cause them to differ greatly from the terrestrial planets located in the inner Solar System.

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