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Q:

The difference between present ages of Ravali and Swarna is 9 years. After 7 years, Ravali’s age is twice of Swarna’s age. What will be Ravali’s age after 4 years?

A) 15 yrs B) 16 yrs
C) 20 yrs D) 21 yrs
 
Answer & Explanation Answer: A) 15 yrs

Explanation:

Let the present age of Ravali = x

=> Swarna's present age = x - 9

From the given data,

x + 7 = 2(x - 9 + 7)

=> x = 11 yrs

Required Ravali's age after 4 years = 11 + 4 = 15 yrs.

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Filed Under: Problems on Ages
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Q:

Glycolysis is the conversion of

A) Glucose to pyruvate B) Glucose to proteins
C) Pyruvate to glucose D) All of the above
 
Answer & Explanation Answer: A) Glucose to pyruvate

Explanation:

Glycolysis is the metabolic process of converting 1 molecule of glucose to 2 molecules of pyruvate through a series of 10 enzyme catalyzed reactions.

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Filed Under: Chemistry
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Q:

The gas usually filled in the electric bulb is

A) Hydrogen B) Oxygen
C) Nitrogen D) Carbon dioxide
 
Answer & Explanation Answer: C) Nitrogen

Explanation:

The gas usually filled in the electric bulb is Nitrogen.

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Filed Under: General Science
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Q:

Making Optimal decisions at the margin requires

Answer

Making Optimal decisions at the margin requires "Weighing the costs and benefits of a decision before deciding if it should be pursued".


 

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Q:

The ancient goal of astrology was to 

A) make a more accurate model of the universe B) predict human events
C) understand the origin of Earth D) predict the passing of the seasons
 
Answer & Explanation Answer: B) predict human events

Explanation:

The ancient goal of astrology was to predict human events.

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Filed Under: Indian History
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Q:

Force of impact is the force

A) by the objects weight B) by the speed of the object
C) when the objects meet D) None of the above
 
Answer & Explanation Answer: C) when the objects meet

Explanation:

Force of impact is the force when the objects meet. The speed of the object plays an important role in the generation of force of impact. The laws of physics determine that the force of impact increases with the square of the increase in speed.

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Filed Under: Physics
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Q:

The odometer guage indicates

A) the distance travelled by a vehicle B) the depth of the ocean
C) pitch length D) frequency of the wave
 
Answer & Explanation Answer: A) the distance travelled by a vehicle

Explanation:

The odometer or the odograph is an instrument used to indicate the distance travelled by the vehicle.

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Filed Under: Physics
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Q:

Which poet first popularized the sonnet form?

A) Edmund Spencer B) Francesco Petrarch
C) Shakespeare D) None of the above
 
Answer & Explanation Answer: B) Francesco Petrarch

Explanation:

The sonnet is a fourteen-line poem written in iambic pentameter, which employ one of several rhyme schemes and adhere to a tightly structured thematic organization. Francesco Petrarch first popularized the sonnet form and after that many others like Shakespeare, Edmund Spencer and many other started that.

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Filed Under: Indian History
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