Questions

Q:

For accurate scientific work, temperatures are often measured by

A) mercury thermometers B) alcohol thermometers
C) platinum resistance thermometers D) thermoelectric thermometers
 
Answer & Explanation Answer: C) platinum resistance thermometers

Explanation:

The resistance of metallic conductors e.g, platinum, increases with rise of  temperature . The increase in temperature results in a decrease of current which can be recorded in a galvanometer if the conductor is included in an electrical circuit. Thus the temperature can be known; platinum resistance thermometer is used generally for accurate scientific work. When two dissimilar metals are joined at the ends, and these ends are subjected to a difference of temperature, a current flows through the metals. Greater the difference of temperature , greater the current. So the curent strength can form the basis for measuring the difference in temperature. And when one of these temperatures is known, we can calculate the other.

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Filed Under: Physics

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Q:

Heat energy of an object is

A) the average energy of the molecules of the object B) the total energy of the molecules of the object
C) the average velocity of the molecules of the object D) the average potential energy of the molecules of the object
 
Answer & Explanation Answer: B) the total energy of the molecules of the object

Explanation:
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Filed Under: Physics

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Q:

Which statement describes the term salary?

A) Salary refers to the fixed amount paid on a daily basis. B) Salary refers to the varying amount paid on a daily basis.
C) Salary refers to the fixed amount paid on a weekly, bi-weekly, or monthly basis. D) None of the above
 
Answer & Explanation Answer: C) Salary refers to the fixed amount paid on a weekly, bi-weekly, or monthly basis.

Explanation:

A salary is best described as a fixed amount of income that is paid to an individual on a weekly, bi-weekly or monthly basis.

 

A salary can also be described as the annual earnings paid out over a year.

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Filed Under: Indian Economy
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Q:

What organelle allows some protists to detect light?

Answer

An organelle called Eyespot allows some protists to detect light. It allows the cells to sense light direction and intensity and respond to it by swimming either towards the light (positive phototaxis) or away from the light (negative phototaxis).


 


Eyespot is a photoreceptive organelle found in the flagellate or (motile) cells of green algae and other unicellular photosynthetic organisms such as euglenids.


 


Eyespot-mediated light perception helps the cells in finding an environment with optimal light conditions for photosynthesis. Eyespots are the simplest and most common "eyes" found in nature, composed of photoreceptors and areas of bright orange-red pigment granules.

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Subject: Biology Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

Which of the following is NOT true about energy balance? 

A) Inactive people use more energy so they should consume fewer calories. B) Energy balance is the balance between the amount of calories consumed and the amount used for energy.
C) Energy balance is influenced by the amount of exercise one gets and their dietary habits. D) Stored body fat will increase if calorie intake is greater than energy used.
 
Answer & Explanation Answer: A) Inactive people use more energy so they should consume fewer calories.

Explanation:

The given statement option A) is False regarding energy balance.
It should be "Inactive people use less energy so they should consume fewer calories."

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Filed Under: General Science
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Q:

The 1911 Chinese revolution ended the rule of the

A) Ming dynasty B) Mongolians dynasty
C) Song dynasty D) Manchus dynasty
 
Answer & Explanation Answer: D) Manchus dynasty

Explanation:

It was the Qing Dynasty, who was a Manchu Dynasty whose rule ended in 1911 Chinese revolution.

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Filed Under: World History
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Q:

Data flow analysis studies

A) The use of data on paths through the code B) Possible communications bottlenecks in a program
C) The intrinsic complexity of the code D) The rate of change of data values as a program executes
 
Answer & Explanation Answer: A) The use of data on paths through the code

Explanation:

Data flow analysis studies the use of data on paths through the code.

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Q:

The playground of baseball is known as

A) Diamond B) Court
C) Ring D) Pitch
 
Answer & Explanation Answer: A) Diamond

Explanation:

The playground of baseball is known as Baseball Diamond or the ball field.

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Filed Under: Sports
Exam Prep: CAT , Bank Exams , AIEEE
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