General Knowledge Questions

Q:

In electro - magnetic radiation, which of the following has greater wave - length than visible light

A) Ultra -violet rays B) Infra - red rays
C) Cosmic rays D) x-rays
 
Answer & Explanation Answer: B) Infra - red rays

Explanation:
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Filed Under: Biology

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Q:

If price of an article decreases from P1 to Rs 25, quantity demanded increases from 900 units to 1200 units. If point elasticity of demand is ­2 find P1?

A) Rs. 20 B) Rs. 30
C) Rs. 25 D) Rs. 35
 
Answer & Explanation Answer: B) Rs. 30

Explanation:
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Filed Under: Physics

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Q:

What is a product in a chemical reaction?

Answer

In chemistry, a product is a substance that is formed as the result of a chemical reaction. In a reaction, starting materials called reactants and the ending materials are called products.

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Q:

Which of the following harmone is called the emergency harmone ?

A) Insulin B) Adrenaline
C) Estrogen D) Oxytocin
 
Answer & Explanation Answer: B) Adrenaline

Explanation:
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Filed Under: Biology

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Q:

Stars are held together by

A) Gravitational forces B) Electrical forces
C) Ionic forces D) Magnetic forces
 
Answer & Explanation Answer: A) Gravitational forces

Explanation:

A star is a self luminous astronomical object and shines due to internal radiation from the enrgy sources. All stars are held together by their own gravity called Gravitational force.

Stars_are_held_together_by1560151249.jpg image

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Q:

When more than 20% of the body weight is due to fat, the person is suffering from

A) Marasmus B) Kwashiorkor
C) Scurvy D) Obesity
 
Answer & Explanation Answer: D) Obesity

Explanation:
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Filed Under: Biology

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Q:

The Black Box is a device used in an aircraft to

A) control the speed B) detect any flaw in the engines
C) Record the flight data D) maintain contact with the ground
 
Answer & Explanation Answer: C) Record the flight data

Explanation:
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Filed Under: General Awareness

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Q:

Which of the following equations represents Photosynthesis?

A) 6CO2 + 6H2O -----> C6H12O6 + 6O2 B) C6H12O6 + 6O2 -----> CO2 + 6H2O
C) CO2 + H2O -----> C6H12O6 + 6O2 D) 6O2 + 6H2O -----> C6H12O6 + 6CO2
 
Answer & Explanation Answer: A) 6CO2 + 6H2O -----> C6H12O6 + 6O2

Explanation:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms activities.

 

Photosynthesis can be represented using a chemical equation.

 

The overall balanced equation is

 

              6CO2 +  6H2O   Sunlight    C6H12O6   +   6O2Source of Carbon & Oxygen  + Source of Electrons & Hydrogen + Energy that drives Photosynthesis             ----> Sugar + Gas produced by splitting water.

 

Where 

CO2 = carbon dioxide 

H2O = water

C6H12O6 = glucose 

O2 = oxygen.

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Filed Under: Chemistry
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