General Knowledge Questions

Q:

If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths?

A) lUV < lIR < lVIS B) lUV > lVIS > lIR
C) lUV > lIR > lVIS D) lUV < lVIS < lIR
 
Answer & Explanation Answer: D) lUV < lVIS < lIR

Explanation:

Infrared radiation, what we experience as heat when we hold our hand near a warm object, is somewhat longer wavelengths than visible light. Visible light is simply electromagnetic radiation in a range of wavelengths that our eyes are sensitive to. Visible wavelengths range from 0.0007 milimeters for red light, through orange, yellow, green, and blue, to 0.0004 milimeters for violet light. Ultraviolet is shorter wavelengths than violet.

Longer the wavelength,lower the energy

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Filed Under: Physics
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Q:

Which country has replaced Japan as world’s 2nd largest steel producing country?

A) India B) China
C) Russia D) Iran
 
Answer & Explanation Answer: A) India

Explanation:

India replaced Japan as world’s 2nd largest steel producing country.

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Q:

The chemical makeup of a rock is

A) Nutrients B) Minerals
C) Metals D) Water
 
Answer & Explanation Answer: B) Minerals

Explanation:

The chemical composition of a rock is mainly minerals.

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Q:

What two countries have nearly 50% of global coal reserves?

A) Iran & USA B) USA & China
C) Russia & USA D) Brazil & Russia
 
Answer & Explanation Answer: C) Russia & USA

Explanation:

United States and Russia have together almost 400 billion tones. Which represents nearly 50% of world's reserves of coal.

 

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Filed Under: World Geography
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Q:

Who selects the Social Audit Committee under MGNREGA scheme?

A) Chief Minister B) Gram Sabha
C) Mayor D) B.D.O.
 
Answer & Explanation Answer: B) Gram Sabha

Explanation:
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Filed Under: Indian Politics
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Q:

Laterite soils contain high amounts of

A) Calcium carbonate B) Silicates
C) Calcites D) Iron oxide
 
Answer & Explanation Answer: D) Iron oxide

Explanation:

Laterite soils are a tropical soil and possess a great amount of iron and aluminum. Due to its high iron oxide content they look like rusty-red coloration.

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Q:

What is the general formula for a straight-chain alkane?

A) C2nH2n+3. B) CnH2n+2
C) CnH2n D) CnH3n+2.
 
Answer & Explanation Answer: B) CnH2n+2

Explanation:
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Filed Under: Chemistry
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Q:

The fluid mosaic model describes the structure of

A) cell B) plasma membrane
C) nucleus D) All of the above
 
Answer & Explanation Answer: B) plasma membrane

Explanation:
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Filed Under: Biology
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