Questions

Q:

Dry ice is an example of which process

A) Condensation B) Evaporation
C) Sublimation D) Freezing
 
Answer & Explanation Answer: C) Sublimation

Explanation:

Sublimation is a process when a solid changes directly into gas instead changing into liquid first. Dry ice is an example of Sublimation process because it doesn't change into liquid CO2 and directly change into gaseous CO2 when heated.

 

Hence, Dry ice is an example of Sublimation process. 

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Q:

Water is an excellent solvent because

Answer

Water is capable of dissolving a variety of different substances, which is why it is such a good solvent.

And, water is called the "universal solvent" because it dissolves more substances than any other liquid

It means that wherever water goes, either through the ground or through our bodies, it takes along valuable chemicals, minerals, and nutrients

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Q:

When a piece of pure silicon is doped with aluminium, then

A) the conductivity of the doped silicon piece will remain the same B) the doped silicon piece will become n-type
C) the doped silicon piece will become p-type D) the resistivity of the doped silicon piece will increase
 
Answer & Explanation Answer: C) the doped silicon piece will become p-type

Explanation:

p type of semiconductor is obtained when Silicon is doped with a trivalent impurity like Aluminium. Aluminium is a p-type dopant, which means that when a semiconductor i.e. silicon is doped with aluminium, it creates a hole (positively charged carrier) by accepting an electron from the silicon atom. Electrical conductivity of semiconductors increasesand resistivity remains the same

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Q:

Which of the following events of World History marked the beginning of the Second World War?

A) Invasion of Poland by German armies B) Occupation of Latvia , Estonia and Lithuania by the soviet Union
C) War against Finland declared by the USSR D) The period of 'Phoney war"
 
Answer & Explanation Answer: A) Invasion of Poland by German armies

Explanation:

On 1 september 1939 German armies marched into poland. On 3 September Britain and France declared war on Germany.Thus the invasion of poland marked the beginning of the Second World War. The German armies completed the conquest of poland in less than three weeks as no aid reached poland. In spite of the declaration of war, however, there was little actual fighting for many months. Therefore, the war during the period from  september 1939 to April 1940 when germany invaded Narway and Denmark is known as the "Phoney War"

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Q:

Which among the following migratory bird species migrates from Arctic to Antarctica every year, making it longest migratory route on nearth?

A) Arctic Tern B) Black necked swan
C) Bobolink D) American Robin
 
Answer & Explanation Answer: A) Arctic Tern

Explanation:
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Q:

Latitude of place is indicative of its

A) Temperature B) Altitude
C) Time D) Rainfall
 
Answer & Explanation Answer: A) Temperature

Explanation:

Latitude of place is indicative of its temperature. In geography, latitude is a geographic coordinate that specifies the north–south position of a point on the Earth's surface. Latitude is an angle which ranges from 0° at the Equator to 90° at the poles.

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Q:

Which is India's Largest BPO (Business Process Outsourcing) Company?

A) Piogeon B) Spectramind
C) Technovate D) None of these
 
Answer & Explanation Answer: B) Spectramind

Explanation:
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Q:

Which of the following is not an aerobic outdoor sport?

A) Hiking B) Swimming
C) Skydiving D) Cycling
 
Answer & Explanation Answer: C) Skydiving

Explanation:

Except skydiving all other given options swimming, hiking and cycling are aerobic outdoor sports.

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