Questions

Q:

Number of moles of CO2 present in 24 grams of carbon is

A) 0.5 B) 1
C) 2 D) 0.25
 
Answer & Explanation Answer: C) 2

Explanation:

1 mole of CO2 contain 12gms of carbon and 44 gms of CO2

therefore  24 gms of carbon is present in 88 gms of CO2 or 2 moles of CO2

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7 4201
Q:

Which half reaction correctly represents reduction?

A) Fe2+ + e- ---> Fe3+ B) Au3+ + 3e– ---> Au
C) Ag ---> Ag+ + e- D) All of the above
 
Answer & Explanation Answer: B) Au3+ + 3e– ---> Au

Explanation:

A half reaction is either the oxidation or reduction reaction component of a redox reaction. A half reaction is obtained by considering the change in oxidation states of individual substances involved in the redox reaction.

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Q:

Which country has been unanimously elected as the President of the UN-Habitat  ?

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

Explanation:

India has been unanimously elected as the President of the UN-Habitat. UN-Habitat, an organ of the United Nations’ Organisation (UNO) reports to the United Nations General Assembly. UN-Habitat  promotes socially and environmentally sustainable human settlements across the world. India has been elected as the President of UN-Habitat after a gap of 10 years. This is only the third time that India has been elected as the President of UN-Habitat after 2007 and 1988. The UN-Habitat was established in 1978.

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Q:

Where is the eastern Naval Command Headquarters ?

A) Kolkata B) Kakinada
C) Visakahapatnam D) Machilipatnam
 
Answer & Explanation Answer: C) Visakahapatnam

Explanation:
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Filed Under: General Awareness

9 4199
Q:

The study of the weather is known as

A) Weatherology B) Siesmology
C) Meteorology D) Pulmology
 
Answer & Explanation Answer: C) Meteorology

Explanation:

Meteorology is the study of weather and Earth's atmosphere. Climatology is another term used to describe the study of weather.

 

Studying the weather is not only useful for determining if you'll need an umbrella for the day. While forecasting is an important aspect of studying weather, understanding weather patterns provides valuable information about the status of the planet.

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1 4199
Q:

What has a mouth but never smiles?

Answer

A bottle has a mouth from which we used to drink water or any juice. But it cannot smile.

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13 4198
Q:

"World Television Day" is observed every year on ___.

A) Nov 21 B) Oct 22
C) Sep 23 D) Aug 24
 
Answer & Explanation Answer: A) Nov 21

Explanation:
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Q:

What does the Aufbau Principle state

A) Electrons will be added to an atom starting from the lowest possible level or sublevel. B) Electrons will be added to an atom only if the orbitals are different colors.
C) Electrons will be added to an atom in a random order. D) Electrons will be added to an atom in a symmetrical manner.
 
Answer & Explanation Answer: A) Electrons will be added to an atom starting from the lowest possible level or sublevel.

Explanation:

The Aufbau Principle states that in the ground state of an atom, an electron enters the orbital with lowest energy first and subsequent electrons are fed in the order of increasing energies.

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