General Knowledge Questions

Q:

How does molecular shape affect polarity?

Answer

Polarity :: 


The polarity of a molecule defines its other physical properties such as melting point, boiling point, surface tension, vapor pressure etc... Simply, polarity occurs when the electron distribution in a molecule is asymmetric. This results in a net dipole moment in the molecule. One end of the molecule is charged negative while the other gets a positive charge.


 


The polarization of a molecule greatly depends on the shape of the molecule. A diatomic molecule like HF mentioned above has no issue of shape. The net dipole moment is only due to the uneven distribution of electrons between the two atoms. However, when there are more than two atoms involved in making a bond, there are many complexities.


 


The water molecule is of bent shape. Therefore, when the two pair of electrons shared by oxygen with two hydrogen atoms is pulled towards oxygen, the net dipole moment results in the direction of the oxygen atom. There is no other force to cancel out the resultant dipole moment. Hence, the water molecule is highly polar.


 


Ammonia molecule is of a pyramid shape and the electronegative N atom pulls the electrons towards itself. The three N-H bonds are not in the same plane; hence the dipole moments created do not get canceled out. This makes ammonia a polar molecule.


 


However, the dipole moments sometimes get canceled due to the shape of the molecules, making the molecule non-polar. Carbon dioxide is such a molecule.

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

Where is the headquaters of the UN industrial Development Organization

A) Vienna.Austria B) New Delhi
C) Washington DC D) None of these
 
Answer & Explanation Answer: A) Vienna.Austria

Explanation:
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Filed Under: World Organisations

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Q:

Computers use the _ language to process data.

A) Kilobyte B) Binary
C) Representation D) Processing
 
Answer & Explanation Answer: B) Binary

Explanation:

All the data in a computer system consists of binary information. 'Binary' means there are only 2 possible values: 0 and 1.

Computer software translates the information you actually give on it such as decimal numbers, text, photos, sound, and video to the binary information.

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Filed Under: Computer
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Q:

Who has become the 1st-ever spinner to bowl the 1st over in a World Cup?

A) Moeen ALi B) Imran Tahir
C) Yuzvendra Chahal D) Rashid Khan
 
Answer & Explanation Answer: B) Imran Tahir

Explanation:

The South African leg-spinner has become the 1st-ever spinner to bowl the 1st over in a World Cup. It took place in the World Cup 2019 against England team at Oval in London where he bowled Bairstow for a DUCK.

the_1st-ever_spinner_to_bowl_the_1st_over_in_a_World_Cup1559630636.jpg image

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Filed Under: Sports
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Q:

All India Radio was founded in

A) 1935 B) 1931
C) 1930 D) 1927
 
Answer & Explanation Answer: C) 1930

Explanation:

All India Radio founded in 1930.

With over 420 radio stations in about 23 languages & 179 dialects.

AIR is one of the largest radio broadcasters in world.

It also has 99.19% population coverage & 18 FM channels.

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Filed Under: General Awareness
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Q:

What is the cause of most boating accidents?

what_is_the_cause_of_most_boating_accidents1538570800.jpg image

A) Machinery failure B) Alcohol use
C) Lack of proper look-out D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The main causes for the boat accidents are ::

1. Excessive speed

2. Machinery failure

3. Operator inexperience

4. Alcohol use

5. Operator inattention

6. Lack of proper look-out

7. Careless/reckless behavior and hull failure

8. Hazardous waters

and some more...

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Filed Under: General Awareness
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Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.


Modern civilization is completely dependent on energy, which has therefore to be abundant and also economical. About 85% of the world's energy is supplied by oil, coal and natural gas while nuclear, hydro, wind and solar power and biomass supply the rest. Coal, nuclear and hydro are used primarily to generate electricity while natural gas is widely used for heating. Biomass is used both for heating and cooking. The wind and solar power is the future's hope as they are sustainable energy sources. Oil powers almost all machines that move and that makes oil uniquely versatile. Oil powered airplanes carry 500 people across the widest oceans at nearly the speed of sound. Oil powered machines produce and transport food. Oil powered machines are ubiquitous. Clearly, we live in the age of oil but it is drawing to a close. According to data available if oil production remains constant until it's gone, there is enough to last 42 years. Oil wells will produce less as they become depleted, which will make it impossible to keep production constant. Similarly natural gas and coal will last another 61 years and 133 years respectively. Naturally, as they become scarce, they become expensive, leading to a worldwide energy crisis. If we are to survive on this planet, we have to make a transition to sustainable energy sources. The transition may be willy-nilly or planned - the choice is ours.

The dawning era of limited and expensive energy will be very difficult for everyone on earth but will be even more difficult if it is not anticipated. It is of utmost importance that the public and policymakers understand the global energy crisis and act in tandem to ensure that the species 'homo sapiens' does not become extinct.

The theme of the passage is

A) Changing Lives B) Looming Energy Crisis
C) Energy Resources D) Power in Today's world
 
Answer & Explanation Answer: B) Looming Energy Crisis

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

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Q:

Out of the four alternatives, choose the one which can be substituted for the given words/sentences and click the button corresponding to it. An exact copy

A)  Facsimile B)  Twin
C) Mirror D)  Clone
 
Answer & Explanation Answer: A)  Facsimile

Explanation:
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Filed Under: English
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