Questions

Q:

Centrifugal force increases with

A) Temperature B) Pressure
C) Acceleration D) Humidity
 
Answer & Explanation Answer: C) Acceleration

Explanation:

Centrifugal force is the fictitious force that pulls out from the center on the body we feel while moving in the circular path. It increases with the rate of rotation of the axis i.e, acceleration of the body.

 

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Q:

For an ideal gas, which one of the following statements does not hold true?

A) The speed of all gas molecules is same B) The kinetic energies of all gas molecules are not same
C) The potential energy of the gas molecules is zero D) There is no interactive force between the molecules.
 
Answer & Explanation Answer: A) The speed of all gas molecules is same

Explanation:

In an ideal gas, at any particular time, different particles in the gas have different speeds and hence different kinetic energies. This assumption is reasonable because as the particles collide, we expect their speed to change. Even if initial speed of all the particles was same, the molecular collisions will disrupt this uniformity.Hence statement 1 is incorrect and 2 is correct.

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Q:

Which one of the following is not a type of coal?

A) Anthracite B) Lignite
C) Peat D) Siderite
 
Answer & Explanation Answer: D) Siderite

Explanation:
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Q:

Bacteria and archaea are similar in which of the following?

A) Plasma membrane ester linkage B) Possessing prokaryotic cells
C) Peptidoglycan cell walls D) Methionine as the start signal for protein synthesis
 
Answer & Explanation Answer: B) Possessing prokaryotic cells

Explanation:

Bacteria and archaea are similar in possessing prokaryotic cells.

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Q:

At low temperature, Lead behaves as a :

A) Semi conductor B) Super conductor
C) Insulator D) Conductor
 
Answer & Explanation Answer: B) Super conductor

Explanation:
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Filed Under: Chemistry
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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.

The first working steam­ powered vehicle was designed and most likely built by Ferdinand Verbies, a Flemish member of a Jesuit mission in China around 1672. It was a 65 cm long scale­ model toy for the Chinese Emperor, that was unable to carry a driver or a passenger. It is not known if Verbiest's model was ever built. Nicolas- Joseph Cugnot is widely credited with building the first full­ scale, self ­propelled mechanical vehicle or automobile in about 1769; he also created a steam­ powered tricycle. He constructed two steam tractors for the French Army, one of which is preserved in the French National Conservatory of Arts and Crafts. His inventions were however handicapped by problems of water supply and maintaining steam pressure. In 1801, Richard Trevithick built and demonstrated his Puffing Devil road locomotive, believed by many to be the first demonstration of a steam ­powered road vehicle. It was unable to maintain sufficient steam pressure for long periods. Sentiment against steam ­powered road vehicles led to the Locomotive Acts of 1865. In 1807 Nicephore Niepce and his brother Claude probably created the world's first internal combustion engine which they called Pyreolophore.

The Pyreolophore was ?

A) A self­propelled mechanical vehicle B) A steam-­powered tricycle
C) A steam tractor D) The name of the world's first internal combustion engine
 
Answer & Explanation Answer: D) The name of the world's first internal combustion engine

Explanation:
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Q:

A passage is given with 5 questions following it. Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.


My brother, David, was always close to our grandmother. Both of them shared a love of Mother Nature and of food that they had grown themselves. Whenever his schedule permitted, he would drop in for a short visit and a cup of coffee. One day, when he found no one home, he left a chunk of dirt on her porch. This started what was later to be known as his "calling card". Grandmother would come home occasionally and instantly know that Dave had been by when she spotted the chunk of dirt on her porch.

Although Grandmother had a poor upbringing in Italy, she managed to do well in the United States. She was always healthy and independent and enjoyed a fulfilling life. Recently she had a stroke and died. Everyone was saddened by her death. David was disconsolate. His life ­long friend was now gone.

What is the opposite of the word 'disconsolate'

A) Devastated B) Hilarious
C) Exuberant D) Sombre
 
Answer & Explanation Answer: C) Exuberant

Explanation:
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Q:

Name the inventor of ATM (automated teller machine), it was opened on 27th June, 1967 by Barclays bank?

A) J Shepherd-Barron B) M D White
C) D C Wetzel D) Wilfred Barron
 
Answer & Explanation Answer: A) J Shepherd-Barron

Explanation:

John Shepherd-Barron was the inventor of ATM (automated teller machine), which was opened on 27th June, 1967 by Barclays bank.

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