Questions

Q:

During the motion of a projectile fired from the earth surface, _______

A) its kinetic energy remains constant B) its momentum remains constant
C) vertical component of its velocity remains constant D) horizontal component of its velocity remains constant
 
Answer & Explanation Answer: D) horizontal component of its velocity remains constant

Explanation:
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Q:

Why does a lower Cost Per Acquisition (CPA) not indicate a higher profit?

Answer

A lower CPA may be accompanied by lower sales volume, reducing overall profit.

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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 first full­scale, working steam ­powered tricycle was built by:

A) Verbiest B) Cugnot
C) Trevithick D) Niepce
 
Answer & Explanation Answer: B) Cugnot

Explanation:
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Q:

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.

Extremely happy, peaceful, or picturesque

A) Idyllic B) Abominable
C) Iota D) Amiss
 
Answer & Explanation Answer: A) Idyllic

Explanation:
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Q:

Innate immune system defenses include

A) phagocytosis B) B cells
C) plasma cells D) T cells
 
Answer & Explanation Answer: A) phagocytosis

Explanation:
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Q:

In the following question, a sentence is given with some bold words which may contain errors. Below the sentence, a table is given with two columns in which column 'A' contains the list of bold words, and in column 'B' the suggested corrections are listed. You have to choose the best alternative among the four given options. If no correction is required against the given bold words, mark (E), i.e., "None of the above" as your answer. 

After learning that Ranjhi Rajak, a pilgrim from Madhya Pradesh had collapsed near Bhairo temple and needed immediate medical attention, SI Bahuguna carried Rajak on his back and walked uphill for over 2 kms till they reached the nearby hospital.

 

A) Both (1)-(5) and (4)-(8) B) (2)-(6)
C) (1)-(5) D) (3)-(7)
 
Answer & Explanation Answer:

Explanation:

All the words in the sentence are correct and require no changes. Hence, the correct answer is option 5.

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Q:

Which of the following is the leading producer of soybean in India?

A) Uttar Pradesh B) Chhattisgarh
C) Maharashtra D) Madhya Pradesh
 
Answer & Explanation Answer: D) Madhya Pradesh

Explanation:

Madhya Pradesh is the leading producer of soybean in India.

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Q:

The  optical  phenomenon  that  is  primarily responsible  for  the  observation  of  rainbow on a rainy day is 

A) diffraction B) interference
C) dispersion D) reflection
 
Answer & Explanation Answer: C) dispersion

Explanation:

A rainbow is a natural spectrum appearing in the sky after a rain shower. It is caused by dispersion of sunlight by tiny water droplets, present in the atmosphere. A rainbow is always formed in a direction opposite to that of the Sun. The water droplets act like small prisms. They refract and disperse the incident sunlight, then reflect it internally, and finally refract it again when it comes out of the raindrops.

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