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Q:

Which of the following is true of a scientific theory?

A) It is only accepted after the person who came up with it has died. B) It is a method or device that applies scientific knowledge for some specific purpose.
C) It generates testable hypotheses, is supported by a large body of evidence, and is broad in scope. D) It must demonstrate the effect of one variable by testing control groups and experimental groups.
 
Answer & Explanation Answer: C) It generates testable hypotheses, is supported by a large body of evidence, and is broad in scope.

Explanation:

A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world. Scientific theories are not ever proved in the sense of being proved to be 100% correct.

 

Examples of some scientific theories are ::

Evolution, gravity, atomic theory, the germ theory of disease, relativity, quantum theory, electromagnetic theory, layered Earth theory, etc...

 

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Filed Under: General Science
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

The world's highest rail bridge being constructed in the state of J & K will be on which of the following rivers ?

A) Jhelum B) Chenab
C) Indus D) Ravi
 
Answer & Explanation Answer: B) Chenab

Explanation:
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Filed Under: Indian Geography

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Q:

The substances that are composed of to or more different elements in fixed proportion by mass are called

A) mixture B) compound
C) element D) None of these
 
Answer & Explanation Answer: B) compound

Explanation:
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Filed Under: Chemistry

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Q:

What command is used to count the total number of lines, words, and characters contained in a file ?

A) wc B) count p
C) wcount D) countw
 
Answer & Explanation Answer: A) wc

Explanation:
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Filed Under: Computer
Exam Prep: AIEEE , Bank Exams , CAT
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Q:

How many Articles are there in the Indian Constitution

A) 395 B) 396
C) 398 D) 399
 
Answer & Explanation Answer: A) 395

Explanation:
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Filed Under: Indian Politics

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Q:

If a quarter kg of potato costs 60 paise, how many paise will 200 gm cost?

A) 48 paise B) 54 paise
C) 56 paise D) 72 paise
 
Answer & Explanation Answer: A) 48 paise

Explanation:

Let the required weight be x kg.

 

 

 

Less weight, Less cost (Direct Proportion)

 

 

 

 250 : 200 :: 60 : x   =>    250 x x = (200 x 60)

 

 

 

=>

 

 

 

=> x = 48.

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Filed Under: Quantitative Aptitude - Arithmetic Ability

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Q:

Which one of the following strongly threatens biodiversity?

A) Eragile ecosystems such as mangroves and wetlands B) Inaccessible habitates in the Himalayas
C) Desstruction of natural habitates and regetation and Jhum cultivation D) Creation of biosphere reserves
 
Answer & Explanation Answer: C) Desstruction of natural habitates and regetation and Jhum cultivation

Explanation:
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Filed Under: Biology

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Q:

 To remove duplicate rows from the results of an SQL SELECT statement, the ________ qualifier specified must be included.

A) ONLY B) DISTINCT
C) UNIQUE D) SINGLE
 
Answer & Explanation Answer: B) DISTINCT

Explanation:
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Filed Under: Database

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