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

0 4716

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
Job Role: Bank Clerk , Bank PO

15 4716

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:

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

1 4714

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:

Which state of India has the largest number of cotton mills?

A) Karnataka	B) Uttar Pradesh
C) Maharashtra	D) Gujarat

Answer & Explanation Answer: C) Maharashtra

Explanation:

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Filed Under: Indian Geography
Exam Prep: Bank Exams

1 4707

Q:

Architectural developments in india manifested themselves in their full glory during the period of

A) Guptas	B) Nandas
C) Mauryas	D) Cholas

Answer & Explanation Answer: A) Guptas

Explanation:

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Filed Under: Indian History

4 4707

Q:

Washing soda is used ______.

I. for removing permanent hardness of water

II. for disinfecting drinking water

III. as a cleaning agent for domestic purpose

A) Only I and II	B) Only I and III
C) Only II and III	D) All I, II and III

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