Free Practice Questions for Competitive Exams, Interviews, Certifications

Q:

Which one of the following statements is not correct?

A) The response of the ear to sound of increasing intensity is approximately logarithmic.	B) The sensitivity of the human ear does not vary with the frequency of the sound.
C) When two or more waves traverse the same medium, the displacement of any element of the medium is the algebraic sum of the displacements due to each wave.	D) Longitudinal waves can travel in all media-solids, liquids and gases.

Answer & Explanation Answer: B) The sensitivity of the human ear does not vary with the frequency of the sound.

Explanation:

The human ear can respond to minute pressure variations inthe air if they are in the audible frequency range, roughly 20 Hz -20 kHz. In fact, tests conducted show an increased sensitivity in the 3000 Hz range which is the optimal amplification frequency in the human ear. So, the sensitivity of the human ear varies with the frequency of the sound.

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Filed Under: Physics
Exam Prep: Bank Exams

0 916

Q:

The difference between the selling prices of an article sold at 4% and 3% profits is Rs.3 The cost price of the article is :

A) Rs. 400	B) Rs. 350
C) Rs. 300	D) Rs. 100

Answer & Explanation Answer: C) Rs. 300

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

3 1409

Q:

Which one of the following physical quantities has the same dimensions as that of Planck’s constant h?

A) Linear momentum	B) Angular momentum
C) Force	D) Potential energy

Answer & Explanation Answer: B) Angular momentum

Explanation:

In S.I. System unit of angular momentum is "joule.Second".

SI unit of Planck's constant is joule-seconds(j-s).

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Filed Under: Physics
Exam Prep: Bank Exams

1 1325

Q:

The sum of two positive integers is 80 & difference between them is 20. Then what is difference of squares of those numbers ?

A) 1400	B) 1600
C) 1800	D) 2000

Answer & Explanation Answer: B) 1600

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 999

Q:

'Agronomy' is the practice of raising ______________

A) Plants and Animals	B) Crop plants
C) Agriculture	D) Fruit plants only

Answer & Explanation Answer: A) Plants and Animals

Explanation:

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Filed Under: General Awareness
Exam Prep: Bank Exams

1 1770

Q:

The pressure exerted by a 760 mm column of mercury at $0^{°}$ C is known as

A) 1 pascal	B) 1 atmosphere
C) 1 bar	D) 1 poise

Answer & Explanation Answer: B) 1 atmosphere

Explanation:

1 atm: It was originally defined as the pressure exerted by 760 mm of mercury at 0 °C and standard gravity (g = 9.80665 m/s2).

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Filed Under: Physics
Exam Prep: Bank Exams

0 2632

Q:

Prime Minister's 'Ujjwala Yojana' is related to __________________

A) Free distribution of LPG connections to socially backward classes.	B) Free electric connections to members of Scheduled Castes and Scheduled Tribes.
C) Mass immunisation campaign for children.	D) None of the these.

Answer & Explanation Answer: A) Free distribution of LPG connections to socially backward classes.

Explanation:

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Filed Under: Indian Politics
Exam Prep: Bank Exams

0 685

Q:

The veda which deals with the rituals is known as_____________

A) Rigveda	B) Yajurveda
C) Samaveda	D) Atharvaveda

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