Q:

Which one of the following is not a property of electromagnetic waves?

A) Electromagnetic waves do not show interference and diffraction.	B) Oscillating electric field and magnetic field are perpendicular to each other.
C) Electromagnetic waves are transverse waves	D) Electromagnetic waves do not require a medium to propagate.

Answer & Explanation Answer: A) Electromagnetic waves do not show interference and diffraction.

Explanation:

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Q:

To hear a distinct echo the time interval between the original sound and the reflected sound must be at least

A) 0.2 second	B) 1 second
C) 0.1 second	D) 2 seconds

Answer & Explanation Answer: C) 0.1 second

Explanation:

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Q:

What is the noise level of normal conversation?

A) About 60 dB	B) About 70 dB
C) About 80 dB	D) About 90 dB

Answer & Explanation Answer: A) About 60 dB

Explanation:

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Q:

The World Economic Outlook (WEO) is a survey conducted and published by-

A) WTO	B) World Bank
C) UNCTAD	D) New Development Bank

Answer & Explanation Answer:

Explanation:

The World Economic Outlook (WEO) is a survey conducted and published by the International Monetary Fund. It is published biannually and partly updated two times a year. It portrays the world economy in the near and medium context, with projections for up to four years into the future.

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Exam Prep: AIEEE , Bank Exams , CAT

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Q:

Who among the following is the executive head of state in India?

A) Prime Minister	B) President
C) Cabinet Secretary	D) Finance Secretary

Answer & Explanation Answer: B) President

Explanation:

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Q:

First country to make constitution is ________.

A) India	B) England
C) USA	D) Sri Lanka

Answer & Explanation Answer: C) USA

Explanation:

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Q:

Which of the following fuels causes minimum environmental pollution?

A) Diesel	B) Kerosene
C) Hydrogen	D) Coal

Answer & Explanation Answer: C) Hydrogen

Explanation:

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Q:

The large collection of stars, dust and gas held together by gravitational attraction between components is known as

A) Cluster	B) Atmosphere
C) Galaxy	D) Sun Family

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