Q:

Houses of Indian Parliament are prorogued by whom?

A) Speaker of Lok Sabha	B) Chairman of Rajya Sabha
C) Prime Minister of India	D) President of India

Answer & Explanation Answer: D) President of India

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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.

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Q:

A sound wave has a frequency of 4 kHz and a wavelength of 40 cm. The time taken by the sound wave to travel a distance of 3.2 km is

A) 0.5 s	B) 2.0 s
C) 4.0 s	D) 1.0 s

Answer & Explanation Answer: B) 2.0 s

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Q:

Friction is caused by the ______________ on the two surfaces in contact.

A) irregularities	B) smoothness
C) densities	D) gaps

Answer & Explanation Answer: A) irregularities

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Q:

Which of the following is false with reference to a photo-voltaic cell?

A) It is another name as solar cell	B) It can be used as infra-red detectors
C) It can store light energy in the form of electrical energy	D) It converts electric energy into light energy

Answer & Explanation Answer: D) It converts electric energy into light energy

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Q:

The boundary between Earth's crust and mantle is _____.

A) Moho discontinuity	B) Lehman discontinuity
C) Conrad discontinuity	D) Gutenberg discontinuity

Answer & Explanation Answer: A) Moho discontinuity

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Q:

Minamata disease is a nervous disorder caused by eating fish, polluted with _____

A) Iron	B) Mercury
C) Lead	D) Nickel

Answer & Explanation Answer: B) Mercury

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Q:

Mangifera indica is the scientific name of

A) Guava	B) Mango
C) Amla	D) Jack fruit

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