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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Q:

Insulators have resistivity of the order of

A) 106 Ω m to 108 Ω m	B) 10-12 Ω m to 10-17 Ω m
C) 10-8 Ω m to 10-6 Ω m	D) 1012 Ω m to 1017 Ω m

Answer & Explanation Answer: D) 1012 Ω m to 1017 Ω m

Explanation:

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Q:

The number of parliamentary seats (Lok Sabha) of Goa is _________.

A) 2	B) 13
C) 20	D) 25

Answer & Explanation Answer: A) 2

Explanation:

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Filed Under: Indian Politics
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Q:

Marble comes under which category of rocks?

A) Sedimentary	B) Igneous
C) Metamorphic	D) None of these

Answer & Explanation Answer: C) Metamorphic

Explanation:

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Q:

Which state does not share its border with Jharkhand?

A) Madhya Pradesh	B) Chhattisgarh
C) Orissa	D) West Bengal

Answer & Explanation Answer: A) Madhya Pradesh

Explanation:

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Filed Under: Indian Geography
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Q:

Acetic Acid is another name for which of the following?

A) Vinegar	B) Baking Soda
C) Copper Sulphate	D) Magnesium Oxide

Answer & Explanation Answer: A) Vinegar

Explanation:

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Filed Under: Chemistry
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Q:

Nitrogen fixation is a process of

A) Assimilation of nitrate	B) Utilisation of nitrogen gas
C) Conversion of organic nitrogen to proteins	D) Conversion of molecular nitrogen to ammonia

Answer & Explanation Answer: C) Conversion of organic nitrogen to proteins

Explanation:

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Filed Under: Chemistry
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Q:

___________ being a higher category, is the assemblage of families which exhibit a few similar characters.

A) Order	B) Species
C) Genus	D) Class

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