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Q:

What causes the mottling of the dental enamel ?

A) High levels of chlorine in water B) High levels of nitrate in the water
C) High levels of fluorides in the water D) High levels of calcium in the water
 
Answer & Explanation Answer: C) High levels of fluorides in the water

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Filed Under: General Science

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Q:

The Comptroller and Auditor General is closely connected with which of the following Committees of Parliament?

A) The Estimates Committee B) The Committee on Public Undertakings
C) The Public Accounts Committee D) All of these
 
Answer & Explanation Answer: C) The Public Accounts Committee

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Filed Under: Indian Politics
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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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Filed Under: Physics
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Q:

As of February 2018, who is the Indian-born CEO of the Nokia company?

A) Sundar Pichai B) Ajaypal Singh Banga
C) Rajeev Suri D) Satya Nadella
 
Answer & Explanation Answer: C) Rajeev Suri

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Filed Under: General Awareness
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Q:

Android is a mobile operating system designed primarilyfor touch screen mobile devices such as smartphones andtablets. Which among the following was the first Android Operating System?

A) Cupcake B) Alpha
C) Gingerbread D) Doughnut
 
Answer & Explanation Answer: B) Alpha

Explanation:

Alpha was android version 1.0 released on 23rdSeptember 2008. Android is continually developed byGoogle and the Open Handset Alliance (OHA), andhas seen a number of updates to its base operatingsystem since the initial release

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Filed Under: Computer
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Q:

In the following question, four words are given out of which one word is incorrectly spelt. Select the incorrectly spelt word.

A) Autumn B) Desperate
C) Reciept D) Traffic
 
Answer & Explanation Answer: C) Reciept

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Filed Under: English
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Q:

Which of the following is not a plant hormone?

A) Gibberellic B) Auxins
C) Cytokinins D) Thyroxin
 
Answer & Explanation Answer: D) Thyroxin

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Filed Under: Biology
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Q:

Propyne and propene can be distinguished by

A) AgNO₃ in ammonia B) conc. H₂SO₄
C) dil. KMnO₄ D) Br₂ in CCl₄
 
Answer & Explanation Answer: A) AgNO₃ in ammonia

Explanation:

Propene, being an alkene, and propyne, being a alkyne, are distinguished using the common chemical tests namely ammoniacal silver nitrate or ammoniacal cuprous chloride. Ammoniacal silver nitrate is also called as Tollen's reagent.

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Filed Under: Chemistry
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