Q:

Who is known as inventor of World Wide Standard Time ?

A) Sandford Fleming	B) Fredrich
C) Williamson	D) James Broot

Answer & Explanation Answer: A) Sandford Fleming

Explanation:

Sir Sandford Fleming, (January 7, 1827 – July 22, 1915) was a Scottish Canadian engineer and inventor. Born and raised in Scotland, he emigrated to colonial Canada at the age of 18. He proposed worldwide standard time zones, designed Canada's first postage stamp.

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Filed Under: Inventions
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11 5217

Q:

Which one of the following is present in the largest amount in terms of percent by mass in the earth's crust

A) Silicon	B) Oxygen
C) Carbon	D) Calcium

Answer & Explanation Answer: B) Oxygen

Explanation:

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1 5210

Q:

Which of the following novels was translated in to telugu as Pausanedi written by Paulo coelho ?

A) Brida	B) Thevalkyrie
C) The Daniel and Miss prym	D) The Alchemist

Answer & Explanation Answer: D) The Alchemist

Explanation:

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5 5210

Q:

A fixture is defined as a device which

A) is used to check the accuracy of workpiece	B) holds and locates a workpiece and guides and controls one or more cutting tools
C) holds and locates a workpiece during an inspection or for a manufacturing operation	D) All of the above

Answer & Explanation Answer: B) holds and locates a workpiece and guides and controls one or more cutting tools

Explanation:

A_fixture_is_defined_as_a_device_which1551357222.jpg image

A fixture is defined as a device which holds and locates a workpiece and guides and controls one or more cutting tools.

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1 5210

Q:

The first thermionic valve was invented by

A) Thomas Edison	B) Richardson
C) J.A. Fleming	D) Lee De Forest

Answer & Explanation Answer: C) J.A. Fleming

Explanation:

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1 5209

Q:

Which reaction occurs spontaneously?

A) Cl2(g) + 2NaF(aq)--> F2(g) + 2NaCl(aq)	B) I2(s) + 2NaF(aq)--> F2(g) + 2NaI(aq)
C) Cl2(g) + 2NaBr(aq)-->Br2(l) + 2NaCl(aq)	D) I2(s) + 2NaBr(aq)--> Br2(l) + 2NaI(aq)

Answer & Explanation Answer: C) Cl2(g) + 2NaBr(aq)-->Br2(l) + 2NaCl(aq)

Explanation:

In this chemical reaction chlorine change oxidation number from 0 to -1 (reduction) and bromine change oxidation number from -1 to 0 (oxidation).

Chlorine is stronger oxidation reagent than bromine.

In VIIA or group 17 (halogen elements) there are six elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At) and tennessin(Ts).

They have high electronegativity because they have seven valence electrons in their outermost energy level, so they can gain an electron to have the octet rule.

Going down in the group, element are weaker oxidazing reagent and less reactive.

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2 5207

Q:

A proxy server is used for which of the following?

A) To provide security against unauthorized users	B) To process client requests for Web pages
C) To process client requests for database access	D) To provide TCP/IP

Answer & Explanation Answer: A) To provide security against unauthorized users

Explanation:

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5 5206

Q:

The schools which taught primary education to Muslims during the period of sultanate

A) Mukhaddams	B) Makthabs
C) Kohies	D) None

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