Q:

'Start' menu in a standard personal computer is

A) Part of the hardware	B) A set of options and commands
C) Nothing but the status bar	D) Network related

Answer & Explanation Answer: B) A set of options and commands

Explanation:

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Q:

The dolphin is

A) Fish	B) Reptile
C) Mammal	D) Turtle

Answer & Explanation Answer: C) Mammal

Explanation:

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Q:

Water has maximum density at............

A) 0 C	B) -15 C
C) 4 C	D) 15 C

Answer & Explanation Answer: C) 4 C

Explanation:

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Q:

Select the synonym of

proscriptive

A) squalid	B) exiguous
C) excessive	D) thrifty

Answer & Explanation Answer: C) excessive

Explanation:

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Q:

When combining with nonmetallic atoms, metallic atoms generally will

A) Lose electrons and forms cations	B) Gain electrons and forms anions
C) Lose electrons and forms anions	D) Gain electrons and forms cations

Answer & Explanation Answer: A) Lose electrons and forms cations

Explanation:

When combining with nonmetallic atoms, metallic atoms generally will Lose electrons and forms cations.

As the ionization energy of te metals are very low, so they can easily lose electrons and form positively charged ion called cations.

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Q:

The main constituent of biogas is

A) Butane	B) Methane
C) Hydrogen Sulphide	D) Carbondioxide

Answer & Explanation Answer: B) Methane

Explanation:

The main constituent of biogas is methane (55-70%), CO2 (30-45%) and some traces of gases such as H2S and ammonia.

Biogas is produced under anaerobic conditions; the process is denominated as anaerobic digestion.

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Q:

Fish and other aquatic creatures can live inside a deep frozen pond because

A) fish are cold-blooded animals	B) ice is a bad conductor of heat
C) there will always be water just beneath the ice level	D) they can adapt themselves to live in ice

Answer & Explanation Answer: C) there will always be water just beneath the ice level

Explanation:

Water has the maximum density at $4^{o} C$ . So at this temperature, it sinks down to bottom and stays here. If it cools further, it will become less dense and move up. So while the upper layers can cool enough to form ice, the bottom layers remain as water at $4^{o} C$ .

Therefore, (C) is correct.

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Q:

Paper Currency Act was enacted by British Government of India in which year ?

A) 1870	B) 1861
C) 1858	D) 1865

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