Q:

What is the heat generated (in J) in a heating element of resistance 900 $Ω$ when a current of 0.3 A passes through it for 10 seconds?

A) 2700	B) 810
C) 405	D) 1350

Answer & Explanation Answer: B) 810

Explanation:

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Q:

Which statement best describes the electronegativity of an element?

A) Electronegativity of an atom is it's ability to produce energy while losing an electron.	B) Electronegativity of an atom is it's ability to attract electrons during bond formation.
C) Electronegativity of an atom is it's ability to lose electrons during cation formation.	D) Electronegativity of an atom is it's ability to share electrons during a covalent bond formation.

Answer & Explanation Answer: B) Electronegativity of an atom is it's ability to attract electrons during bond formation.

Explanation:

Electronegativity, is a chemical property that describes the tendency of an atom to attract a shared pair of electrons (or electron density) towards itself.

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Q:

Teens who drink are at risk of

A) HIV and other STDs	B) becoming an alcoholic
C) date rape	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

teens_drinking_are_at_risk_of1539257520.jpg image

Teens drinking are at risk of date rape, becoming an alcoholic, HIV and other STDs.

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Q:

The President of India is elected by the __________

A) members of the Lok Sabha	B) members of both Houses of the Parliament
C) members of the State Legislature	D) by an electoral college consisting of the elected members of both Houses of the Parliament and state Assemblies

Answer & Explanation Answer: D) by an electoral college consisting of the elected members of both Houses of the Parliament and state Assemblies

Explanation:

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Q:

A wire of copper having length I and area of cross-section A is taken and a current / is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be

A) P	B) < P
C) > P	D) 2P

Answer & Explanation Answer: C) > P

Explanation:

Aluminum has a resistivity varying from 2.65 to 2.82 × 10−8 Ω m.The resistivity of copper is generally given as: 1.72 x 10-8 Ω.m.So, since resistivity of aluminium is higher than that of copper, so Power dissipated will be greater than P. this is because rest of the factors (l, A and i) are constant.

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Q:

UNIVAC is

A) Universal Automatic Computer	B) Universal Array Computer
C) Unvalued Automatic Computer	D) Unique Automatic Computer

Answer & Explanation Answer: A) Universal Automatic Computer

Explanation:

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Q:

A cappella refers to

A) Literature	B) Music
C) Arts	D) War

Answer & Explanation Answer: B) Music

Explanation:

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Q:

Which of the following Indian cities is known as City of Roses?

A) Hyderabad	B) Kolkata
C) Mumbai	D) Chandigarh

Answer & Explanation Answer: D) Chandigarh

Explanation:

Among the Indian cities Chandigarh is known as City of Roses.

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